HomeMy WebLinkAboutUpdated Foundation DesignDave Argo
From: Matt Monger <monger20@sopris.net>
Sent: Friday, January 22, 2021 11:34 AM
To: Dave Argo
Cc: Mike Bucchin; Lindsay Krol
Subject: [External] Silver Town Structures - Pinyon Mesa Lots 71, 72 & 73
Attachments: eS4PM73 Soils update.pdf; eS4PM72 Soils Update.pdf; eS4PM71 Soils update.pdf
Dave,
We apologize for the inconvenience but the soil design values for the projects mentioned above were not correct per
the structural design performed by Silver Town Structures. Please see attached updated structural drawings per your
request. If you have any questions please feel free to call Hein or myself & I hope you have a good weekend.
MM
Silver Town Structures
Matt Monger
970-355-9169
monger20@sopris.net
1
STRUCTURAL GENERAL NOTES & SPECIFICATIONS
DESIGN DATA:
A DESIGN LIVE LOADS
I I & R44 S4WYd 40 PSF
1. I.Yd.+rOY Ikon 40 P5F
3. Dex4 40 P5F
B DESIGN CODES
the
Residential Code, RMC), 2015
,ash
with the International Building Code, (IBC), 2015for Special Inspection
American Concrete Institute Building Code (ACI 312-14)1R-14)
American Intl Wte of Steel Construction, Manual of Steel Construction IAISC 9th Edition)
American Institute of Timber Construction, Timber Construction Manual (AITC Slh Edition)
National Design specifications for Wood Construction (ND52014)
/ Garage 40 P5F
5. Wind 115 mph, ExposureB
& Seismic Zane C
GENERAL:
1. Any changes to the contract drawings shall be submitted to the structural engineer for approval.
2 All dimensions and details on stuctural drawings shall be verified against the architectural drawings and any discrepancies shall he brought
to the attention of The architect prior to fabrication or construction Details an the structural drawings are typical. 00 NOT SCALE DRAWINGS
3 All openings Through the structural system shall be approved by the Engineer.
4 Contractor shall provide all necessary temporary bracing, shoring, guying or other means to prevent excessive stresses and to hold the
...Ira! dements in place during com0ucilan
5 The contract structural drawings and specifications represent the finished structure. They do not Indicate the m0hod of construction The
contractor shall provide all measures necessaryto protect the structure during construcllon Such measures shall include, but are not limited
to bracing. shoringfor loads due to construction equipment and protection of edsling structures 0bservatIon vhhs to the site by the
structural engineer shall not Include inspection of the above hems nor will The structural engineer be responsible for the con0aclar's means,
methods, techniques, sequences for procedure of construction, or the safety precautions and programs Incident there to
6 Option are for the convenience of the conlracmr He shall he responsible for all changes necessary if he chooses an option and shall
coordinate all details The cost of adddional engineering work necessitated bysdec1Ton of an option shall he borne by the contractor.
7 Any engineering design provided by others andsubmitted for review shall bear the seal and signature of an engineer registered in Colorado.
O Dimensions on the structural drawings are mart with the exception of masonry and sawn lumber dimensions which are nominal, Verify all
dimensions with the architectural drawings
9 Where required construction details are not shown or noted on these plans The contractor shall notify the engineer and the engineer shall
provide sufficient details for the work to proceed.
10. Construc0Ion materials shall be spread out if placed an framed construction. Load shall nal exceed the design live load per square foot
11 Shop drawings shall he submitted to the architect for all structural hems. The Engineers review is Intended only as an aid to the contractor
far obtaining correct shop drawings. Responsibility for correctness shall rest with the contractor. The contractor shall review all shop drawings
pr
ior to submittal Items not In accordance soft the contract documents shall be gamed upon his renew. The shop drawings do not replace
he original contact drawings Itisthe contractors responsibility to make sure items are constructed to the original dravangs The adequacy
of engineering designs and layout performed by others rests with the designing or submitting authority.
