HomeMy WebLinkAbout9.0 Technical SpecificationPROTECT MANUAL FOR
MOUNTNN MEADOWS AT PRINCE CREEK
GARFTELD couNTy, coLoRADO
TECHNICAL SPECIFICATTONS
SEMEMBER, 1995
heparcd by
Sc;Imucser Godon MeYer, Inc-
718 West 6th Strcet, Suitt 200
Glenwood Springs, CO 81601
TABLE OF GONTENTS
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TABLE OF CONTENTS
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SECTION O21O1 - Removal of Structures and Obstructions . . 2
SECTION O22OO - Excavation and Embankment
sEcTroN 02221
SECTION 02222
SECTION 02255
- Trenching, Backfilling and Compaction
- Embedment and Base Course Aggregate 3
Dust Suppression
SECTION 02271 - Riprap 2
SECTION 02555 - Water Transmission and Distribution Lines 12
SECTION 15220 - Pumps and Piping Systems
SECTION 15800 - Heating, Ventilation and Air Conditioning . . . 3
SECTION 16000 - Electrical 6
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TECHNICAL SPECIFICATIONS
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sEcTtoN 02101
REMOVAL OF STRUCTURES AND OBSTRUCTIONS
1.OO GENERAL
1'01 scooe' This work shall consist of furnishing all labor, equipment, materials andmiscellaneous items for the removal and satisfactory jisposal or abandonment in ptace of altfences, signs, structures, old pavements, roads, sidewalks, retaining walls and any otherobstructions' lt shall also include salvaging oi o".ignated materials and backfilling theresulting trenches, holes, and pits.
This work shall include sawing concrete and asphalt in reasonabry ctose conformity with thedimensions of these specifications to create lines of weakness in order to facilitate controltedbreaking for removal.
1'o2 submittals' copies of written agreernents for disposal areas will be given to theEngineer before work begins.
2.OO MATERTALS. Not appticable.
3.OO METHODS AND PROCEDURES
3'01 General' The contractor shall remove and dispose of all signs, structures, fences, oldpavements' abandoned pipelines, and other obstructions. All salvageable materials noted shallbe removed, without unnecessary damage, in sections or pie-es which may be easilytransported and stored.
3'o2 Disoosal. Usable material may be disposed of outside the limits of view from theproject with written permission of the propeity owner on whose property the material isplaced' copies of all agreements with property'o*n.i. are to be furnished the Engineer.
where portions of structures are to be removed, the remaining portions shall be prepared tofit new construction. The work shall be done in accordance with Drawings, and in suchmanner that materials to be left in place shall be protected from damage; all damage toportions of structures to remain in place shall be repaiied by the contractir at his expense.Reinforcing steel projecting from the remaining stiucture shall be cleaned and aligned toprovide bond with new extension.
3'03 salvaqe' salvage all items shown on the Drawings. During demolition, owner or hisrepresentatives may designate additional materials to b; salvaged rather than disposed. Allsalvage materials shall be removed from the job site by the contractor and stored at a site tobe designated by the Owner.
3'04 Pioe to be left in olace. All small metal pipe and metal culverts shall have the endscrushed and crimped back where possible. The ends of all masonry and plastic pipe productsshall be completely back-filled with concrete or grout a rninimum of lg" ot. on" pipe diameter,whichever is greater. All headwalls and
"pprrtu-nrnces shall be removed. where shown onthe Drawings, pipe shall be backfilled their full length.
02101-1
3.05 Sawinq of Concrete. The sawing of concrete shall be done carefully, and all damages
to concrete remaining in place, due to Contractor's operations, shall be repaired by the
Contractor at his expense. An effective dust control method must be utilized throughout
concrete sawing operations. The minimum depth of saw cut ln concrete shall be 2 inches or
to the depth of the reinforced steel, whichever occurs first, unless otherwise designated.
3.06 Safetv. Operations that rnay damage or constitute a hazard to the traveling public will
not be permitted.
3.O7 Removal of Culverts and Other Drainaoe Structures. Culverts and other drainage
structures in areas under traffic use shall not be removed until satisfactory arrangements have
been made to accommodate traffic.
Where portions of existing structures lie wholly or in part within the limits of a new structure,
they shall be removed as necessary to accommodate the construction of the proposed
structure.
3.OB Removal of Pioe. Pipes indicated on the Drawings to be removed for salvage and reuse
shall be carefully removed, cleaned and every precaution taken to avoid damage to the pipe.
Removal of pipe shall include all appurtenances. Pipe to be salvaged shall be taken to the
Owner's designated storage yard; pipe to be re-laid shall be stored by the Contractor so that
no damage to pipe will occur. The Contractor shall replace, at his expense, all pipe lost or
damaged due to negligence, improper storage or improper construction techniques.
3.09 Removal of Pavement. Sidewalks. Curbs. etc. All concrete pavement, sidewalks,
curbs, gutters, etc., designated for removal. shall be broken into pieces, the size of which
shall not exceed approximately 4OO pounds or 3 square yards of surface area, and shall be
disposed of in a suitable manner.
Where old concrete construction abuts new concrete construction, edges of pavement
sidewalks, curbs, etc., to be left in place shall be sawn to a true line with a vertical face.
Asphalt and bituminous pavements to be cut to the full depth of pavement with a vertical face
in a straight line parallel to the limit of excavation. Cuts shall be made with flat bladed air
hammer or saw, or as approved in writing by Engineer, so as to provide a straight, true cut.
Concrete pavements, including curbs, gutters and sidewalks, to be saw cut to the full depth
of pavement with a vertical face in a straight line parallel to the limit of excavation. An
effective method of dust control shall be utilized throughout concrete sawing operations.
Feathering of new asphalt pavements onto old pavements will not be permitted under this
Contract.
3.10 Abandonment of Manholes. Catch Basins.lnlets. etc. Remove all portions of structure
to 12 inches below finish grade. Fill allvoids with concrete or Class 1 Structure Backfill (95%
density). Backfill to surface with concrete, Class 6 aggregate and/or bituminous asphalt or
topsoil to match final surface treatment.
End of Section
o21o1-2
sEcTtoN 02200
EXCAVATION AND EMBANKMENT
1.OO GENERAL
1.01 Scooe. Work to be performed under this section shall include all labor, equipment,
materials and miscellaneous items necessary to perform all clearing and grubbing, excavation,
backfilling, compacting, testing and related work not specified elsewhere, as shown on the
Drawings and required by the Specifications.
All work within the rights-of-way of the Federal Government, the Colorado Division of
Highways, County Governments or Municipal Governments shall be done in compliance with
requirements issued by those agencies. All such requirements shall take precedence over
these Specifications. lt shall be the Contractor's responsibitity to secure all required
excavation permits and pay all costs thereof.
1.O2 Related Work Soecified Elsewhere.
Section O22O1 - Excavation and Backfill For Structures
Section 02222 - Embedment and Base Course Aggregate
1.03 ReferenceStandards.
A. State Department of Highways, Division of Highways, State of Colorado,
"Standard Specifications for Road and Bridge Construction," Iatest edition.
1.O4 Field Conditions.
A. Existing Utilities. Underground utilities, except service lines, known to the
Engineer have been shown on the Drawings. Locations are approximate only
and may prove to be inaccurate. The Contractor is responsible for verification
of the existence, location and protection of all utilities within the construction
limits.
Before commencing with work, the Contractor shallnotify all public and private
companies who may have utilities within the project limits. The Contractor
shall coordinate with these entities all excavation performed. The Contractor
shall obtain all permits required by utility owners.
ln the event of damage to any existing utility, the Contractor shall be solely
responsible for the repair and payment for repair of all such damage.
The Contractor shall make arrangements for and pay all costs for relocation of
utilities requiring relocation as indicated on the Drawings. Should utility
obstructions, not shown on the Drawings, be encountered and require
relocation, the Contractor shall notify the Owner and the Engineer and shall
make arrangements necessary for such relocation. The owner shall pay the
costs for such relocation.
o2200-1
Existing lmprovements. The Contractor shall restore or protect from damage
all existing improvements encountered in performance of the work.
lmprovements damaged as a result of this work shall be restored to original
condition or better, as determined by the Engineer.
Adjacent property shall be protected by the Contractor from any damage. The
Contractor shall be held solely liable for any damage to adjacent property and
shall be responsible for all costs resutting from repair of such damage.
Soil Conditions. lt shall be the responsibility of the Contractor to examine soil
conditions and characteristics, including the presence of groundwater, that will
be encountered within the limits of construction.
1.OS Protection of Work.
Safety. All excavations shall be protected by barricades, lights, signs, etc. as
required by governing federal, state and local safety codes and regulations.
Sheeting, shoring and bracing. Except where banks are cut back on a stable
slope, provide and maintain sheeting, shoring and bracing systems necessary
to protect adjoining grades and structures from caving, sliding, erosion or other
damage, and suitable forms of protection against bodily injury, allin accordance
with applicable codes and governing authorities.
Remove sheeting and shoring systems as excavations are backfilled in a manner
to protect the construction or other structures, utilities or property. Do not
remove any sheeting after backfilling.
Sheeting and shoring systems shall be structurally designed and sufficiently
braced to provide necessary restraining of retained backfill. Prior to installation
of such systems, methods of installation and materials proposed shall be
discussed with and approved by Engineer. All systems shall be in strict
compliance with local, state and federalsafety regulations. Contractor is solely
liable for non-compliance.
Site Drainage. Excavation to be protected from surface water drainage at all
times.
1.06 Blastinq. No blasting shall be permitted without written consent of the Engineer.
Blasting shall be done only after Engineer receives permission from the appropriate
governmental authority(ies). Blasting shall be performed only by properly licensed,
experienced individuals and in a manner such that no damage to any property or persons will
occur due to either the blast or debris.
Contractor shall provide proof of insurance as required by these Specifications, the governing
authority or as required by Engineer prior to any blasting. All damage as the result of blasting
shall be repaired, at the Contractor's expense, to the satisfaction of the Engineer. All earth
or rock loosened by blasting shall be removed from excavations prior to proposed
construction.
A.
o2200-2
c.
B.
1.O7 Construction in Streets. When construction operations are located within streets,
make provisions at cross streets and walks for free passage of vehicles and pedestrians. Do
not block streets or walks without prior approval.
2.OO MATERIALS
All materials for construction fills and backfills shall meet specified requirements for gradation
and other factors defining suitability for the intended use. All classes of suitable materialshall
be free from perishable matter, debris, frozen material and stones and/or cemented pieces
larger than permitted by the specified gradation. Classification of materials shall be as
follows:
2.O1 Excavation. Excavation shall consist of the excavation of all materials of whatever
character required for the Work, obtained within the right-of-way, including surface boulders
and excavation for ditches and channels and not being removed under some other item.
2.O2 Materials for Embankment. Embankment material shall consist of approved material
acquired from excavations. hauled and placed in embankments in reasonably close conformity
with the line, grades, thicknesses and typical cross sections shown on the plans or as
designated.
When source of embankment materialis not designated on the plans, approval of the source
will be contingent on the material having a resistance value of at least that shown on the
plans, when tested by the Hveem Stabilometer, and a maximum dry density of not tess than
9O pounds per cubic foot.
2.O3 Toosoil. Topsoil shall consist of selectively excavated. Ioose, friable loam reasonably
free of admixtures of sub-soil, refuse, stumps, roots, rocks, brush, weeds or other materia!
which would be detrimental to the proper development of vegetative growth; topsoi! to be
free of any stone or rock greater than 3" in size.
3.OO METHODS AND PROCEDURES
3.01 Clearino and Grubbino.
A. Preservation of Existing Conditions.
The Engineer will establish right-of-way lines and construction lines and
designate all trees, shrubs, plants and other things to remain. The Contractor
shall preserve all things designated to remain. Paint required for cut or scarred
surfaces of trees or shrubs selected for retention shall be an approved
asphaltum base paint prepared especially for tree surgery.
B. Clearing and Grubbing.
Clear and/or grub all surface objects and all trees, stumps, roots and other
protruding obstructions, not designated to remain, including mowing, as
required, except undisturbed stumps and roots and non-perishable solid objects
which will be a minimum of two feet below subgrade or slope embankment.
