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HomeMy WebLinkAboutEngineer ReportsKURTZ & ASSOCIATES, INCORPORATED Structural Consultants 5012 County Road 154 Glenwood Springs. CO 81601 Phone+ Fax: (970) 945-6305 FIELD OBSERVATION SUMMARY TO: Garfield County Building & Planning Attn: Matt Provost DA TE : December 08, 2t>I 5 PROJECT: Craig Petersen Residence 5109 County Road 154 Garfield County, Co. Kurtz and Associates, Inc . is the structural engineer of record for the noted single family residence . As such, of office provided structural construction documents dated April, 2015 and revised April 23, 2015 . The construction documents include a framing system above the garage comprised of pre-manufactured attic trusses and attic floor joists which frame in between multiple ply attic trusses . The construction documents specify wood sawn 2 x 10 attic floor joists spaced at 16" on center . The pre-manufactured attic trusses were constructed with 12.3/4" deep bottom chords . The framing contractor chose to frame the attic floor with the specified 2 x I 0 's. So that the floor and ceiling would be flush with the attic trusses. on top of. and parallel to each 2 x I 0 joist he installed a wood sawn 2 x 4. He glued and screwed each 2 x 4 to the supporting 2 x 10 with 3/16" diameter Timberlok screws spaced at 24" on center. Tills installation is structurally acceptable . To accommodate the 3/4" diameter piping for the in floor heating system, and number of l " diameter holes were drilled in the floor joists . The observed boles were located at the top of the joists and within 24" of the supported ends of the joists . This is not an ideal location for the hole, but is, in this case. structurally acceptable. CONSULTING E1'1~1\/EERS I .. z. ~ba.r 5 .F-f.5 lrzs,?ec .Z-:o/?. /(ut l:z 5 A>>oc.,) 1.n.c i,. ye~ -I: eJ {},o i: "'J> .;:,. /(e cJ '</ a.r Q /le_ /'lo -&.d /'e~:Je//C€. _Fe.c;/::~ ~--zes. 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Of .Z, r-;~/lJ"' -ho"' u.J/ A,/zi::a/·~vit De 1,,.:1 B/s; '17;Ples. -fo f<> Crewv/ y<l.c.e W"V~ E/1-f,.;' W,,.,/( @ Gu-j Q .)/ "'Wev/1:-ov/' wR-11 @ >o~fl 12/1..# ~fl !'-ec;; ... ~~Au... ""1"ks e &</ t:V/t; .LJ-er tff;i1 t.t/'e. '6 j I ) he ('ei11/Jrc.ed ~/ {'z), :ti-~ ai~~ /io,-,":ztM~J ..f /"7 j .66 J/;~. /-f i> ~-f.vv ~/'a/f'y a.ccf7/q,£k, .fa rer/1/7/ce ""'/ {i) ..J~ AJ,,,._ -+ rz> -'II"> hp. A// A_,...... d CJw.R(s ? /' ~,.,,;;,.CQ ~ /1-f-@ -#-> Co/I); f.·04 > /;,,.,1d Pe as. pec:/?eJ CONSULTING Ef..f<1Jl\/EERS Job Code __..L..&-~_#r._-.u;_11_ By ~JK Date ' oC,-//-/~ SubJect Dn f..v Checked Sheet _g_ Of :Z Veri:'caf ~~~ f.·ori w <Vff a,./1./7 i /I a I I # . ~ c~ses -=-5@ /g c/ .. c_ ~~ceJ ~ i 0 -f 9« Co/lc../e~ t,v~.lf~ - S-f ,,,,_ bb,j ff.. s N:~-IJ/'a!.l"W/lt ; 5-a.cc.e/7-f,,_/,fe. Tk codrc..c~r >£vtJ 1/J.sc1/<2-~I Ae ~~s­ Ja7C/.,._ ~ /1-t«'ltJW.f>/ tJ /I s,,--t e >a /,/;. ./ ~Se /;co"",> Ca/1 te. s~.6t~cl ~/l ~ f,ftie~ ( ha:. s:s.. / lec()/14/IW/I/ d .f /~ Ow rz {7r' -f J~ a. ~:J ,11.· /Jcr.11 f' //(.1,4-tb~r-oj} ;:;ho~ . 0 .f' r/e . /7/'~ce~>. • TOP SLAB REINFORCING WNR 9X12 023.3XD15 1&21" ACCESS a·-5· I ,.:-==~=====.n:.------II I , 11 II ------;l f II I : I I I I II I I ·' NOTES: 1. ASTM C1227, 4 ,500 PSI CONCRETE, NOT TRAFFIC RATED, MAXIUUM BURY DEPTH 4' FROM TOP TO SURFACE 2 BASE AND WALLS POURED MONOLllHIC WITH SEPARATE TOP SLAB AND LI DS II I I II all~ t; .I A ~ i J ::::> • 0 ,... I , 1 3 INLETS 3. T ANK U SES S TANDARD 21" DIAMETE R RISER SECTION WITH TANK LIDS IF REQUIRED 4 . ALL INLETS ANO OUll.ETS HAVE A POL 'Yl.OK PIPE SEAL FOR 2. 3 OR 4" PVC, SOR 35 OR SCHEDULE 40. ~ ~a·I­ ' PLAN VIEW . \, " ·' : . . ... \ ~©-1 ----'E . t 4"X16" • ;.. I 'It BLOCKOUT~; I N 1 in ·' ,..... -t ~ ~ .--::5· I 1' I I I I 1 I ____ _1 1 ____ _J INSP[CTION PORT , . ., l' ' : .... ------I '• • 0 :; I ':ot fil I 4·-1oi" C-. ··. ~2·-33•_. T . .... . . . . -. f • ... ----~-------s·-1~·~~~--------i • ... SECTION A-A v\'. \~,6ttY L~h ~-----~-· ..... --- ."1'.lfll'o Cl .. Q ... c i; ~ ~· ~ 6 ~, ... :>Ch .'il'l\'ll 5. INLET ANO OUTLET REQUIRE A TUF -111E HB BAFFLE INSTALLED ON THE INSIDE OF TANI<, REFER TO STA1E ANO LOCAL CODES , ·1 I I I I I OUTLET ~---------j_~L_=-_=L:t:._t ______ -=---- t"" r---:-il it_-___ ~ I \ I I L ./ ___________ J r r I I I I I .. I 1-s·-11~· -I SIDE VIEW WALLS/FLOOR REINFORCING WWR 6X6 W2.9XW2 .9 ~· ~~:.,:: .. .-• PRECAST CONCEPTS STANDARD DRAWINGS 2311 Rll/£R ROAD GRANO AJNCTION. CO 81501 970-245-9301 'HS BAii $ !»