OSLOOY2.Yd 1718AMlING;
A DIMENSIONAL LUMBER
All wood members shall he as described in the 2001 edition of the "National design Specifications for Wood Construction" by the National
Forest Products Association and the W W PAW
1 Unless otherwise noted an The drawings. wood framing members shall be Douglas Fir/larch, Grade 22 or better. Redwood members
shall be construction grade
2 Sizes shown are nominal, except when noted as RC (Rough Cut) They are full dimensions.
3 All wood members attached to concrete or masonry shall be redwood or strandguard engineered lumber.
4 Block all'oi1C0 and rafters per the l R.0
I
6. FAS11M lOAKA OLVIIIOCTp6
Alternate fasteners and connectors to Those listed below, which have I C B O. approval, may be used with approval by the Engineer.
1 Connectors shown on the plans are manufactured by the 51mps0n strong -ire Company, Inc Connectors by other manufactures shall
be deemed as equivalent if their rated capacity Is equal to or greater than that of the connector specified Follow manufacturer's
recommendations for installation of connectors
2 All timber nailing and connections shall conform to the IRC and AITC
3 Bolls for wood member comedians shall be 3/4" diameter, ASTM A307 wtth a minimum 11/2" washer at each end (unless noted
otherwise).
4 Sell -drilling fasteners for the a.chment to structural steel shall be "Tells" fasteners as manufactured by Buildea
C NYNC1001NIATOM
Plywood sheathing for roofs, floors and exterior shear walls shall be APA Grade -Trademarked C-D. Exposure 1, unless otherwise noted
1 Roof Diaphragms MTh pll) shall be5/B", APA rated sheathing. 40/20 place with B'-0"dimension perpendicular to the joist, rafter or
truss span End joists shall be staggered Attach plywood at edges with Bd nails at 6" 0 C and at Intermediate supports with Bd nails at
2. Floor Diaphragms (250 p1N shall be 3/6-, AAA anted Sturdl I.Ilnrw, 21 0 C place with B'-0" dirwm,on pnppMa.N to the joist span.
End pints shall be staggered. Attach ply'mmi veils APA glue end at edges nail with Bd nails at 6" O C xad •L.,Nrm..Nate supports with
Bd nails at10"OC Sheathing shall he T&G
3. Typical Exterior Wall Diaphragms (180 pif, 252 plf wind) shall be 1/2". APA rated sheathing, 24/0 with end a..n. W agered. Studs shall
he 16" 0.C. and sheathed full height. Attach plywood at edges with ad nails at 6" 0.C. and at inlermedrale Ir,Pponl 3reh Bd nails at B"
OC
D GLUE LAMINATED BEAMS Laminated member shall be designed and fabricated In accordance with "The Standard Specifications for the
Design and Fabrication of Structural Glue Laminated lumber" published by the AITC and the appropriate Lumber Producers' Association
1 Use exterior glue for all eaposed laminated members
2 All members exposed to weather shall recelve one coal of end sealer at trimmed ends. Seal all exposed surfaces with sealer coat as
soon as practical after erection
3 Appearance grade shall be in accordance with the architectural drawings
4 If beam is cantilevered and the cantilever is greater than one-third of the back span. Install beam "TOP" down
5 Allowable unit Stresses for dry conditions of use required shall be as follows:
Members stressed principally in bending such as beams & girders (AITC 24F-V4) unless otherwise noted on drawings
Fb=2400 psi 00=1fi5 psi R(perp)=650 psi E=1 8E6 psi
Members stressed principally in compression or tension such as columns & truss members (AITC
24F-VR) Unless otherwise noted on drawings,
R(parallel(=1650 psi E=1.1E6 psi
E MICRO TAM BEAMS
Micro -laminated members shall be designed and fabricated in accordance with the "National Research Board" and the "National Design
IPerlt0Wrrrb VAwe'