02200-3
Outside cut or fill timits, but within construction limits, stumps may be left at
finish grade if allowed by Engineer.
Except in areas to be excavated, backfill stump holes and other holes from
which obstructions are removed, with embankment material and compacted in
accordance with Section 3.05.
Disposal.
lf perishable material is burned, burn under the constant care of competent
watchmen at such times and in such a manner that the surrounding vegetation,
the other adjacent property or anything designated to remain on the right-of-
way, will not be jeopardized. Burning shall be done in accordance with
applicable laws and ordinances.
When permitted, materiats and debris which cannot be burned and perishable
materiats may be removed from the right-of-way and disposed of at locations
off the project outside the limits of view from the project with the written
permission of the property owner on whose property the materials and debris
are placed. The Contractor shall make all necessary arrangements with
property owners for obtaining suitable disposal locations and the cost involved
shall be included in the unit price bid.
All merchantable timber in the clearing area which has not been removed from
the right-of-way prior to the beginning of construction, shall become the
property of the Contractor, unless otherwise specified.
Scalping.
Scalp areas where excavation or embankment is to be made. Scalping shall
include the removal of material such as brush, roots, sod, grass, residue or
agricultural crops, sawdust, and other vegetable matter from the surface of the
ground.
Hedges.
Hedges shall be pulled or grubbed in such a manner as to assure complete and
permanent removal. Scattered hedge or shrubs not classified as hedge shall be
removed as specified for hedge.
Topsoil.
Strip topsoil from all areas to be disturbed by construction. Topsoil to be
stockpiled separately from excavated materials.
3.O2 Construction Reouirements. The excavation and embankments required shall be
finished to smooth and uniform surfaces. Materials shall not be wasted without permission
of the Engineer. The Engineer reserves the right to change grade lines, cut slopes or fill lines
during the progress of the work.
c.
D.
E.
F.
o2200-4
3.O3 Excavation. Material outside of the limits of excavation will not be disturbed. Prior to
beginning excavation operations in any area, all necessary clearing and grubbing in that area
snilt nave been performed in accordance with these Specifications. The Contractor shall not
excavate beyond the dimensions and elevations established. Common excavation shal!
inctude all materials of whatever nature encountered in the work for construction of
excavations to the lines and grades called for on the Drawings. Structure excavation shall
inctude all earthwork required for the construction of structures to the lines and grades called
for on the Drawings. If any areas are inadvertently over-excavated, fill such over-excavation
with embankment material and compact in accordance with Section 3.05.
A. Tolerances. tn those areas upon which a subbase material is required, upon
which finished landscaping improvements, including sodding or lawn seeding,
or upon which a structure is to be constructed directly, deviation of not more
than 1 inch shatl be permitted when tested with a 16-foot straight edge.
Deviation from grade shall not exceed 1 inch at any point.
ln those areas upon which a base course material is required, deviation of not
more than 0.04 foot shall be permitted when tested with a 16-foot straight
edge. Deviation from grade shall not exceed o.o4 foot at any point.
ln those areas where no additional construction, other than topsoil addition will
occur, the finished surface shall be smooth and shall not deviate from grade by
more than O.5 foot at any Point.
B. Groundwater Control. Contractor to maintain facilities on site to remove all
groundwater from excavated area and keep water below the bottom of the
excavation to a point such that a firm base for equipment or concrete
installation exists. Facilities shall be maintained until all backfilling is in place
at least 24 inches above anticipated water levels before water removal. All
water removal shall be subject to approval by the Engineer.
Removal of water by bucketing, sump or trench diversions, intermittent
pumping, or sump or submersible pumps is considered incidentalto excavation
work. lnclusion of a bid item for dewatering indicates dewatering by
continuous pumping, well-point type systems is expected. lf such dewaterang
system is required, in the opinion of the Engineer, this work to be paid for as
indicated in the bid schedule, or if not included in the bid schedule to be
considered extra work paid for at a price negotiated between Contractor and
Owner prior to the start of dewatering.
C. Stockpile Excavated Material. Excavated materialto be stockpiled so as not to
endanger the work or public safety. Maintain existing vehicular and pedestrian
traffic with minimum disruption. Maintain emergency access and access to
existing fire hydrants and water valves. Maintain natural drainage courses and
street gutters.
Backfill materialto be segregated from stock piled topsoil and unusable backfill
materials.
D. Over-excavation. Whenever the site is over-excavated more than O.1' to
eliminate point bearing by rocks or stones beneath proposed structures or when
o2200-5
E.
grade tolerances are exceeded, the Contractor is to re-establish grade using
Class 1 Backfill(CDOH Section 703.08 - Class 1). Compaction shall be to 95%
maximum density. All work to re-establish grade shall be at the Contractor's
expense.
Unstable Materials. Materials which are not capable of supporting
superimposed loadings are defined as unstable materials. Should unstable
materials be encountered during excavation, immediately notify Engineer. ,f ,
in the opinion of the Engineer, unstable soil excavation is required and the
Contractor could not have reasonably been expected to discover the existence
of such materials during his site investigation, than a contract price for Unstable
Soil Excavation shall be negotiated between Owner & Contractor. No payment
shall be made for materials excavated prior to notification of the Engineer and
negotiation of payment for extra work.
lnclusion of a bid item for Unstable Soil Excavation indicates such excavation
is anticipated. The Contractor is to notify the Engineer prior to any unstable
soil excavation; no payment shall be made for excavation prior to authorization
of Engineer.
Bock Excavation. Rock excavation shall be defined as removal of boulders in
excess of three (3) cubic yards or solid or fractured rock, which requires
techniques, such as blasting or jacking for removat, other than those which are
being employed by the Contractor or are normally used in excavation, such as
use of backhoes, trenchers, draglines, etc. Should unanticipated rock
conditions be encountered, immediately notify the Engineer. lf in the opinion
of the Engineer, rock excavation is required and the Contractor had in fact
made a diligent and determined effort to remove the material using normal
excavation procedures as stated above and the Contractor could not have
reasonably been expected to determine the existence of such material during
his site investigation, then a contract price for Rock Excavation shall be
negotiated between the Contractor and the Owner. No payment shall be made
for excavation performed prior to determination of a negotiated price.
Rock shall be removed to a 4" depth below grade. ln addition, all rock loosened
during jacking, blasting, etc. shall be removed from the site. For payment
purposes, maximum depth to be paid for shall be 12" below required grade. All
over-excavation shal! be replaced as specified in Subsection 3.03, D.
lnclusion of a bid item for Rock Excavation indicates such excavation is
anticipated. Contractor to notify Engineer prior to any rock excavation; no
payment shall be made for excavation prior to notification.
Disposa! of Excess Excavation. Contractor to dispose of excess excavation off-
site. The Owner shall have the right to elect to have the excess excavation
disposed of at a designated site within the Work limits. Excavation may be
wasted on site only if approved by the Engineer and shall be done at the
direction of the Engineer. Disposal in any case shall be the sole responsibility
of the Contractor.
F.
G.
02200-6
3.O4 Embankment and Backfillinq. Do not begin embankments until construction below
grade has been approved, underground utility systems have been inspected, tested and
approved and trash and debris have been cleaned from the excavation.
place approved excavated materialin successive uniform maximum loose layers not exceeding
8 inches for the full width of the cross-section in all accessible areas. Place material in
successive uniform loose layers not exceeding 4 inches in areas not accessible or permitted
for the use of self propelled rollers or vibrators. Do not place fill on muddy or frozen
subgrade, or until subgrade is approved by the Engineer.
Plow, step, or bench sloped surfaces steeper than 4 to 1 on which fill or backfill is to be
placed in such a manner that fill materia! willadequately bond with existing surfaces. Scarify
all surfaces to receive backfill to a depth of 6' before filling.
Construct fills and embankments to the lines and grades indicated on the Drawings within
tolerances stated in Section 3.O3, A above.
Use suitable materials removed from the excavation prior to obtaining material from borrow
areas.
Where otherwise suitable material is too wet, aerate, dry or blend to provide the moisture
content specified for compaction.
3.056 Comoaction. During placing and/or compacting operations of earth or earth-and-rock
mixtures, the moisture content of materials in the layers being compacted shall be near
optimum and uniform throughout the layer. ln general, maintain the moisture content of the
material being placed and compacted within 2"/" of optimum condition as determined as ASTM
Standard D698.
A. Compaction Equipment. Perform allcompaction with approved equipment well
suited to location and material being compacted. Use heavy vibratory rollers
or sheepsfoot rollers where heavy equipment is authorized. Do not operate
heavy equipment closer to structures than a horizontal distance equal to height
of backfill above bottom of structure foundation. Compact remaining area with
hand tampers suitable for material being compacted. Place and compact
backfill around pipes with care to avoid damage.
Compact fillmaterialsto following densities at optimum moisture content based
on ASTM D698 or AASHTO T99:
1. Structure fill under or within 5' horizontally of all concrete structures:
95o/o.
2. Backfill beneath or within 5' horizontally or within the area defined by
a line extended at an angle of 1:1 of existing or proposed pavements,
roadways, sidewalks, curbs, utility lines or other improvements: 95oh
3. Backfill within lagoon berm: 95%
4. Backfill within public or designated rights-of-way: 9O% or as shown on
o2200-7
the Drawings.
S. Backfill within undeveloped, green or undesignated area: 83oh.
B. Jetting. Jetting and water inundation are generally not permitted methods of
compiction. The Engineer may allow jetting under certain field conditions.
Techniques including depth of tifts, amount of water to be used, penetration of
hose iet, etc., shall be at the direction of the Engineer. No ietting will be
allowed on materials with a 2oo-minus gradation of greater than 15oh.
Contractor shall pay cost of all water used, soil classification testing and
compaction testing and any retesting or recompaction required. No ietting shall
be done prior to written approval and direction of the Engineer.
c. Maintenance. contractor to maintain all embankment in satisfactory condition
during the extent of the contract and warranty period. All surface deterioration
determined to be the responsibility of the Contractor and all settlement shal! be
repaired at once by the Contractor upon notice by the Owner. All costs for
repair and atl liability as a result of surface deterioration or settlement shall be
the responsibility of the Contractor.
3.OO Proof Rollino. Proof rolling with a heavy rubber-tired roller will be required as
designated on the plans or when ordered. Proof rolling shall be done after specified
compaction has been obtained. Areas found to be weak and those areas which failed shal!
be ripped, scarified, wetted if necessary and recompacted to the requirements for density and
moisture at the Contractor's expense. Equipment to be used for proof rolling may also be fully
loaded, tandem axle dump truck or water truck or rubber-tired roller with equivalent loading
characteristics.
3.O7 Surface Bestoration. Att existing surface improvements and site conditions disturbed
or damaged during construction to be restored to a condition equal to pre-construction
condition. All restoration costs are considered incidental to excavation and backfill.
A. lmprovements. Replace, repair or reconstruct all improvements as required.
Work wilt not be accepted until restoration is accepted by Engineer and all
affected property owners.
B. Final Grading. The Contractor is to re-establish existing final grade or finish to
final grades as modified and shown on the Drawings. The Contractor is to
backfill to proper subgrade elevation with backfill material to allow placement
of surface improvements or materials.
C. Roadways. Atl roadways to be restored to original condition with material
types removed. Materials and methods to conform to Section 02222 -
Embedment and Base Course Aggregate; Section 02623 - Hot Bituminous
Pavemenq and Section 02614 - Portland Cement Concrete Paving. Additional
requirements are:
1. Minimum base course material on gravel roadways or minimum depth
gravel beneath hard surface roadways to be 8".
2. Minimum asphalt pavement surfacing to be 3".
o2200-8
3. Minimum concrete pavement surfacing to be 6".
D. Green Areas. Place excavated topsoil from the roadway or from pits directly
upon constructed cut and fill slopes without the use of stockpiles whenever
conditions and the progress of construction will permit.
Do not place topsoil until the areas to be covered have been properly prepared
and grading operations in the area have been completed.
Place and spread topsoil at locations and to the thickness shown on the plans.