€ IQI Dlf ~ llllAWleC 0 1· f nlS 8AR IS HOT OIE IOI AD.lJSl StAlf 1500 GALLON PRECAST SEPTIC TANK WllH CAST IN BAFFLE 7-9-14 Warranty 1. ALL SERVICE septic, LLC guarantees that the design of the installed onsite wastewater treatment system (OWTS) will operate as intended for a period of 2-years commencing the date installation is substantially complete. Design means a design letter, drawings, specification, and approved alterations. If malfunction within the 2-year warranty period is determined to be caused by the ALL SERVICE septic, LLC design, the flaw in design will be repaired to working order at no cost to the property owner. 2. This warranty does not cover damage or malfunction caused by: a. An act of nature; b. Misuse or abuse of the OWfS; c. Improper use of any of the components; d. Materials manufactured by a third-party, including operational parts of the system and components such as pumps, septic tanks, and distribution components; e. Normal wear and tear; and f. Installation of OWTS components by a third-party. 3. When installation is performed by a third-party, ALL SERIVCE septic, LLC only guarantees the function of ALL SERIVCE septic, LLC's design when ALL SERIVCE septic, LLC has been given opportunity to inspect and approve the third-party installation. ALL SERVICE septic, LLC in no event guarantees a third party's performance, including but not limited to: pipe bedding, settling of septic tank(s), gluing of pipes, leveling of components, and similar practices that may cause issues with the functioning of the owrs. 4. For this warranty to be valid, ALL SERVICE septic, LLC shall be provided first opportunity to have its representatives assess any damage to or malfunction of the OWTS. If the property owner, or an agent of the property owner, makes changes or performs inspection of the OWTS before ALL SERVICE septic, LLC is provided opportunity to do so; this warranty shall be voidable by ALL SERIVCE septic, LLC. 5. Upon malfunction of the OWfS where the direct cause is indeterminable, but is potentially a result of a faulty design on the part of ALL SERVICE septic, LLC, this warranty may not be invoked until all other warranties made by third-parties are exhausted. 6. ALL SERVICE septic, LLC guarantees that all design work performed directly by ALL SERIVCE septic, LLC will comply with codes and regulations within the applicable jurisdiction. 7. This warranty shall be void upon failure to implement recommend and required maintenance, or practices by the property owner or a third-party in violation of jurisdictional codes and regulations. Limited Liability Clause The property owner understands that ALL SERIVCE septic, LLC carries liability insurance and such liability shall be limited to the policy held by 'Preferred Contractors Insurance Company'. Insurance documents will be provided upon request." SUBSURFACE The subsurface was investigated on July 13, 2015 by digging lwo soil profile test pit excavations (Test Pits). A mini.excavator was used to excavate the test pits. Visual and tactile soil analysis was completed by Carla Ostberg at the time of excavation.1 The materials encountered in the Test Pit #1 consisted of dark brown, moist, topsoil to 1.5-feet, underlain by reddish brown, gravelly, loam to a maximum depth explored of 7.0.feet. No bedrock or groundwater was encountered. The materials encountered In the Test Pit #2 were similar to those encountered In Test Pit #1 . No bedrock or groundwater was encountered. A tactile analysis of the soils was taken from Test Pit #1 at approximately 3-feet below grade . The soil formed a ball, and a ribbon less than 1-lnche before breaking. Soil structure shape was blocky, soil structure grade was moderate, and consistence was friable to firm. STA sizing is based on Soll Type 2, Loam with blocky structure type and moderate structure grade. A long tann acceptance rate (LT AR) of 0.6 gallons per square foot wlll be used to design the OWTS, In accordance with Table 10-1 Soll Type 1 presented In the Garfield County On-Site Wastewater T1&abnent System Regulations, adopted Aprll 14, 2014. TestPit#1 1 Carla Ostberg holds a Certificate of Attendance and Exam ination from the CPOW V1Sual and Tactile Evaluation of Soils Training . Page4 should be checked to ensure that no additional water is being discharged to OVVTS. For example, a running toilet or leaky faucet can discharge hundreds of gallons of water a day and harm a ST A. If an effluent filter or screen has been installed in the OVVTS, we recommend this filter or screen be deaned annually, or as needed. If the OVVTS consists of a pressurized pump system, we recommend the laterals be flushed annually, or as needed. The homeowner should pump the septic tank every two years, or as needed gauged by measurement of solids In the tank. Garbage disposal use should be minimized, and non-biodegradable materials should not be placed into the OVVTS. Grease