1 Allowable unit stresses for dry conditions of use required shall be as follows:
Fb=2600 psi F2=285 psi Fr(perp). 250 psi E=1 8E6 psi
1. I.rla8mk10 Nrettaled ,04 11,MNIr8MRwalk Ikempiorhatunrorxoaara4n44Nn.
3. Holes, cuts, or notches not previously approved by the engineer or the manufacturer shall not be made.
4. Micro -laminated lumber is marked on The drawings as "ML" and shall he 13/4" wide, unless noted otherwise
F. FABRICATED W0002 /15{ff.1es(
I -series fabricated joists wish lNrTWll wood flanges and plywood webs called for on the drawings (T21/210, T11/360, T11/5101 areas
riurarbordwl by Oa Fiws•Eoirs Corp.. Joins by other manufacturers may be used If VIMIIEdR I'IAl11.YIRertmn Is equal to or less than that
aOw p.I,YCIflr4 For Ow RNtitular span and spacing and when authorized by Ihe/thlidt ahinell'eer.
1 Fabricated wood joists shall be in accordance with the manufacturer's recommendations.
2 Supply all plates, blocking. bridging, bracing, stiffeners and other related items as recommended by the manufacture,
G PRE -FABRICATED TRUSSES
Provide engineered open web roof trusses as profiled by drawings and designed to handle live and dead loads wiTh deflection limits of
1/360 as indicated on the structural Mnwings. Submit design calculations, bearing the seal of the manufacturer's Engineer, with the shop
drawings. Calculations shall Indl0lr species and grade of lumber, design loadings and allowable stresses, force analysts of each member
and design of earls connection.
1 Truss manufacturer shall be a member of the Truss Plate Institute (TPI) and the Component Manufacturer's Council.
2 Shop drawings shall he supplied to detail each truss type, truss layout, bracing and any applicable connections with hangers related to
truss b Truss connections
3 Supply all plates, blocking, bridging, bracing, stiffeners and other related Items as recommended by the manufacturer.
CONCRETE:
A CONCRETE REQUIREMENTS
Camp. has yarn e*YanelNw Sh.l fir..1.1.110 r lcco0Rner wilt Pp l4W,I r4mtml e11tie
Amrrk0n CwraN Ntllnd* Il.tlaal Coin, M 1111 arr11PRRE148 W1 Nryha01,I Concrete for Buildings. ACI
301 ....Pr Port w m 41 wtdbp Instnikas pro ACI log A Sop
1 Concrete shall have a minimum aamprnslve strength at 28 days of:
Walls & footings 3000 psi
Slabs 3000 psi
2 Provide Type II cement th,0U16,ut with 4%air entrammenc
3 Mechanically vibrate concrete,
4 No admixtures shall be used without approval by the engineer.
5 Addlron of water to the batch material for insufficient slump is not permitted
0, Do not place pipes, ducts or chases in the structural concrete without the approval of the engineer.
T. Thoroughly dean all rase and construction Joints prior to placing concrete in adjacent pour.
M. CAacy.In Ikll.ral#.as fe•Mlrwwlx .law afro
B REINFORCING
Detailing, fabrication, and erection of reinforcing steel bars shall comply with the ACI Manual of Standard
Practice for Detailing Reinforced Concrete Structures ICI 315
1 JI.Wshsxg WI WB M MOMA611&.N.
2 Welded wire fabric shall conform to AMA A185 Furnish in flat sheets only.
3 Concrete protection for reinforcement:
Cast against and permanently exposed to earth Sin
Exposed to earth or weather- XGM11 bar. 2 in
M3-M5 bar_11/2 in.
Not eTmosed to earth or weather.- slabs & walls-3/41n
beams & cols._ 11/2 in.
4. Reinforcing lap splices shall be a minimum of 36 bar diameters unless noted otherwise. lap wire fabric
reinforcement one full mesh plus 2" at sides and ends and wire together.