Key to the underlying material by the use of harrows, rollers or other equipment
suitable for the Purpose.
Apply water to the topsoil at the locations and in the amounts designated.
Apply in a fine spray by nozzles or spray bars in such manner that it will not
wash or erode the toPsoil areas.
All loose exposed rock larger than six inches shall be removed from slopes that
are to receive topsoil.
4.OO OUALITY CONTROL - FIELD
4.01 lnsoection and Testino. lnspection and testing to be performed at the direction of the
Engineer. Contractor to cooperate fully with all persons engaged in testing. Contractor to
excavate as required to allow testing; Contractor to backfill al! test excavations in accordance
with these Specifications.
4.O2 Densitv Testino and Control.
A. Reference Standards. Density/moisture relationships to be developed for allsoil
types encountered according to ASTM D698 or AASHTO T99.
B. Field Testing. Testing for density during compaction operations to be done in
accordance with ASTM D2922 using nuclear density methods.
C. Frequency of Testing. Frequency of testing to be done at the direction of the
Engineer.
D. Retesting. ln the event of failure to meet compaction criteria, Contractor shall
re-excavate and re-backfill at direction of Engineer. All retesting to be paid for
by Contractor and to be performed by soils testing firm approved by the
Engineer.
4.03 Pavment for Testino. Owner responsible for all costs of initial testing of backfill.
Contractor to pay all costs of any retesting required.
End of Section
02200-9
sEciloN 02221
TRENCHING, BACKFILLING AND COMPACTION
1.OO GENERAL
1.01 Scooe. Work to be performed under this section shall include all labor, equipment,
materials and misceltaneous items necessary to perform all excavation, backfilling and
compaction of underground pipelines, conduits, cables and appurtenances shown on the
Drawings and specified herein.
All work within the rights-of-way of the Federal Government of the Colorado Division of
Highways, County Governments or Municipal Governments shall be done in compliance with
requirements issued by those agencies. All such requirements shall take precedence over
these Specifications. tt shall be the Contractor's responsibility to secure all required
excavation permits and pay all costs thereof. Contractor will be required to obtain necessary
road cut permits.
1.O2 Related Work Soecified Elsewhere.
Section 02222 - Embedment and Base Course Aggregate
Section 02555 - Water Transmission and Distribution Lines
Section O2560 - Sanitary Sewerlines
1.03 Field Conditions.
A. Existing Utilities. Underground utilities, except service lines, known to the
Engineer have been shown on the Drawings. Locations are approximate only
and may prove to be inaccurate. The Contractor is responsible for verification
of the existence, location and protection of all utilities within the construction
atea.
Before commencing with work, the Contractor shallnotify all public and private
companies who may have utilities within the project limits. The Contractor
shall coordinate with these entities all excavation performed. The Contractor
shall obtain all permits required by utility owners.
ln the event of damage to any existing utility, the Contractor shall be solely
responsible for the repair and payment for repair of all such damage.
The Contractor shall make arrangements for and pay all costs for relocation of
utilities requiring relocation as indicated on the Drawings. Should utility
obstructions, not shown on the Drawings, be encountered and require
relocation, the Contractor shall notify the Owner and the Engineer and shall
make arrangements necessary for such relocation. The Owner shall pay the
costs for such relocation.
02221-1
Existing lmprovements. The Contractor shall restore or protect from damage
all existing improvements encountered in performance of the work. lmprove-
ments damaged as a result of this work shall be restored to regional condition
or better, as determined by the Engineer.
Adjacent property shall be protected by the Contractor from any damage. The
Contractor shall be held solely liable for any damage to adjacent property and
shall be responsible for all costs resulting from repair of such damage.
Soil Conditions. lt shall be the responsibility of the Contractor to examine soil
conditions and characteristics, including the presence of groundwater that will
be encountered within the limits of construction.
1.O4 Protection of Work.
A. Safety. All excavation shall be protected by barricades, lights, signs, etc., as
required by governing federal, state and local safety codes and regulations.
B. Sheeting, Shoring and Bracing. Where trench walls are not excavated at a
stable slope, the Contractor shall provide and maintain support sufficient to
prevent caving, sliding or failure and property or bodily damage. Any damage
due to inadequate support shall be repaired at the sole expense of the
Contractor.
Under normal construction conditions, support shall be removed as work
progresses. Support shall remain installed if directed by the Engineer or if pipe
does not have sufficient strength to support backfill based on trench width as
defined by the sheeting. Sheeting shall not be removed a{ter the start of
backfilling.
Use of a movable trench shield or coffin box will not be allowed where pipe
strength is insufficient to support backfill as defined by the trench width after
the trench shield is removed.
The Contractor shall be held solely responsible for any violation of applicable
safety standards. Particular attention is called to minimum requirements of
OSHA and COSH (Colorado Occupational Safety and Health).
C. Site Drainage. Excavation to be protected from surface water at all times.
1.05 Blastinq. No blasting shall be permitted without written consent of the Engineer.
Blasting shall be done only after Engineer receives permission from the appropriate
governmental authority(ies). Blasting shall be perf ormed only by properly licensed,
experienced individuals and in a manner such that no damage to any property or persons will
occur due to either the blast or debris. Contractor shall provide proof of insurance as required
by these Specifications, the governing authority or as required by Engineer orior to any
blasting. All damage as the result of blasting shall be repaired, at the Contractor's expense,
to the satisfaction of the Engineer. All earth or rock loosened by blasting shall be removed
from excavations prior to proposed construction.
B.
C.
02221-2
1.06 Construction in Streets. when construction operations are located within streets
make provisions atFoss-streets and walks for free passage of vehicles and pedestrians. Do
not block streets or walks without prior approval'
1.O7 Submittals.
A. Bedding Material
1. Submit sieve analYsis
B. Select Fill
1. Submit sieve analYsis
2.OO MATERIALS
2.O1 Embedment Material. pipe tine embedment materialshall comply with the appropriate
classes as listed below and as illustrated in the Construction Drawings:
A. Class A - Use where indicated on the Drawings and where improper trenching
or unexpected trench conditions require its use as determined by the Engineer.
1. Characteristics - Concrete cradle foundation with densely compacted
Class 6 aggregate base backfill to 12" above top of pipe, or densely
compacted Cliss 6 aggregate granular foundation with concrete arch
cover to 6" above top of PiPe.
B. Class B - Use for all plastic, clay and asbestos - cement pipe under normal
construction conditions.
1. Characteristics - Densely compacted Ctass 6 aggregate or 314" screened
rock granular foundation of depth shown on Typical Details with densely
compacted Class 6 aggregate or 314" screened rock to 12" above top
of pipe.
C. Class C - Use for all types of pipe not specified under Class B where normal
construction conditions exist.
1 . Characteristics - Densely compacted Class 4 aggregate or 314" screened
rock granular foundation of depth shown on Typical Details with densely
compacted Class 4 aggregate or 314" screened rock to 12" above top
of pipe.
2.O2 Select Material. subject to approval by the Engineer, select material shall be allowed
in ptace of the aggregate backfill for Classes B & C embedment.
A. Characteristics - Soil materials free from rocks, clods, and organic material,
uniformlY graded as follows:
Pioeline Material
Plastic. clav and
Asbestos -'Cement
All others
Gradation Limits
3/4 inch max. with less thanI % oassinq No. 200 sieve
1 % ihch mdx. with less than
20% Passing No. 2O0 sieve
02221-3
2.O3 Concrete for Embedment. shall be 2000 psi concrete (28 day compressive strength)'
i.intor"r-*t ,nait conform to ASTM A185, Grade 40.
2.O4 Backfill Material.
A. characteristics - Native materials free from debris, organic matter and frozen
material. uniformly graded sufficient to allow proper compaction'
B.Gradation-Nobouldersgreaterthan6inchdiameterintop12inchesof
backfill'
Generally no boulders greater than 12 inch diameter in remainder of trench'
Limited number of bouiiers not exceeding 24 inch diameterto be allowed at
discretion of Engineer provided boulders can be uniformty dispersed and willnot
interfere in comPactive effort'
3.OO METHODS AND PROCEDUBES
3.01 Site Preoaration.
A. Clearing. Remove all vegetation, stumps, roots, organic matter' debris and
other miscellaneous struc-tures and materials from work site. Dispose of off-
site.
B. Topsoil Removal. Strip existing topsoil from all areas to be disturbed by
construction. Topsoil to be stockpiled separately from excavated materials'
c. Pavement Removal. See Section 02101 - Removal of Structures and
Obstructions'
3.O2 Trench Excavation
A. Limits of Excavation. Trenches to be excavated along lines and grades shown
on the Drawings, or as modified in the field by the Engineer' Trench widths for
pipe loading t; be measured 12 inches above top of pipe.
Minimum trench width to be the outside diameter of the pipe or conduit plus
16 inches.
Maximumtrenchwidthtobetheoutsidediameterofthepipeorconduitplus
24 inches foi all pipes or conduits with outside diameter of 24 inches or less,
and plus 30 inches for all pipes or conduits with outside diameters greater than
24 inches.
lf maximum trench width is exceeded, Contractor will provide at his expense,
higher strength pipe or special bedding including concrete at the direction of the
Engineer.
Trench excavation not to be completed more than 1oo feet in advance of pipe
installation. Backfill to be completed within l0o feet of pipe installation.
022214
B. Groundwater Control. Contractor to maintain facilities on-site to remove all
groundwater from trench and keep water at least 12 inches below the trench
bottom to a point such that a firm base for pipe or conduit installation exists.
Facilities shall be maintained until all concrete is cured and backfilling is in place
at least 24 inches above anticipated water levels before water removal is
discontinued; all water removal shall be subject to approval by the Engineer.
C. Stockpile Excavated Material. Excavated materialto be stockpiled so as not to
endanger the work or public safety. Maintain existing vehicular and pedestrian
traffic with minimum disruption. Maintain emergency access and access to
existing fire hydrants and water valves. Maintain natural drainage courses and
street gutters.
Backfill materialto be segregated from stockpiled topsoil and unusable backfill
materials.
D. Excavation for Appurtenances. Excavation to be done in accordance with these
Specifications and as shown on the Drawings. Adequate working clearances
to be maintained around appurtenances. Provisions for base and bottom
preparations shall apply to all appurtenances-
Precautions to be taken to maintain trench widths in the vicinity of adjacent
pipelines and conduits.
3.03 BottomPreoaration.
A. Undisturbed Foundation. Where soils are suitable and have adequate strength,
bottom to be graded and hand-shaped such that pipe barrel rests uniformly on
undisturbed soil. All rocks or stones which may result in a point bearing on the
pipe shalt be removed.
Undisturbed grades shall be within 0.1 feet t tolerance. Soils for final pipe
grade placed within these limits shall be fine granular (1OO% passing No. 4
sieve) or may be native materials, hand compacted to 95% maximum density.
B. Bell Holes. Material to be removed to allow installation of all fitting and joint
projections without affecting placement of pipe.
C. Overexcavation. Whenever trench is overexcavated to eliminate point bearing
by rocks or stones or when undisturbed grade tolerances of 0.1' are exceeded,
the contractor is to re-establish grade using class 6 aggregate bedding
material. Compaction shall be 95% maximum density. All work to re-establish
grade shall be at the Contractor's expense.
D. Unstable Materials. Materials which are not capable of supporting superim-
posed loadings are defined as unstable materials. Should unstable materials be
encountered during excavation, immediately notify Engineer. lf , in the opinion
of the Engineer, unstable soil excavation is required and the Contractor could
not have reasonably been expected to discover the existence of such materials
during his site investigation, then a contract price for Unstable Soil Excavation
02221-5
shall be negotiated between Owner and Contractor. No payment shall be made
for materials excavated prior to notification of the Engineer and negotiation of
payment for extra work.
lnclusion of a bid item for Unstable Soil Excavation indicates such excavation
is anticipated. The Contractor is to notify the Engineer prior to any unstable
soil excavation; no payment shall be made for excavation prior to authorization
of Engineer.