should not be placed in household drains. Loading from a water softener should not be discharged into the OVVTS. No hazardous wastes should be directed into the OVVTS Mechanical room drains should not discharge into the OWTS. The <YNTS is engineered for domestic waste only. ADDITION"!L CONSTRUCTION NOTES If design lndudes a pump, air release valves and weep holes must be installed to allow pump lines to drain to minimize risk of freezing. The pump shall have an audible and visual alarm notification in the event of excessively high water conditions and shall be connected to a control breaker separate from the high waler alarm breaker and from any other control system circuits. The pump system shall have a switch so the pump can be manually operated. Excavation equipment must not drive in excavation of the STA due to the potential to compact soil. Extensions should be placed on all septic tank components to allow access to them from existing grade. Backfill over the STA must be uniform and granular wtth no material greater than minus 3-inch. INSTALLATION OBSERVATIONS ALL SERVICE septic, LLC must view the OWTS during construction. The OWTS observation should be performed before backfill, after placement of OWTS components. Septic tanks, distribution devices, pumps, dosing siphons, and other plumbing, as applicable, must also be observed. ALL SERVICE septic, LLC should be notified 48 hours in advance lo observe the installation. LIMITS: The design is based on infonnation submitted. tf soil conditions encountered are different from conditions described in report, ALL SERVICE septic, LLC should be notified. All OWTS construction must be according to the county regulations. Requirements not specified in this report must follow applicable county regulations. The contractor should have documented and demonstrated knowledge of the requirements and regulations of the county in which they are working . Licensing of Systems Contractors may be required by county regulation . Please call with questions . Sincerely, ALL SERVICE septic, LLC (t~~ /,{, { ',;/ \. Carta Ostberg, MPH, REHS TestPll#2 DESIGN SPECIFICATIONS Design Calculations : Average Design Flow= 4 Bedrooms (house)+ 1 Bedroom (cabin)= 525 GPO+ 150 GPO= 675 GPO LTAR = 0.6 GPO/SF 675 GPO I 0.6 GPO/SF x 1.2 (gravity bed) x 0.7 (chambers)= 945 SF The new OWTS design is based on 4-bedrooms in the main residence and 1-bedroom in the Cabin. An average daily wastewater flow of 675 GPO will be used. The system installation will include a new 1500- gallon, two-compartment concrete septic tank with an effluent filter installed on the outlet tee. The STA will consist of two beds, one with three rows of 14 'Quick 4' Infiltrator® chambers connected with a level manifold (STA 1), and the other with four rows of 10 'Quick 4' Infiltrator® chambers for a total area of 984 square feet of infiltrative area , The infiltrative area may not exceed 4-feet below native grade . Inspection ports must be installed In all four comers of each bed and may be cut to grade and covered with a sprinkler box for access . The ST A should be fenced or otherwise protected from traffic. The component manufacturers are typical of applications used by contractors and engineers in this area. Alternatives may be considered or recommended by contacting our office. Construction must be according lo Garfield County On.Site Wastewater Treatment System Regulations, lhe <:1NTS Permit provided by Garfield County Building Department, and this design. REVEGETATION REQUIREMENTS An adequate layer of good quality topsoil capable of supporting revegetatlon shall be placed over the entire disturbed area of the CINTS installation. A mixture of native grass seed that has good soil stabilizing characteristics (but without taproots), provides a maximum transpiration rate, and competes well with successional species. No trees or shrubs, or any vegetation requiring regular irritation shall be placed over the STA. Until vegetation ls reestablished, erosion and sediment control measures shall be implemented and maintained on site. The owner of the CINTS shall be responsible for maintaining proper vegetation cover. OPERATION INFORMATION AND MAINTENANCE The property owner shall be responsible for the operation and maintenance of each ONTS servicing the property. The property owner is responsible for maintaining service contracts for manufactured units, alternating STAs, and any other components needing maintenance. Geo-fabrics or plastics should not be used over the absorption area. No heavy equipment, machinery, or materials should be placed on backfilled STAs. Livestock should not graze on the STA . Plumbfng fixtures