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Home My WebLink AboutConstruction Observation & Testing Completion Letter 05.23.16~ec HEPWORTH-PAWLAK GEOTECHNICAL May 23, 2016 Silich Construction Inc. Attn: Scott Henriksen 1461 River Bend Way Glenwood Springs, Colorado 81601 (scou@silichhomes.com) H .. pworth·Pawl.11; Ge\•lcchoic.1l, Inc. 5020 C.iumr Ro~d 15-J Gfom>111.i<l Sprinµi, Clll,1raJ11 81601 rhunc: 9i0·9-4S·i9SS fax· 9i0·9.f5-IH5.J cm~1l: hr::.:o@hri:c\111.-ch.eom Job No. 115 0661 Subject: Construction Observation :ind Testing Completion Letter, Proposed Residence, Lot 269, Ironbridge Development, 25 Eagle Claw Circle, Garfield County, Colonido Gentlemen: As requested, we are providing a summary of our observation and testing services provided for the above referenced project. The reports of the services requested and perfonned for the project are allached. We previously conducted n subsoiJ study for design of foundations at the site :ind presented our findings in a report dated September 14, 2015, Job No. 113 471P. The foundation bearing soils within the building excavation were observed and tested for compaction on February 8 and 12, 2016 and are suitable for the recommended bearing pressure of 1,500 psf. Perimeter grade beam reinforcement steel was observed on March 4, the post-tensioned slab tendons were observed on March 7 and the fresh concrete for the foundation was sampled on March 8, 2016. Tensioning of the tendons was observed on March 11, 2016 according to the project specifications. The results of the tendon tensioning were submitted to Fuhrmann & On1f for their approval. We did not observe placement of the rigid foam insulation along the building perimeter, but since the perimeter grade beam has a minimum depth of 36 inches, it provides adequate frost protection rather than by insulation . Based upon inferences drawn from our observation and testing, as documented by the attached daily field and laboratory reports, it is our professional opinion that the referenced construction has achieved the specified conditions. Please recognize that construction observation and testing are sampling functions that involve direct Parker 303·84 l · 7119 • Colorado Springs 7 J 9.6JJ.5562 • Silverthorne 970·468· 1989 Silich Construction lac. May23, 2016 Page2 observation and tes ting of very limited amount of the overnll work to evaluate the construc tion comp li ance . If you have nny quest ions or need further assistance, please call our office. Sincerely , HEPWORTH-PAWLAK GEOTCHN ICAL, INC. SLP/ksw Attachments: Observation & Testing Reports: 2/08/16 through 3/1 J/16 cc: Silich Construction -John Silich (jobn@ s ilichconstruction.com) Job No llS 0661 c;g£tech 6020 County Road 154 Glenwood Springs, Colorado 81801 Phone: 970-945-7988 Fax: 970·946-MS4 HEPWORTH · PAWl.AJ( GEOTECHNICAL tgmG~,mn Earthwork Compaction Testing Report Client: Silich Construction Inc. Job No.: 115 0661 Day: Monday Attn: Scott Henriksen Date: 2/8/16 303 AABC, Suite J Page: 1 of 1 Aspen, Colorado 81611 Project: Proposed Residence, Lot 269, lronbrldge Development, 25 Eagle Claw Circle, Garfield County, Colorado Weather: Clear, calm, dry Temperature: 27°at11:00 am Earthwork Contractor: Logan Equipment Used: Ground heater, blankets Description of Building pad existing grade had been cleared of deep snow and weeds, ground Earthwork Tes ted : heater piping and blankets placed and heat applied to thaw the area. Four moisture/density tests were performed to evaluate existing conditions. Tests indicated compaction below recommendations with moisture contents ranging from about 2% below to 3o/o above optimum. The sons were generally not frozen but some surface ice was remaining in areas between the heat pipes and low areas of the pad were muddy and soft under foot at the time of our site visit. Sample(s) Obtained : Per discussion with Steve Pawlak in our office, no sample was obtained. Proctor value referenced is from visually similar sandy silt material sampled from Lot 278. Verbal Steve Pawlak in our office and Scott Henriksen with Silach were