E. Rock Excavation. Rock excavation shall be defined as removal of boulders in
excess of three (3) cubic yards of solid or fractured rock, which makes hand
shaping of the bottom impossible and which requires techniques, such as
blasting or iacking for removal, other than those which are being employed by
the Contractor or are normally used in trench excavation, such as use of
backhoes, trenchers, draglines, etc. Should unanticipated rock conditions be
encountered, immediately notify the Engineer. lf in the opinion of the Engineer,
rock excavation is required and the Contractor has in fact made a diligent and
determined effort to remove the rnaterial using normal excavation procedures
as stated above, and the Contractor could not have reasonably been expected
to determine the existence of such material during his site investigation, then
a contract price for rock excavation shall be negotiated between the Contractor
and the Owner. No payment shall be made for excavation performed prior to
determination of a negotiated price.
Rock shall be removed to a 4" depth below grade, Additionally, all rock
loosened during jacking, blasting, etc., shall be removed from the trench. For
payment purposes, maximum trench width to be paid for shall be as defined in
Subsection 3.O2, A. Maximum depth to be paid for shall be 12" below required
grade. All overexcavation shall be replaced as specified in Subsection 3.03, C.
lnclusion of a bid item for rock excavation indicates such excavation is
anticipated. Contractor to notify Engineer prior to any rock excavating; no
payment shall be made for excavation prior to notification.
3.04 Backfillino.
A. Tamping Equipment. Except immediately next to the pipe, mechanical or air
operated tarnping equipment to be used. Hand equipment such as T-bar to be
used to pipe if necessary. Care to be taken when compacting under, along side
and immediately above pipe to prevent crushing, fracturing or shifting of the
pipe. The Contractor is to note densities required for materials being backfilled
and shall use appropriate approved equipment to obtain those densities.
Wheel rolling is not considered to be aq adequate compaction technique to
meetthese Specifications and will not be allowed. Where 85% compaction is
required, wheel rolling may be considered. Before acceptance, the Contractor
shall backfill a portion of the trench and pay for density testing to verify
adequacy of the proposed backfill techniques.
A hydro hammer may be allowed to obtain the specified density up to 4' in
02221-6
B.
c.
depth. The Contractor will be required
been tamped so that density tests can
density is being obtained full depth.
to re-excavate those areas that have
be taken to insure that the specified
Moisture Control- Generally maintain moisture of backfill material with + 2%of optimum moisture content as determined by ASTM D6gg. t trint.inEo"",tolerances as needed to obtain densities requiied.
Compaction. Maximum density (1OO%) based on ASTM D6gg or AASHTOT99.
1. Bedding Material, including material used for over-excavation of anykind: 95%
2. Select Material: gS%
3. Backfill beneath existing or proposed pavement, roadways, sidewatks,curbs, utility lines and other improvements or within E, horizontally ofsuch improvements: gS%
4- Backfil! within public or designated right-of-way: 90016 or as shown onthe Drawings.
5. Backfil! within undeveloped, green or undesignated area: gso|
Placing Backfill. The maximum toose lifts of backfill materiatto be as foilows:use smaller lifts where necessary to obtain required densities:
1. Bedding and select material: 6" (or see section 3.o3A).
2. BackfillMaterial: 24" where 9s% compaction required. 4g, where lessthan 95% compaction required.
Backfilling Appurtenances. Backfilling to be done generally at the same time asadjacent pipetines. Backfilling pro"Ldur. to coiform to this section. Usespecial techiques or materials as shown on drawings.
Disposal of Excess Excavation. contractor to dispose of excess excavation off-site' The owner shall have the right to elect to have the excess excavationdisposed of at a designated site within the work limits. Excavation may bewasted on-site onry if approved by the Engineer. Disposal in any case shail bethe sole responsibility of the Contractor.
Jetting. Jetting and water inundation are generally not permitted methods ofcompaction. The Engineer may allow jetting urier certain field conditions.Techniques including depth of rifts, amount of water to be used, penetration ofhose jet, etc., shall be at the direction of the Engineer. No jetting wilt beallowed on materiars with a 2oo minus gradati6n of greater tnJn lsoil.contractor shall pay cost of all water used, soil classiflcation testing ,nJ
"nretesting or recompaction required. No ietting shall be done prior tJ written
D.
E.
F.
G.
02221-7
approval and direction of the Engineer.
H. Maintenance of Backfill. Contractor to maintain all backfill in a satisfactory
condition during the extent of the contract and warranty period. All surface
deterioration determined to be the responsibility of the Contractor and a[
settlement shall be repaired at once by the Contractor upon notice by the
Owner. All costs for repair and all liability as a result of surface deterioration
or settlement shall be the responsibility of the Contractor.
l. Clay Barrier Water Stops. Because of the presence of ground water, a clay
barrier may be required to be installed full depth in trench in ptace of all bedding
material and backfill. This barrier shal! be full depth and two feet thick and
installed every 5OO lineal feet of trench. Al! such work, when not specifically
called for on the Drawings, shall be done at a price to be negotiated between
Owner and Contractor prior to commencement of Work.
3.05 Surface Bestoration. All existing surface improvements and site conditions disturbed
or damaged during construction to be restored to a condition equa! to pre-construction
condition. All restoration costs are considered incidental to excavation and backfill.
A. lmprovements. Replace, repair or reconstruct all improvements as required.
Work will not be accepted until restoration is accepted by Engineer and all
affected property owners. lmprovements include, by exampte, other utilities,
culverts, structures, curb and gutter, mail boxes, signs, etc.
B. Final Grading. The Contractor is to re-establish existing final grade or finish
final grades as modified and shown on the Drawings. The Contractor is to
backfill to proper subgrade elevation with backfill material to allow placement
of surface improvements or materials.
C. Roadways. All roadways to be restored to originat condition with material
types removed. Materials and methods to conform to Section OZZZ2,
Embedment and Base Course Aggregate; Section O2612, Hot Bitumjnous
Pavement; and Section 02614, Portland Cement Concrete paving. Additional
requirements are:
1. Minimum base course material on gravel roadways or minimum depth
gravel on hard surface roadways to be 8".
2. Minimum bituminous surfacing to be 2".
3. Minimum concrete paving to be 6".
D. Green Areas. Restore all green areas as specified on Drawings.
4.OO OUALITY CONTROL - FIELD
4.O1 Comoaction. lt should be fully understood that it will be the sole responsibility of the
Contractor to achieve the specified densities for all embedment and backfill material placed.
Contractor will be responsible for ensuring that correct methods are being used for the
02221-8
placement and compaction of said materials. Correct backfil! methods include, but are not
limited to:
1. Use of proper equipment for existing soil condition encountered.
2. Moisture content of existing soils; determination if water shoutd be added or if
soi! should be air dried to reduce moisture content.
3. Thickness of backfill lift.
Contractor may, at his own expense, have an approved geotechnical engineer monitor the
methods of backfill and compaction used to ensure that the desired densities are being
obtained.
lnspection and testing will be performed as directed by the Engineer. Testing will be
conducted as a quality control check to verify the Contractor's compliance with the slandards
indicated in the Specifications.
4-o2 lnsoection and Testino. lnspection and testing to be performed at the direction of theEngineer. Contractor to cooperate fully with all persons engaged in testing. Contractor to
excavate as required to altow testing. Contractor to backfitl all test excavations in accordancewith these Specifications.
4.03 Densitv Testino and Control.
A. Reference Standards. Density/moisture relationships to be developed for allsoil
types encountered according to ASTM D6gg or AASHTO Tgg.
B- Field Testing. Testing for density during compaction operations to be done in
accordance with ASTM D2922 using nuclear density methods.
C. Frequency of Testing. Minimum of one (1) test every 250, trench per lift or as
directed by Engineer. Contractor to excavate to depths required by Engineer
for testing and backfill test holes to density specified. Testing to be pjiO tor
by Owner.
D. Retesting. ln the event of failure to meet compaction criteria, Contractor shall
re-excavate and re-backfill at direction of Engineer. All retesting to be paid forby Contractor and to be performed by soils testing firm approved by the
Engineer.
4-O4 Pavment for Testino. Owner responsible for all costs of initial testing of backfill.
Contractor to pay all costs of any retesting required.
End of Section
02221-9
sEcTtoN 02222
EMBEDMENT AND BASE COURSE AGGREGATE
1.OO GENERAL
1.01 Scooe. This work shall consist of furnishing and placing one or more courses of
aggregate on the prepared surface in accordance with these Specifications in reasonably close
conformity with the lines, grades and typical cross sections shown on the drawings or
established by the Engineer in the field.
1.O2 Belated Work Soecified Elsewhere.
Section O22O1 - Excavation and Backfilt for Structures
Section 02221 - Trenching, Backfilling and Compaction
Section 02555 - Water Transmission and Distribution Lines
Section 02612 - Hot Bituminous Pavement
1.03 Submittals.
A. Aggregates. Certified statement from independent testing laboratory,
acceptable to Engineer, of material compliance.
2.OO MATERIALS
Aggregate used for pipeline bedding, base course and subbase course and specified by Class
in other sections of this Specification shall conform to the gradation schedule shown below.
CLASSIFICATION TABLE FOR AGGREGATE BASE COUBSET
Percentaoe bv Weioht Passing Souare Mesh Sieves
Sieve
Designation
4 inch
3 inch
2% inch
2 inch
1Yz inch
1 inch
3/4 inch
No. 4
No. 8
No. 200
LL not greater than 35
Class I Class 2 Class 3
100
95-1 00
100
:: '"=
=30-65
,-r u 3;; zo ,n",.
LL not greater than 30
Class 4 Class 5 Class 6 Class 7
1;
90-1 00
50-90
35-50
3-12
100
95-100
30-70
3-1 5
: ioo
100
30-65
25-65 20-85
3-12 5-15
*Reproduced from Colorado Department of Highways Standard Specifications for Road and
Bridge Construction.
o2222-1
3.OO METHODS AND PROCEDURES
3.01 Placino. The base course materialshall be placed on the previously prepared subgrade
at the locations and in the proper quantities to conform to the typical cross sections as shown
on the Drawings and as directed by the Engineer. Placing and spreading shall be done by
means of spreader machine, moving vehicle, motor grader or other approved equipment
methods. The material shall be placed without segregation. Any segregated areas shall be
removed and replaced with uniformly graded material at the Contractor's expense.
The base material may be placed in lifts of up to 6 inches, providing that after compaction,
uniform density is obtained throughout the entire depth of the lift. lf the required depth
exceeds 6 inches, it shall be placed in two or more lifts of approximately equal thicknesses.
lf uniform density cannot be obtained by 6 inch lifts, the maximum lift shall not exceed 4
inches in final thickness.
3.O2 Comoactino. Rolling will be continuous until the base material has been compacted
to not less than 95% of maximum density as determined by ASTM D698 or AASHTO T99.
Water shall be uniformly applied as necessary during compaction to obtain optimum moisture
content and to aid in consolidation. The surface of each layer shall be maintained during the
compaction operations in such a manner that a uniform texture is produced and the
aggregates are firmly keyed.
The finished base course surface shall be smooth and free of ruts and irregularities and true
to grade and crown as shown on the plans or as directed by the Engineer. The final surface
shall be finished with a surface smoothness tolerance of % inch, measured as vertical ordinate
from the face to a ten-foot straight edge. The base course shall be maintained in this
condition by watering, drying, rolling or blading as necessaty, ot as the Engineer may direct,
until the surface material is placed.
4.OO OUALITY CONTROL. FIELD
4.O1 lnsoection and Testino. lnspection and testing to be performed at the direction of the
Engineer. Contractor to cooperate fully with all persons engaged in testing. Contractor to
excavate as required to allow testing; Contractor to backfill all test excavations in accordance
to these Specifications.
4.O2 Densitv Testino and Control.
A. Reference Standards. Density/moisture relationships to be developed for allsoil
types encountered according to ASTM D698 or ASSHTO T99.
B. Field Testing. Testing for density during compaction operations to be done in
accordance with ASTM D2922 using nuclear density methods.
C. Frequency of Testing. Conduct a minimum of one test for each layer of
specified depth of fill or backfill as follows:
Foundations: For each 100 lineal feet or less of trench.