5 Splices in horizontal beams and walls shall occur at mldapan for top bars and over supports for bottom
bars
6 Discontinue one-half of horle,n2l steel across construction/control joints.
7 Provide corner bars of equal size and spacing around all corners
8 Provide 2-05 bars with a wmrnm of 1'? pro4.pv, law^1 the sides of all openings in walls, beams
and slabs Provide 1-11524'0" diagonally eta. rR mews ,0,Wl1ortWW
9 Provide accessories necessary to properly support reinforcing at the positions shown on The plans
10 Reinforcing spacIngs are maximum on center and all reinforcing Is conlinu0us, unless noted otherwise
C SLABS
1 Provide control joints at 12'-0" max spacing or as shown an the plans.
2 Provide minlmum4. compacted gravel under floor slab on grade The material shall consist of minus
2-Inch aggregate w/ less than 5UK passing the No. 4 sieve and less than 2%passing the Na 200 sieve
(JJ)DAT/ l
A. GENERAL The foundation design was based on soils investigation by Kumar & Associates, Inc.00 1X1
No 19-7-221 01, dated August 10, 2020.
Maximum allowable bearing pressure - 1,500 psf
• 411dI1 iy- ay 'AR 55
i k%WARM
1. Contractor shallprolde all necessary sheeting. shoring and brxingwhere required to properly and safely
complete the work
2 Avoid excessive wetting or drying of the foundation straw lion during construction Keepea¢aollons
reasonably bee of water at all lime and completely free of water during placement of concrete
C BEARING REQUIREMENTS
1 Footings shall bear an at least 3 feet of compacted structural fill & below the 36' host depth required by the soils engineer. Any
discrepancies with the fooling elewtions shown an the plans shall be brought to the attention of
the engineer.
2 Building shall be founded on continuous concrete spread footings placed an undisturbed natural soil
D. GENERAL REQUIREMENTS
1 Center foundations under columns and walls unless noted otherwise.
2 Provide foundation ventilation in crawl space areas as required by The I R C .
3 Backfill on walls with fill an both sides shall be compacted in equal lifts each side of wall Walls backfilled
on e side only shall have all supporting slabs, permanent framing or temporary bracng in place prior to
placement of the hackfill (unless noted otherwise on plans]
STRUCTURAL STEEL:
A IIRUCIVPM Mitt
Asixtrwal rdarltkSlllldrtadAliLrirrte4 ran remind Yi.RM14Ra ortlit lorPINetaf the AISC Manual of Steel Construction and
Mir Lade ofNraNsll Ratite. INN wad. ybre.YY the tl►Nv1w2.101W Ala Standard Rubl}allen hired'ae. Comply with AWS
B 1.I %whac w.ld1llcda.
1 MYaaFL0Nm.NMth I. ATA1 A16enPW b.Msaha M M1M AYp2 Duda 0b..,1 brbatW.w..l&StdW rank,. live A11M ARM din
fNnw gw d11m..loch shakedown I V ASt1 w531W. A
2 Bolls shallcanlorm to ASTM A325N Anchor bolls shall conform to A5TM A307 Bolt size shall be3/4" diameter unless noted otherwise
Installation shall he in accordance with MSC Specifications for Structural Joints Using ASTM A325 or A490 Bo9s,1970
3 All welds shall be made with ETOXX electrodes
•
4. Prime all sled with approved primer paint to exposed halls, welds, and abraded shop paint areas.
5 All column base plates shall have 1" minimum grout to prone continuous bearing.
B GROUT AND ANCHOR BOLTS
1 Dry pack or grout shall be shrink reslslant Ember° 153 or equivalent
2 Expansion bolts shall he Simpson "Wedge -NI" or approved wedge Type. Installed in accordance with the manufacturer's requirements
3 Headed anchor studs (H D A 5) shall be attached to structural steel with equipment approved by the stud manufacturer according to the
stud manufacturer's recommendations 4 Anchor bolls embedded in concrete shall be placed with setting templates 5 location and
coordination of anchor bolt placement shall be the responsibility of the steel fabricator. Steel fabricator shall supply anchor bolt setting plan
C STEEL CONNECTIONS
1 Provide bolted connections for steel beams per Par[ 4 and Part 5 of the AISC Manual of steel Construction IN IAI where otharM,r damn.
provide connections to support loads equal to one half the total uniform load capacity of the member.
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General Notes and Details
REVISIONS
12/23/20 PERMIT SET
General Notes
and Details
JOB NUMBER
20-525
DATE
01/22/21 Soils Report
DRAWN BY
MAM
CHECKED BY
HLB
DRAWING NUMBER
S4