informed by Communicat ion : phone of our test results and observations. The subgrade needs to be stripped at least one foot and re-comeacted. Placement and Compaction Procedure : Not observed by HP Geotech. Lift Thickness : Max. Rock Size : Moisture Conditioning: Compactor(s) Used : Number of Passes: Nuclear Gauae Moisture/Densitr Test Results Location Field Dry Field Field Min. Test Depth or Moisture Comp. Proctor No. Elev. Density Content Comp. Req. Lab No. Lot 269 Building Pad (pcf} % (%) (%) 1 15' S, 4' Wof NE comer rough slab 106.8 11.S 94 98 091-15 subgrade 2 12' S, 9' W of NE corner rough slab 108.0 10.9 95 98 091-15 subgrade 3 Approximate center of pad rough slab 101.6 15.3 89 98 091-15 subnrade 4 10' N, 20' W of SE corner rough slab 105.9 15.5 93 98 091-15 subarade Proctor Sample Reference: Lab No. Method Description Max. Dry Opt. Dens . pcf Moist.(%) 091·15 (115066C) ASTM 0698 Sandy Sill 114.0 12.8 ·~REPORT PReSEHlS OPINIOtlS AS A RESULT OF OUR ~RVllTIOHSOF FIU PLA&EMiNT WE Hll\IE REUEO OHlHE COllTftl.CTOR TO COHTltlUE APPLYING THE RECOMMENDED COMPACJlVE EFFORT ANt> MOISTURE TO Fill DURIHG TI£ TIMES WHEN OUR OBSERVER IS tlO'I' OBSERV'.Hu OPERATIONS TIE NUCLEAR CENSOfA!lER t.ETHOD OF TESTING WAS USED It~ SUBSTAHtl.\L ACCDRDNICE V.llTH A$1M D 6934 Distribution Aspen Signature Homes ar lronb::?:::::~.l!!t) Slllch Construction -Hayden Hors~ Slllch Construction -John Slllch I Slllch ConsttucUon -Scott Henriksen ~ Slllch Construction ·Amanda Jenklns ~on.c;om) TJW/ Thomas J. Westhoff, CET Steven L. Pawlak, P.E. Field Technician Reviewed By 6020 County Road 154 ~ech Glenwood Springs, Colorado 81601 Phone: 97D-946-711BB HEPWORTH-PAWL.AK GEOTECHNICAL Fax: W0-1146-8454 hpgeo@lhpgeotecb.com Client: Attn: Earthwork Compaction Testing Report Slllch Construction Inc. Job No.: 115 0661 Day: Attn: Scott Henriksen Date: 303 AABC, Suite J Page: Aspen, Colorado 81611 Friday 2/12/16 1 of 1 Po· ct r ~e Proposed Residence, Lot 269, lronbridge Development, 25 Eagle CJaw Circle, GarfleJd County, . Colorado Weather: Clear, calm, dry Temperature: 43° at 1 :00 pm Earthwork Contractor: Equipment Used: Description of Earthwork Backfill for under post-tensioned stab was tested for compaction. Initial Tested: compaction test indicated poor compaction and was recompacted and re- tested. Sample(s) Obtained: Verbal Communication: Placement and Compaction Procedure: Observed by HP Geotech. Lift Thickness: Max. Rock Size : Moisture Conditioning: Compactor(s) Used: Number of Passes: Nuclear Gauge Moisture/Density Test Results Location Field Dry Field Field Min. Test Depth or Moisture Comp. Proctor No. Elev. Density Content Comp. Req. Lab No. (pcf) % (%) (%) 1 southeast corner subgrade 105.4 12.5 92 98 006-15 2 center subgrade 115.3 10.0 100 98 006-15 1A Re-test of #1 above subgrade 116.0 10.B 100 98 006-15 3 northwest corner subgrade 115.3 13.6 100 98 006-15 4 northeast corner of garage subgrade 11 3.2 13.7 99 98 006-15 Proctor Sample Reference: lab No . Method Description Max. Dry Opt. Dens. pcf Moist.(%) 006-15 ASTMD698 Sandy Silt with Gravel 114.9 12.3 ''-ltUORT PRESEHlSut"1111011$.ASA RUULT OFOVR CBSt:R\'AT~H.Lf'\ACEMENT WE HIWli R,.......,.,.. '""' --· .....,..-.1--· ,,.~...:iN'f'LYl!INniEREC COMPACTlllE EFFORT AtlD MOISTURE TO FU DURING 1'He TIMES WHEN OUR 08Sl1NtR IS NOT OBSEIMHG OPERATIOHS THE NUCLEAR DEH$0MU!R MEntOD Of liSTIHC WAS USEO IH SU9STAHTIAL ~CORDAHCE WITH ASn.11 D Sl8 Distribution: Aspen Signature Homes of lronbrldge, LLC ~:n;@pb!!dlnd Sllfch Constn.lctlon -Hayden Horsford tbhorafor Slllch CcnstructJon -John SIHch Uoh!!llhllctwx1ulbpdfon..cqnl SlllchConstn.1ctlon-Sc:oUHenrtks•n ~ Slllch Construc:tlon -Amanda Jenklns ·=w Ajf Paul Weiser Steven L Pawlak, P.E. Field Technician Reviewed By ~c!rtech 6020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 HEPWORTH· PAWLAK GEOTECHNtCAL Fax: 970-945-8454 hpqeo@hpqeolech.com REINFORCEMENT STEEL INSPECTION REPORT Client: Silich Construction Inc. Attn: Scott Henriksen 303 AABC, Suite J Aspen, Colorado 81611 Job No.: 115 0661 Day: Date: Page: Friday 3/4/16 1 of 1 Project: Proposed Residence, Lot 269, lronbridge Development, 25 Eagle Claw Circle, Garfield County, Colorado Area of Inspection: Foundation Grade Beams Reference Documents Graff Engineering Drawings Dated 10/29/14, Sheets FD1 and FD1.0 Used: Inspection Notes: Two #4 bars were in place on 3" concrete chairs at base of grade beams per plans. Radon barrior sheeting and exterior grade beam foam board insulation was also noted to be in place per plans. Inspection Status: 0 Preliminary [EJ Final 18J Concrete reinforcement as noted above was judged to be in reasonable conformance with the referenced construction documents. 