Slabs on Grade: For each 2,000 square feet or less of building area.
o2222-2
Pavement and walks: For each 2,000 square feet or less'
AllotherAreas:Foreach5,ooosquarefeetorless.
UtilityTrenches:Foreach2Solinealfeetorlessoftrench.
4.03 pavment for Testino. owner is responsible for all costs of initial testing of backfill'
Conttuctor to puy for all costs of any retesting required'
End of Section
o2222-3
All Division 2 Sections
1.03 Submittals'
A. Chemical Products'
MATERIALS
l": ,*lork under is Section sha* include furnishing a* materiars' rabor' equipment
and miscert"n"our,.,i#J-n"".rrurr,:lfiil"
orr,.onir"i'ir"r the entire proiect site'
1.o2
sECTloN 02255
DUST SUPPRESSION
Descriptive literature defining chemical constituents'
Percentaoe bv Weioht
2.00
2.O1
3.OO METHODS AND PROCEDURES
3.01 Dust Control. Dust control to be considered.anintegral part
9,1 1" Y:'n. Control shall
be provided from ?n"-r-,ru.. r, "onr,rir"",i".
r"iri,n. wo-ri'is'comprete' Fugitive dust as a
result of constru*i"" tn"fibe controlled at all times'
3.o2 waterino. For road construction, the contractor shall have a_wale]-truck on site at a*
;;;: t", 01,-1,ii";Lll;Iil'I"%'l:l"i.i'"ff":"'1il::#ffi
;;il"Ensineer as required untrr
:1TJ:::::,",,"n, dust coltrlr may be alcolollsned by water tru,ck or spray svslem
rrom an on-site ;;;;;';tem if ;J;;'Li: Cont'""to'-tn"ri be prepared to provide dust
control until the i''n"Jt'iiu"e is completed'
The contractor sha* provid" 1*u-l:, meter for metering any water taken f rom the municipal
water sYstem *ffiil;;;oL ti'" hvdrants or private taps'
3.o3ChemicalControl.WhergrequiredbytheEngineer,dustcontrolshallbeprovidedby
the use ot n1ug'ffi;:nro'io" "n#o'i tptuv to the road surface'
Approximatel1 28%-36%
2s%
Less than 1 7o
-0-
02255-1
Maqnesium Chloride'
Constituents
Magnesium Chloride
SulPhateilil.tirrn, sodium' calcium
Nitrate
After the surface has been prepared, the road shall be pre-wet to a very damp condition. The
product shall be applied using a watering truck with spray applicator, providing an even
distribution across the surface. Application rate shall be 113 - 1/2 gallon per square yard. The
surface shatt be re-sprayed until complete coverage is attained.
End of Section
o2255-2
1.00
1.01
sEGTloN
ozz-tt
BIPRAP
he \ocation
GENERAL
T :$m';:$*r::-andp\acinsotripraeaccordinstotr
B s.,ir'fi' r,*li:5*r$in**Wit*l,:**::
ot Hign
"moOtti"d'
z.oo PRoDucls
z o 1 *:'"0
*o'ui*llu\ffi,:[i,].[,#-']T:fi"H#:'{:Hf:l*i}3i}
:$t:'$
. .: *$*:
k*' -*,:".:x,iqj,+iri.*svr"i*$i.?i[rffi
ftffi*::B:;ll;t"r*\s ry
gieve Measure 'ti
..^h rnoooo(
o i';""
and grau""
O 211t-t
A torerance of prus or minus three inches (3") from the srope rines and grades shown on the
or"*ing" shall be allowed in the finished surface of the riprap'
Riprap wi[ be praced to its fuil course thickness in one operation. The pracing shau progress
upwards on ths slopes. The riprap *iri u" carefully placed on the prepared slope in such a
manner that adiacent stones are in close contact and' in genera' have their greatest
dimensions across the perpendicurar to the stope. Through stones will be well distributed
throughout the mass.
Asusedherein,athroughStoneisdefinedasaStonewhosedimensionasnormaltothe
surfacebeingriprappedisnotlessthanthefulldepthoftheriprap.Thefinishedriprapwill
be free from obiectionable pockets of smail stone crusters of larger stones. Placing riprap in
layers will not be Permitted'
End of Section
02271-2
sEcrloN 0255s
WATER TRANSMISSTON AND DISTRIBUTION LINES
1.OO GENERAL
1 .O 1 Scope. Work under this Section shall include furnishing all materials, labor, equipment
and miscellaneous items necessary to install, disinfect, and test all raw water and potable
water transmission and distribution pipelines and appurtenances as specified herein and shown
on the Drawings.
1.O2 Related Work Soecified Elsewhere.
Section 02221 - Trenching, Backfilling and Compaction
Section 02222 - Embedment and Base Course Aggregate
Section 02612 - Hot Bituminous Pavement
1.03 Submittals. product data including catalog sheets and descriptive literature shall be
submitted for all materials and equipment specified. Submittal shall state manufacturer's
compliance with all published standards referenced herein'
1.04 protection of Work. All pipe fittings, valves and equipment shall be carefully handled,
stored and protected in such a manner as to prevent damage to materials and protective
coatings and linings. At no time shall such materials be dropped or dumped into trench.
precaution shall be taken to prevent foreign matter from entering the pipe, fittings and valves
prior to and during installation. Place no debris, tools, clothing or other materials in the pipe
during installation.
At such time as pipe installation is suspended, either temporarily or overnight, the open end
of the pipe shall be sealed with a watertight plug to prevent entrance of trench water, debris
or foreign matter.
Under no circumstances shall trench water be allowed to enter the pipeline. When water is
present in the trench, the seal shall remain in place until such time as the trench is pumped
dry. Whenever trench water becomes evident, adequate measures shall be taken to prevent
pipe floatation.
lf, in the opinion of the Engineer, the Contractor is incapable of keeping the pipe free of
foreign rnatter during installation, the Engineer shall require the Contractor to cover the pipe
ends with close woven bags until the start of the ioining operation.
2.OO MATERIALS
This item covers the types of materials that will be required for the construction and
installation of water lines. All materials used shall be new, of the best quality available, and
conf orm with applicable standards as indicated herein. TNOTE: Localjurisdiction specif ications
(i.e., municipality, district, etc.), will govern when two or more alternatives are given in these
02555-1
specifications, or where there is a
jurisdiction specifications.
2.O1 Ductile lron Pioe and Fittinos.
discrepancy between these specifications and local
A. Ductile lron Pipe.
Reference Standard - ANSI 21 .51/AWWA C1 51-86
Thickness Class - 52
Pipe joints shall be push on joints, except where
specifically shown or detailed otherwise.
C.
Fittings
1. Type - All fittings shall be mechanical joint, except where specifically
shown or detailed otherwise.
2. Reference Standard - ANSI/AWWA C153 for flanged, mechanical joint
"compact" and push-on joints.
3. Material - Ductile iron
4. Pressure Rating - 350 psi
Joints
1. Mechanical, Reference Standard - ANSI A. 21.1 1/AWWA C111-72
2. Push-on, Reference Standard - ANSI A 21 .1 1/AWWA C111-72
3. Flanged, Reference Standard - ANSI B 16.1, Class 125
Gaskets
1. Type - Rubber-ring gasket shall be suitable for the specified pipe sizes
and pressure
2. Reference Standard - AWWA C-11 1
3. Lubricant - A non-toxic vegetable soap lubricant shall be supplied with
the pipe
Protective Coating
1. Underground Service - Manufacturer's standard bituminous coating -
minimum 1 rnil thickness.
2. Polyethylene Film Envelope - Polyethylene encasement shall conform to
AWWA C-105-88 or ANSI A.21 .5. Film shall be Class C with a nominal
thickness of 8 mils. Tape for securing the film shall have a minimum
thickness of 8 mils and a rninimum width of 1 inch. The polyethylene
film shall be free of streaks, pinholes, tears or blisters.
Protective Lining
1. Type - Cement mortar
2. Reference Standard - ANSI A 21.4lAWWA C104.85
3. Thickness - Standard
1.
2.
3.
B.
D.
E.
F.
o2555-2
2.02 Polvvinvl Chloride (PVC) Pioe and Fittinqs'
A. PVC PiPe
1. Materials - ASTM D1784,Type 1, Grade 1, PVc 112o,2000 psi design
stress.
2. Reference Standard - ASTM D-2241'
3. Class - 2OO (SDR 21), all sizes'
4. Markings - Manufacturer's name,nominal size, class pressure rating'
PVC 1 120, NSF logo, identification code'
S. Specialties - Electrii tracing wire, 14 gauge solid copper insulated wire'
B. Fittings
1. Type - PVC, Schedule 40, Solvent weld'
C. Joints
Push-on rubber gasket, for gate valves'
Gasket Reference Standard - AWWA C-l 11'
2.O3 Fire Hvdrants.
A.Dry Barrel TyPe
1.
2.
1.
2.
3.
4.
5.
6.
Reference Standard - AWWA C502-80'
Outlet Size - one 4 ll2 inch, two 2 112 inch'
Hydrant Size - 5 1i4 inch.
lnletSize-6inch.
operation - 1%-inch pentagonal national standard operating nut, open
counter clockwise.
Special Features - outlet hydrant shall open when turned to the left
(counter clockwise)'
Depth of Bury - As shown on Drawings'
Additional Requirements - Furnish hydrant complete with pipe and tee,
6 inch (6") restrained mechanical joint gate valve and thrust blocks'
Hydrant shall be restrain-to the hydrant tee by 3/4 inch threaded rods
protected from corrosion by the use of an approved bituminous coating'
Traffic Model with break-away bolts and coupling'
Manufacturers Reference - Kennedy K81 -A Guardian, Mueller Centurion'
or approved equal.
7.
8.
o
10.
2.O4 Valves.
Gate Valves
1. Double Disk
a. Size as shown on Drawings'
b. Reference Standard - AWWA C5O0-86'
A.
0255s-3
c. Style - lron body, bronze-mounted, non-rising Stem, double disk,
parallel seat, NRS valves with O-ring seals-
d. Rotation - Open, left or counterclockwise.
e. Pressure rating - 2OO Psi.
f. Operator - 2" square nut.
g. Manufacturer's Reference - Dresser, Kennedy
h. Ends - MJ unless specified on Drawings.
2. Resilient
a. Size as shown on Drawings.
b. Reference Standard - AWWA C50O-86.
c. styte - lron body, bronze stem resilient seat gate valves, lubrica-
tion free, Unobstructed through port to minimize head loss, entire
body encapsulated inside and out with epoxy coating.
d. Pressure Rating - 2OO Psi.
e. Wrench Nut - 2 inch square'
f. Manufacturer's Reference - Dresser M&H RSGV.
B. Combination Air Release Valve.
1. Size - 1" Orifice, or as recommended by manufacturer for correct
application.
2. lnlet - 1" PiPe Thread
3. Materials
Body - Cast lron
Float - Stainless Steel
Seat - Buna-N
Lever Frame - Delsrin
4. Pressure Rating - 200 Psi
5. Manufacturer's Reference - APCO
G. Performance - Permits efficient filling or draining of long pipelines, for
protection against vacuum, and will continuously vent pockets of air as
they accumulate in PiPeline.
2.O5 Valve Boxes.
A. Screw TyPe - Three Piece
1. Material - Cast lron
2. Size - 5 114 inch diameter
3. Type - Three piece adiustable screw type
4. Cover - Deep socket type with the work "water" cast in the top
5. Base - #160 type with 20.5" bottom opening
2.OO Mechanical Couplinos. Only M.J. solid sleeves allowed.
2.07 Water Service & Tao Comoonents'
A. Corporation Stops
02555-4
1. Material - Brass or bronze2. Size - As shown on Drawings
3. Reference Standard - AWWA C80O-5S4. Thread inlet - Tapered (CC) Type5. Thread outlet - Copper Service Thread for flared connection.6. Manufacturer's Reference - Mueller H 15000, Ford FG00
B. Copper Service Pipe
1. Reference Standard - AWWA 75-CR Type K2. Size - As shown on Drawings.
C. Curb Box
1. Material - Cast iron box, complete w/lid and red brass screw.2. Type - McDonald 5605 with stationary rod.3. Size - 1" - 1 Yr", depending on local jurisdiction preference.
D. Curb Stop
1. Materials - Cast bronze body, resilient O-ring seal, standard tee-head
operator. Teflon ball value.2. Size - As shown on Drawings.3. lnlet - Copper service thread for flared connection.4. Outlet - Copper service thread for flared connection.5. Manufacturer's Reference - Mueller Oriseal lll, Ford E22-333, McDonald
61 00.
E. Service Clamps
1. For use with Ductile lron pipe:
A. Materials - Bronze service clamp, O-ring gasket, double strap,
(CC) threads.B. Manufacturer's Reference - Mueller H16 series, srnith Blair 323,
or equal.
2. For use with pVC pipe:
A. Materials - Bronze service clamp, O-ring gasket, two section of
three section clamp, (CC)threads.
B. Manufacturer's Reference - Mueller H-134 series, Smith Brair
397, or equal.
2.Og Concrete for Thrust Blocks and Encasinq of Pioe. Concrete for thrust blocks and for
encasing the water pipe line shall have a28-day compressive strength of not less than 3OOO
psi.
02555-5
2.Og Tracer Wire. No. 1 5 or larger, insulated, stranded copper. All splices to be watertight,
underground type, (Tracer wire is required for ductile iron pipe).
3.OO METHODS AND PROCEDURES
3.01 Cleanino and lnsoection. Clean all pipe, fittings, valves and related materialthoroughly
of all foreign materialand inspect for cracks, flaws or other defects prior to installation. Mark
all defective, damaged or unsound materials with bright marking crayon or paint and remove
from jobsite.
The Contractor shall take all necessary precautions to prevent any construction debris from
entering the water lines during construction of water lines and appurtenances. lf this debris
should enter the distribution system, the Contractor shall furnish all labor and material
necessary to clean the system. Under no circumstances will the Contractor flush the debris
into an existing distribution system.
3.O2 Verification. Verify dimensions and class of all existing and proposed pipe, valves,
fittings and equipment prior to installation to ensure the piping system will fit together
properly.
3.03 Pipe Embedment.
A. Placing Embedment Material - Refer to Section 02221 for placement methods.B. Embedment Classes - Refer to Section 02222 for embedment materials as listed
below.
Use class 6 aggregate 4" below pipe and 12" above pipe for all pipe
materials. Contractor shall compact trench bottom before placing
bedding and shall compact bedding.
3.04 Pioelnstallation.
A. Methodology - Pipe shall be laid in straight section with bell ends facing the
direction of laying unless otherwise directed by the Engineer. Where pipe is laid
on a grade of ten percent llOo/ol or greater, the installation shall proceed uphill
with the bell ends facing upgrade. The pipeline shall be installed so that a
continuous positive or negative grade is maintained between high and low
points to avoid air pockets. Jointing of the pipe shall be made in accordance
with the directions of the manufacturer of the pipe and the manufacturer of the
coupling.
The pipe shall be brought to correct line and grade, and secured in place with
the specified bedding material as directed in Section 02221.
B. Pipeline Depth - as indicated on Drawings, or as per localjurisdiction but always
below frost level. Depth shall be based on depth below finished grade of aproject and not existing grade.
C. Concrete Encasement - lnstall concrete encasement where indicated on the
drawings or as required by other sections of this Specification. Concrete shall
02555-6
D.
have a three thousand (3000)psi compressive strength. Reinforcing shall
consist of four (4) evenly spaced longitudinal No. 4 rebars.
lnstallation of Ductile lron Pipelines.
1. Pipe Handling. Pipe should be lowered into the trench with ropes, slings
or machinery. Under no circumstances should the pipe be pushed off
the bank and allowed to fall into the trench.
2- Pipe Laying. Pipe shall be laid in straight sections, in an uphill direction,
with bellends facing in the direction of laying, unless directed otherwise
by the Engineer.
3. Jointing of Push-on Joints. ln joining the pipe, the exterior four inches
of the pipe at the spigot end and the inside of the adjoining bell shall be
thoroughly cleaned to remove oil, grit, tar (other than standard coating)
and other foreign matter. The gasket shall be placed in the bell with the
large round side of the gasket pointing inside the pipe so it will springinto its proper position inside the pipe bell. A thick film of the pipe
manufacturer's joint lubricant shall be applied to the gasket over its
entire surface. The spigot end of the pipe shall then be wiped clean and
inserted into the bell to contact the gasket. The pipe shall be forced all
the way into the bell by crowbar or by jack and choker slings.
4. Pipe Cutting. The cutting of pipe for fittings or closure pieces shall be
done in a neat and workmanlike manner without damage to the pipe orlining and so as to leave a smooth end at right angles to the axis of thepipe. The flame cutting of pipe by means of an oxyacetylene torch willnot be allowed.
5. Polyethylene Film Envelope. Encase main and fittings using procedures
recommended by manufacturer. Specialcare shall be used at all overlapjoints.
lnstallation of Polyvinyl Chloride (pVC) pipe.
1. Pipe Handling. Pipe should be carefully lowered into the trench to avoidpipe falling into trench.
2. Pipe Laying. Pipe shall be laid in straight sections with bell ends facing
the direction of laying. when pipe laying is not in progress, the open
end of the pipe shall be closed by a water-tight plug.
3. Jointing the Pipe. The outside of the spigot and the inside of the bell
shall be thoroughly wiped clean. Set the rubber ring in the bell with the
marked edge facing toward the end of the bell. Lubricate the spigot end
using a thin film of the manufacturer-supplied lubricant. pustr the pipe
spigot into the bell. Position the completed joint so that the mark on thepipe end is in line with the end of the bell.
E.
02555-7
4. Pipe Cutting. The cutting of pipe for fitting or closure pieces shall be
done in a neat and workmanlike manner without damage to the pipe and
so as to leave a smooth end at right angles to the axis of the pipe.
Bevel the end of the pipe with a bevelling tool after the pipe is cut.
Place a clearly visible position mark at the correct distance from the end
of the field-cut pipe.
3.05 lnstallation of Pioeline Aoourtenances.
A. General. lnstallallvalves, meters, manholes, and other equipment appurtenantto pipeline at the locations indicated on the drawings or as otherwise
designated by the Engineer to accommodate field conditions. Record "as-built"
measurements prior to backfill referencing all appurtenant equipment to the
nearest permanent surface improvement.
B. lnstallation of Valves. lnstall valves in the pipeline in the same manner
specified for laying and jointing the pipe and in accordance with details included
in Drawings.
C. Valve Boxes. Except where specified otherwise, install valve boxes on all
buried valves. lnstall boxes such that no stress is transmitted to the valve. Set
boxes plumb and directly over the valve with the top of the box placed flush
with the finished grade. Backfill and thoroughly compact around each box.
Provide extended stems on valves where required such that the operating nut
is not lower than seven feet (7,) below finished grade.
D. Fire Hydrants. lnstall hydrants in accordance with the standard details on thedrawings. All tie rods and appurtenances to be completely covered with a
bitumastic coating prior to backfill. Hydrant to be set plumb and true to grade.
Contractor to bag or cover the fire hydrant that is not in operation.
E. Reaction Anchor and Blocking. Concrete thrust blocks shall be provided, as
shown in the details included with the Drawings for all tees, elbows, plugs,
reducers, valves, fire hydrants and crosses if one or more sides of the cross is
plugged. The bearing area of the block shall be at least equal to that stated on
the drawings. The bearing surface shall be against undisturbed earth. The
block shall be placed normal to the thrust as shown on the drawings. Concrete
for thrust blocks shall have three thousand (3000) psi compressive strength.
Contractor will be required to use either plywood forms or plastic to protect the
nuts and bolts on the fittings when the concrete reaction block is placed.
Contractor to also use star clamps or wood blocking as a method of temporary
restraint to secure fittings while concrete reaction blocks set up. (Note:
Temporary restraint to be used for those cases where a tie-in is being made and
the water needs to be turned back on as soon as possible).
3.06 Connection to Existing Water Facilities. All main line connections between existing andproposed piping shall be made during non-business hours or at a time which is acceptabte to
the Owner. All shut-offs shall be planned 24 hours in advance and all persons affected by the
0255s-8
shut-off shall be given a 24 hour notice in the local newspaper and/or local radio at the
Contractor's expense. ln addition, the Contractor shall personally warn those affected t hour
before the water is shut off.
The tie-ins between existing and proposed mains shatl be made so that both the proposed
main and existing main are in service at the same time. Only after both mains are in service
can the individual proposed service lines tie into the existing service line on the building side
of the curb valve. The affected property shall be given a minimum of t hour notice before the
water is shut off. The new line must have passed the pressure testing and bacteriologicaltest
prior to connecting the services to the proposed water line.
Remove existing curb boxes and locate new curb boxes on property line whenever possible.
Contractor is to provide all necessary fittings needed to reconnect service line on property side
of curb box.
Take all precautions to prevent contamination when making connections to existing potable
water lines. No trench water, mud or other contaminating substances shall be permitted to
enter the pipeline.
Swab the interior of all new pipe, fittings and valves installed in the existing pipeline with a5 percent (50,000 ppm) chlorine solution prior to installation. After the connection is
completed, flush the main to remove all contaminated water.
3.O7 Protection of Water Suoolies. Water lines shall be located a minimum of ten feet (10')
horizontally from existing or proposed sewer mains. Wherever the sewer line crosses above
or within eighteen inches (18") beneath the water mains, the sewer line shall be made
impervious by the method listed below:
1. For twenty feet centered over the waterline.
ln all cases, select granular backfill shall be used to prevent any settling of the
higher pipe.
3.08 Service Connections. Customer service connections shall be installed in accordance
with the details set forth on the Drawings. Terminate the service with a curb stop and box
and mark with a stake except where shown otherwise on the Drawings.
3.09 Tracer Wire. Tape electrical tracing wire to the top of the pipe at 2O-foot intervals to
prevent dislocation of the wire during backfilling. Extend wire to ground surface at all valves,
fire hydrants, and other locations shown on drawings. The tracing wire shall be brought up
on the outside of the valve box. When the wire is within 4" of the top of the lid, the wire
shall be brought back inside the box and securely fastened. Provide sufficient slack in the
wire outside of the box to compensate for any future adjustment to the valve box. Required
on all water mains.
4.OO FIELD OUALITY CONTROL
4.O1 Hvdrostatic Tests. Make pressure and leakage tests on all newly laid pipe. Furnish all
necessary equipment and material, make all taps in the pipe as required, and conduct the
02555-9
tests. The tests shall be conducted between valved sections of the pipeline, or as approvedby the Engineer. The Engineer will monitor the tests.
Furnish the following equipment and materlal for the tests:
Amount
2
2
1
1
Descriotion
Approved graduated containers
Pressure gauges
Hydraulic force pump approved by the Engineer
Additional l l2inch pressure tap for Engineer,s test
gauge
Suitable hose and suction pipe as required
Conduct the tests after the trench has been partially backfilled with the joints left exposed forinspection, or when completely backfilled, as permitted by the Engine"i. wh"r" any sectionof pipe is provided with concrete reaction blocking, do not make the pressure test until atleast 5 days have elapsed after the concrete thrust blocking is installed. tt frigfr-early cementis used for the concrete thrust blocking, the time may be cut to 2 days.
Conduct pressure test in the following manner, unless otherwise approved by the Engineer:after the trench has been backfilled or partially backfilled as hereinbeiore specified, fill the pipewith water, expelling all air during the filling. The test pressure shall be 1 % times normalworking pressure at the point of lowest elevation of the test gauge.
A. Duration
1- The duration of each pressure test shall be 2 hours, unless otherwise
directed by the Engineer.
B. Procedure
1 - Slowly fill the pipe with water and allow to stand tor 24 hours. Expel
all air from the pipe. Allow and maintain the specified test pressure by
continuous pumping if necessary tor the entire test period. The tesipressure shall be calculated for the point of lowest elevation, or as
specified by the Engineer. The pump suction shall be in a barrel orsimilar device, or metered so that the amount of water required to
maintain the test pressure may be measured accurately.
2. Before the line is pressurized, the Engineer shall verify that all necessary
main line valves are open or closed with regard to the section of line
being tested. ln addition, the Engineer shall verify that all hydrant
valves are open.
C. Leakage
1- Leakage shall be defined as the quantity of water necessary to hold thespecified test pressure for the duration of the test perio'd. N;-pip;installation will be accepted af the leakage is greater than the number ofgallons per hour as determined by the f-ollowing formula:
02555-10
,- NNP"-rz6o
ln the above formula:
L - Allowable leakage, in gallons per hour
Jrl = Number of joints in the length of pipe tested
D - Nominal diameter of pipe, in inches
P - Average test pressure during the leakage test, in pounds per
square inch gauge.
D. The pressure testing of water service lines shall follow the same procedure as
outlined in the section. ln all cases, however, the corporation stop, service line
and curb stop shall be visually inspected under full test pressure and any leaks
fixed.
E. Correction of Excessive Leakage
1. Should any test of pipe laid disclose leakage greater than that allowed,
locate and repair the defective joints or pipe until the leakage of a
subsequent test is within the specified allowance.
5.OO DISINFECTION OF POTABLE WATERLINES
9.01 General. Flush and disinfect potable waterlines in accordance with the procedure setforth in AWWA C6O1-68 Disinfecting Water Mains.
Provide all temporary blow-offs, pumps, chlorination equipment, chlorine and all other
necessary apparatus required.
5.02 Pioe Cleaninq. lf the pipe contains dirt or heavy encrusted matter that, in the opinion
of the Engineer, will not be removed during the flushing operation, the Contractor shall clean
and swab the interior of the pipe with a five percent (5O,OOO ppm) chlorine solution.
A. Preliminary Flushing. Flush pipeline to disinfection, except when the tablet
method is used, to remove all remaining foreign material. The flushing
operation shall develop a minimum velocity of 2.5 ft./sec.
5.03 Cntorine eooticatm. ln general, chlorine shall be applied using the continuous feedmethod. However, on large diameter lines where this would not be praCtical, the slug method
may be used. The tablet method may be used on short extensions (up to 25OO feeti of smalldiameter mains (12 inches and smaller).
Continuous Feed Method. lntroduce water into the line at a constant rate while
adding chlorine at a minimum concentration of so mg/|. Maintain the
chlorinated water in the pipeline for a minimum of 24 hoursafter which period
the treated water shall contain no less than 25 mg/l of chlorine throughout the
entire length. Repeat the above procedure if the residual at the end of-24 hours
fails to meet the minimum concentration.
Slug Method. lntroduce water with a minimum chlorine concentration of 300mg/l at a constant measured rate into the pipeline. Apply column or slug of
chlorinated water that will, as it passes along the line, expose all intelior
surfaces for a period of three hours. Check the application at the upstream end
of the line.
A.
B.
02555-11
Tablet Method. This method shall not be used if trench water or foreign
material has entered the line or if the water is below soc (41 oF). Becausepreliminary flushing cannot be used, this method shall only be used when
scrupulous cleanliness has been exercised.
Place tablets in each section of pipe in sufficient number to produce a dose of
50 mg/|. Befer to Table 3 of AWWA C6O1 for the required minimum number
of tablets. All tablets within the main must be attached at the top of the pipe.
lntroduce water into the pipeline at a rate no greater than 1 ft./sec. and retain
the water in the pipeline for a period of 24 hours.
5.O4 Final Flushino. After the required retention period, flush all heavily chlorinated water
from the main until the chlorine concentration is no higher than that prevailing in the system,
or less than 1 mg/|.
5.05 Bacterioloqic Tests. After completion of the final flushing and prior to placing the
pipeline in service, collect samples from the end of the line and test for bacteriologic quality
to show the absence of coliform organisms. The number and frequency of samples shail
conform to the requirements of the Public Health Authority having jurisdiction, but in no case
shall the number be less than one for chlorinated supplies.
Collect samples in sterile bottles from a standard corporation stop furnished and installed by
the Contractor in the main. Do not collect samples using a hose or fire hydrant.
5.OO Reoetition of Procedure. lf the original disinfection fails to produce satisfactory
samples, repeat the disinfection procedure until satisfactory results are obtained.
End of Section
specs/95OO802.555
02555-12
sEcTtoN 15220
PUMPS AND PIPING SYSTEMS
1.OO GENERAL
1 .O 1 Scooe. Work to be completed under this section shall include all labor, plant, materials
and equipment necessary to furnish and install pump and piping systems together with all
appurtenant and miscellaneous items, all as shown on the plans and as specified herein.
1.O2 Related Work Soecified Elsewhere.
Section 02221 - Trenching, backfilling and Compaction
Section 03300 - Cast-in-Place Concrete
Section O99OO - Painting
1.03 Reference Standards.
AWWA - American Water Works Association Rules and Regulations and Water
Well and Pump lnstallation Contractor's Law, State of Colorado.
1.O4 Submittals. Shop drawings and catalog cuts showing all dimensioning, detailing,
anchorage, fasteners, materials, finishes, supports and appurtenant items.
1.05 Storaoe of Materials. All materials shall be stored off the ground and covered by
weatherproof coverings. Support as recommended by manufacturer. All coatings damaged
shall be repaired prior to erection. No materials shall be stored exposed to weather.
2.OO MATERIALS
2.O1 Pitless Unit.
Type - "Martinson" S-Series, heavy-walled brass castings.
2.O2 Well Seal. Positive seal to prevent pollution with expanding rubber packer; to be
provided with vent and cable holes.
2.O3 Well Pumo.
A. Performance:
i) Capacity - 20 gpm at 275 TDH
O
B. Material Specification:
Pump Shaft - Stainless steel, keyed or hex shape, splined to motor shaft.
Shaft Sleeves - Stainless steel.
Bowls - Cast iron with bronze wear rings.
lmpellers - Bronze, dynamically balanced.
Strainer - Stainless steel.
15220-1
I
Fasteners - Stainless steel.
Bearings - Marine type, Buna rubber replaceable.
Discharge head - Cast iron.
Motor - Water lubricated rated for continuous operation; stainless steel
shell; 230 volt, 1 phase; Franklin or equal.
Pump Shroud - As per manufacturer's recommendation.
Manufacturer's Reference - Goulds.
C. Motor Protection - Subtrol or equal.
2.O4 Vertical Turbine Pumo. Not Applicable
2.O5 Water Meter.
Type - Displacement or turbine type.
Size - 1Yz"
Capacity - 5 gpm to 100 gpm
Materials - Bronze main case; ceramic or stainless steelcomponents; thermo plastic
propeller.
Drive - Magnetic
Totalizer - Six digit, 100 division, center sweep, reading in U.S. gallons.
Specification Reference - AWWA
Manufacturer's Reference - Rockwell
2.OO Combination Air Release Valve. Not Applicable
2.O7 Check Valve - Droo Pioe.
Type - Deep well check valve.
Body - Semi-steel
Seat - Bronze
Plug - Bronze
Spring - Stainless steel
Bushing - Bronze
Screw - Stainless steel
Rating - 250 pound
Manufacturer's Beference - "Technocheck" Style 5002F-BR.
2.OB Butterflv Valve. Not Applicable
2.1O Strainer.
Cover - Cast iron
Screen assembly - Stainless steel
Body - Cast iron
Perforations - .125
Manufacturer's Reference - METRA-FLEX
2.1O Sumo Pumo. Not applicable
15220-2
3.OO METHODS AND PROCEDURES
3.01 lnstallatiorl. Follow all manufacturer's recommendations on anchorage, support, and
installation. Provide proper leveling and alignment. Lubricate and adjust according to start
up instructions. Provide all appurtenant items for proper operation including all components
recommended by manufacturer and not specifically shown on the Drawings.
4.OO OUALITY CONTROL
Prior to acceptance, operate all equipment to verify performance compliance and proper
operation.
End of Section
specs\95OO81 5.22O
15220-3
sEcToN 15800
HEATING, VENTILATION AND AIR CONDITIONING
O 1.oo cENERAL
1.01 Scope. Work to be completed under this section shall include all labor, plant materials
and equipment necessary to furnish and install all heating and ventilation equipment systems
together with all miscellaneous and appurtenant items as specified herein and as shown on
the Drawings.
1.O2 Related Work Soecified Elsewhere.
Section 03300 - Cast-ln-Place Concrete
Section O42OO - Masonry
Section 07500 - Roofing System
Section 07600 - Sheet Metal, Caulking and Sealant
Section 16000 - Electrical
1.03 Reference Standards.
SMACNA - Sheet Metal and Air Conditioning Contractors National Association.
1.O4 Submittals. Shop Drawings and catalog cuts, including dimensioning and detailing,
materials specifications, performance curves and motor characteristics as well as special
installation requirements of the manufacturer.
1.05 Storaqe of Materials. All equipment to be stored off ground and covered with
waterproof covering. cover all electrical connections with dust-proof coverings.
1.06 Site Conditions. All equipment sized for altitude of 640O MSL.
2.OO MATERIALS
2.O1 Roof-Mounted Fresh Air lntake.
Roof-mounded fresh air intake.
B urt low -type ventilator
One square foot intake area or rnore with draft preventor.
May require use of motorized louvers.
2.O2 Wall Exhauster.
A. Performance.
Capacity - 2OO CFM minute.
Static pressure - Calculated by manufacturer to be included in submittal.
1 5800-1
B. Materials.
Type -
Construction -
Accessories -
Motor -
Mounting -
Manufacturer -
2.03 Duct. Not Required
2.O4 Motorized Air lntake or Exhaust. Not Required
2.O5 Louvered lntake.
Material -
Size -
Design -
Capacity -
Propeller, direct drive.
Aluminum frame and housing with stainless steel
fastenings. Explosion-proof motor.
Aluminum bird screen and backdraft damper or louvers.
Permanently lubricated ball bearing mounted.
Through-wall.
Penn, Dayton Jenn-Air or equal (see Section 16000).
Extruded aluminum.
12' x 12" minimum.
Waterproof with fixed set of louvers and adjustable set of
louvers which operate by both gravity or multiple set position.
Provide aluminum insect screen.
200 CFM at 0.1" static pressure.
2.06 Electrical Heatino Devices. See Section 16000.
"Tyton" milkhouse type heaters that plug to existing electric outlet.
3.OO METHODS AND PROCEDURES
3.01 Mountino. lnstall as shown on Drawings. Secure roof as recommended by
manufacturer, shimming unit to provide level installation. Make connections to duct work in
air-tight manner with smooth transitions and manufacturer fasteners.
Provide necessary lubrication and adjustments to unit(s) prior to startup.
3.O2 Duct Work. AllWork shallcorrespond to SMACNA recommendations for low velocity
duct construction.
3.03 Sheet Metal Work. Finished work shall have a smooth surface inside all duct work,
free from small fins, imperfect joints or other obstructions which cause noise and increase
friction. All .ioints must be air tight. Any additional duct offsets or turns not shown on
Drawings or increases in length of run necessary to overcome obstacles, shall be called to the
attention of the Engineer so that an acceptable re-arrangement may be designed. Under no
circumstances shall the cross section or any duct be decreased by dents or by pipes running
through it. No quick transitions which restrict area shall be used. Transitions shall have
angular change from the direction of flow of 4:1 (approximately 15o) except where noted
otherwise.
Bends shall be made square to standard radius elbows. Elbows shall have throat radius not
less than the duct dimension. Elbows with smaller throat radius will require turning vanes.
15800-2
Square elbows shall be allowed where shown and where clearances will not permit radius
elbows.
Turning vanes and extractors shall be provided where shown and at all bends and branch duct
take-offs greater than 45o in rectangular supply, return and exhaust ducts. Vanes shall be
Barber-Colman "Deflectoral", Velocitrol or Airturn, or equal, by Titus or Tuttle and Bailey.
Shop assembled double thickness vanes are acceptable if approved. Single thickness vanes
are not acceptable.
3.O4 Louver. lnstall according to manufacturer's specifications. Unit to be set plumb and
level.
4.OO OUALITY CONTROL
4.O1 General. Verify operation of all equipment and systems in field.
End of Section
15800-3
sEcTroN 16000
ELECTRICAL
1.OO GENERAL
1 .01 Scooe. Work to be completed under this section shall include all labor, equipment and
materials to complete the electrical installation, using applicable codes and installation
techniques. All power, lighting, controls, metering systems, appurtenances, accessories and
equipment connections necessary for the system to function as specified in this and other
sections of Specification and as shown on the plans shall be covered in this section.
Work to be performed in accordance with the requirements of this section consists of
furnishing and installing of all electrical work outlined in the Drawings and Specifications for
all power, lighting, controls, and metering systems.
The work shall also include the performance and installation of such necessary work, and the
providing of such necessary material, and devices, of a minor nature that are neither indicated
on the drawings, nor specifically mentioned in the Specifications, but which are necessary for
the compliance with the codes, and for the successful operation of the entire electrical and
control systems indicated on the Drawings and/or described in the Specifications. The
Contractor will be allowed no extra compensation because of this requirement.
1.O2 Related Work Soecified Elsewhere.
Section 03300 - Cast-ln-Place Concrete
Section O42OO - Masonry
Section 15050 - Plant Piping
Section 15800 - Heating, Ventilation and Air Conditioning
Other 15000 Sections
1.03 Submittals. Submit complete equipment and material list showing make, type and
manufacturer's name and trade designation of all the electrical materials and equipment
proposed for use. List shall be accompanied by manufacturer's specifications for each item
of material and such other detailed information as Engineer may require. For equipment that
is different than the brand or make specified, the Contractor to submit proof of similarity and
equality.
1 .O4 Permits and Fees. The Contractor shallobtain any necessary permits for the inspection
and installation of the Work and shall pay all fees in connection therewith. After all required
electrical work has been completed in a manner satisfactory to the Engineer, the Contractor,
when required, shall procure from the proper authority a certificate approving the work and
deliver it to the Engineer.
1.05 Protection of Work. All electrical equipment to be handled and protected so as to
prevent any damage to materials or protective coatings. Do not use conduit for support.
Prevent unauthorized entry into control centers or disconnect boxes.
1.06 Storaoe of Eouioment. All equipment to be stored off ground and covered with
weatherproof coverings. Provide dust-tight coverings where recommended by manufacturer.
Support all equipment to manufacturer's specifications.
1 6000-1
2.OO MATERIALS
2.O1 General. Electrical equipment and fixtures shall be as indicated on the Drawings, or
as specified herein. All electrical equipment shall be approved by the Underwriters'
Laboratories, shall meet the requirements of applicable codes and shall conform to NEMA
Standards and the N.E.C.
All minor items of electrical apparatus which are furnished with the various items of
equipment, but which are neither detailed on the drawings nor set forth in the Specifications
shall be considered part of the electrical work.
2.O2 Conduit Svstem.
A. General
Size - As required to accommodate conductors.
Equipment Connections - Liquid tight fittings.
B. Underground
Material - PVC, Schedule 80
Bury - Minimum 24"
Technique - See Section 02221
C. lnterior
Material - PVC Schedule 40
Location - Exposed conduit subject to field approval.
D. Flexible
Material - Sealite or equal
2.O3 Wire.
A. General
Color Code - Separate color for each phase and neutral consistent throughout.
Type - Copper, type THW, insulated for 600 volts minimum unless
otherwise. Aluminum is allowable for feed and sub-feed with pressure
connectors only.
Size - As required by N.E.C. or as shown on Drawings.
Entrance Wire - Copper or Aluminum URD Triplex or 0000 Copper USE or
better, size2 copper for neutral wire, or as required or limiting voltage drop to
2o/o for the main breaker as required in Part 2.O8, A., 1. of this Section.
16000-2
Branch Circuits - Grounded wire to have white braid limit voltage drop to 3Yo
between load control center.
Control Circuits - Minimum #12
Motor Circuits - Limit voltage drop to 3% between motor and motor control
center.
Lighting Circuits - Minimum #12wherc first outlet is 1OO'or less. Minimum
#10 where first outlet is 100' or greater.
2.O4 Groundino and Bondino. Main ground shall be Euford type using size O copper clamped
to Rebar in 4 places 1O' apart.
A. General.
Ground and bond all service equipment, conduit systems, cable-tray supports,
cabinets, etc.
2.O5 Junction and Pull Boxes.
Material PVC for PVC conduit.
Steel or cast metal for other conduit.
Steel for boxes greater than 1OO cubic inches; galvanized or baked
enamel finish.
Size Minimum 1Yz" deep.
2.06 Outlet Boxes.
Material - PVC for PVC conduit. Steel or cast metal for other conduit.
Size - Minimum depth 1%".
2.O7 Switches.
A. lnterior: Type - Push-button with rubber cover Hubbell or equal, 277 V rating.
B. Exterior: Togel type with exterior cover, 120 volt rating.
Rating: Rated for voltage and amperage loads. Horsepower rated and approved
as disconnect means for 1/3 horsepower and greater loads. All
switches shall be Specification grade.
2.Og Main Distributor PanelAffell Panel.
A. NEMA 12 Distribution panel provided with the following items, all rated 600
VAC and sized per National Electric Code.
16000-3
1. Main breaker.
2. Breaker to supply well panel.
3. Breaker to supply lighting transformer.
4. Breaker for heaters.
5. Breaker for lights.
6. Spaces for two future 50 amp frame breaker.
7. Bond bus for ground.
8. Magnetic contractor for 4O gpm pump.
B. Well Panel.
1. Three position H-O-A Switch.
2. Agastat O-60 second delay, start delay timer on any operating mode.
3. Green on lamp and red off lamp.
4. Elapsed time rneter, 7 digit, non-resetable, reading in tenths of an hour.
5. Cycle counter.
6. lnterlock to chemical feed pump.
7. Adjustable time delay relay for pump running time; one minute to 24-
hour range; equal to Series 328, MOS TDR.
8. Subtrol unit.
2.Og Water Svstem Ooeratinq Seouence
A. Well Pump.
1. Off Mode - Pump off, chemical feed pump off .
2. Hand Mode - Pump on, chemical feed pump on. Overridden by Subtrol
unit.
3. Auto Mode - As pressure in system drops, pressure switch will activate
well pump. Pump shall be de-activated by pressure swith on rising
pressure. Overridden by Subtrol unit. lnitial setting at 40 psi/60 psi.
4. Low Water Cutout - Pump to be provided with a "subtrol" pump
protection (Franklin or equal). All operating modes to be over-ridden by
protective functions.
B. Chemical Feed Pump.
1. Off Mode - Pump off.
2. Hand Mode - Pump on.
3. Auto Mode - Booster pump to turn on with well pump on, and off with
well pump off. Solenoid valve to open with well pump on, and close
with well pump off.
4. Booster pump and solenoid valve shall be interlocked with well pump
motor contractor so that at no time will booster pump be on when well
pump is off.
16000-4
2.1O Pluq Receotacles.
Type
Rating
Covers
2.11 Fixture Schedule.
ary Location
Above door
lnterior as
shown on
Drawings
Duplex
20 amp, 120 volt, unless otherwise shown
Weather-proof , non-conductive
2
Descriotion
1OO W lncandescent vandal-
proof photoelectric control
Two 40 watt, 12OV fluores-
cent lamps in aluminum
gasketed housing for dust
& vapor laden atmosphere.
Reference
Granger 2V637 with
box 2V638
Lithona "DD"
2.13 Electrical Heatino Eouioment
"Titan" milkhouse type heater for plug in to plug receptacle; minimum 125O watts.
3.OO METHODS AND PROCEDURES
3.01 lnstallation. All Work shall be done in accordance with best recognized modern
practice and shall conform to the 1981 N.E.C. and to any revisions to the Code by the local
authority. lf any conflict occurs between the above rules and this Specification, the rules are
to govern. Contractor shall accept this condition upon submitting his proposal and no extra
payment will be allowed in order to conform to this condition.
3.O2 Drawinqs. Contractor shall examine the Drawings and Specifications to determine the
locations and extent of all equipment to be connected to the various electrical control and
metering systems.
The locations of outlets and equipment shown on the Drawings are the approximate locations,
and the Contractor shall install them, so that they are symmetrical in their respective areas.
He shall check the equipment drawings f urnished by the equipment manuf acturer to determine
the correct location for roughing in the outlets for the connections to the various items of
equipment. The changing of the location of the outlets to conform to these conditions and
any other minor changes of location of outlets required shall be considered as a requirement
of this contract and no extra charge will be allowed for such work.
3.03 Cuttinq. Patchino and Trenchinq. The Contractor shall do no cutting, breaking of
concrete, cutting through walls or any other like type of work unless he first obtains the
permission of the Engineer. When such type of work is permitted, it shall be done in a neat
workmanlike manner and any defacement resulting shall be repaired to a condition equal to
that prior to the work being done.
16000-5
3.o4GroundinoandBondino.lh"serviceequipment,conduitsystems,cabletrays,
supports, "uoin"tffiGi- and .neutrar conductor. snarr be grounded and bonded in
accordance with tn.-iggz issue of a'ir"r,i.E.c., o. ," snown on th" Drawings' Grounding
connections to each piece of equipme* "nurr
be made as close to current carrying parts as
practicar. A, ground""onn"",ori.n.ri'ullnstared in
"onJrit-unress
otherwise specified and
connections sha, be made readiry accessibte tor inspection. connections sha, not be made
,nd"rgrornd or concealed in walls or floors'
3.05 Junction Boxes. Ar iunctiOn boxes sha, have crosed covers which must be accessible
after completion f-t ,t'," ,irr"trr". Junction boxes on "on"L"led
conduits shall be set with
covers flush with finished surface, ;;J "; exposed conJuits shall be set exposed' unless
otherwise noted ; ih; Jrawings. lrn"lion ani pull uo*"r of sizes proportionate to the sizes
of conduits o, "onJr",oi" ="rr6d ,nuiil, in"talled wnere t^o*n on the Drawings and where
necessary or convenient for installing the wires'
3.06gutletBoxes.outletsshall.beinstalledinthelocationsshownontheDrawings.The
rocation of outretsTnd equipment snir'ue governed uy siiuctrrarconditions and obstructions'
when necessary, the contr""to, ,n"ii ,"io;.t" outlets.oin"t when fixtures or other devices
are insta*ed, they wi, by symmetri;atif tocated accorJing to the room rayout and wi, not
interfere with other work or equipment. rn any case,itiJtinur location of outlets must be
verified bY the Engineer'
A' boxes sha, be rigidry secured in.position and sha, be so set that the front edge of the box
sha, be frush with ih. tinirn"d wa, or ceiring ,ne or not ,or. than 1/4" back therefrom'
wa, switch outrets sha, be rocated 4 feet above the froor. when rocated near doors or
*i"d"*t they shatl be located close to the trim'
lnterior PIug shall be locate 1'-6" above the finished floor'
ion. Contractor to verify power source ?"d 1t."-?1'^":'^,,T::'^:::,ti
ffi tno.n.r"*,::l':i:l?:,;;=J;l#";'i".c"",i.ctormustinstarthecontror
actortosizeandinstallservicelinetoControlbuildingperNEC.
3.O7
Electric will
transf ormer.
4.00
4.01 Testino.
completed, the
Contractor will
the systems in
systems shall
After the lighti
have been c
satisfy the
After a minimu
all circuits
CONTROL
when the entire electrical, metering and control systems have been
iontractor shart careffii"ri ir," wiringin ir," pr"t"nce of the Engineer' The
e required to furnish ail apparat* n"i"rrury for the te*sting and shall have
oper condition for."tJ"" *i,n attcircu-iis suiiaUfV identified and tagged' The
entirely free from ,ni*rnaional grounds, snort ciicuits and any other defects'
I fixtures, motors, ,.irrr, contiols and all other current consuming devices
ected to the system, the contractor shall again go over the systems and
reer as to their ,roo"i oplrution, including the proper rotation of all motors'
r of two weeks ,,shakedown" operation and prior to acceptance of the work'
;;;i"'; "r,ecrced
and anv defects corrected'
End of Section
16000-6
specs\95OO81 6.OOO