0 Exceptions Noted: Verbal Communication: Distribution : Brunner Concrete crew on site was informed of our inspection. Aspen Signature Homes or Iron bridge, LLC -Uwyd Eccles tone UtcC)ntmeQpb!Mf.ntt) Slllch Construction -John Sllich i(fohnedtch:--· Sllich Construction-Scott Henriksen~ ... _ ...... ~~~~~..--- Sillch Construction -Amanda Jenkins l lmf~l Thomas J. Westhoff, CET Steven L. Pawlak, P .E. Field Technician Reviewed By UM ~ech 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 HEPWORTH · PAWLAK GEOTECHNICAL Fax: 970-945-8454 hpqao@hDaeotsCh.com REINFORCEMENT STEEL INSPECTION REPORT Client: Silich Construction Inc. Attn: Scott Henriksen 303 AABC, Suite J Aspen, Colorado 81611 Job No.: 115 0 661 Day: Date: Page: Monday 3/7/16 1 of 1 Pr oject: Proposed Residence, Lot 269, lronbridge De v elopment, 25 Eag1e Claw Circ1e, Garfield County, Colorado Area of Inspection: Slab Reinforci ng and Post-Tensioned Cables Reference Documents Graf E n g i neering D r awings Dated 10/29/14, Sheets FD1 and FD1 .0 Used: In spection Notes : Inspectio n Status : 0 Pr el iminary D Final D Concrete rein forc ement as noted above w as judge d t o be in reasonable confo rm ance wi th the referenced construction documents. @ Ex cept ions Noted: Verba l Com municati on : Dis tributio n· Cable #15b was 4' 1 O" s h ort at south end. Nathaniel G raf was n otified and Contract o r was direct ed to repl ace w i th c o r rect l ength cable. Scott Henriksen and Ray w i th Silich, and Nathan1el Graf w i th Graf Engineering were i nformed. Paul W eiser with HP Geotech was d i r ected to v eri fy t he C abl e 15b r epla c ement prior to concrete pour on 3/8/1 6. Aspen Signatu re Hom es of lro nbrldge, LLC • Llwyd Ecclostone ff ecclntoneQpblbfl.net) Slllch ConstrucUon -John Slllch UohnfttllfchconslnJctJon.cqmJ Slllch Construction -Scott Hen riksen (tcott@!lllchhomu.com) Sllich Construction -Am anda Jenkins l tmandfOslllcbconstrucVon.c om) Fuhrmann & Graf -Nathaniel Graf (PP9£!f0fuhrrnannenglnn•h!Q.Com) T.1NI Tho mas J. Westhoff, CET Steven L . Pawlak, P .E. Fie ld Techn ician Reviewed By ~tech HEPWORTH -PAWLAK GEOTECHNICAL 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 Fax: 970 -945-8454 hpgeo@hpgootech.com CONCRETE TEST REPORT Silich Construction Inc. Attn: Scott Henriksen 303 AABC, Suite J Aspen, Colorado 81611 Job No. 115 0661 Dale Cast: 03-08-16 Sheet: 1 of 1 Project: Proposed Residence, Lot 269, lronbridge Development, 25 Eagle Claw Circle, Garfield County, Colorado Placement Location: Post-Tensioned Slab and Grade Beams Supplier: United Truck No: 6373 Ticket No: 33306515 Mix Design : 37010551 Class D Method of Placement: Pump Time Sampled : Air Temp : 9:10 am 34° Time Batched: Time Arrived : Time Placed: Wet Unit Wt: Slump: 8:25 am 8:57 am 9:04 am Load Size (Yds): 10 Yds Delivered : 40 Yds Ordered : 100 Truck Discharge Typical Specifications : Concrete Temp: 61° Air Content : Sample Point: 139.0 pcf 3% inches 6.4% Air Contenl: 5to 8 % Water Added : 5 gallons Communication: The Contractor and Supplier were Informed of our field test results. Time Cylinders Cast: 9 :20 am In itial Cure Time On Sile: 1 day Field Storage: Insulated Cure Box Date in Lab: 03-09-16 Cylinder Temperature at Pick Up: 51° Min/Max: 50°/71° Compressive Strength Data 2015 Compressive 28 Day Lab Age Dale Load Diameter Area Strength (psi } Number Days lbs. in. in2 Avg. (psi) 150A 3 03-11-16 51,200 4.01 12.63 4050 1508 7 03-15-16 63,200 4.01 12.63 5000 150C 28 04-05-16 74,800 4.01 12.63 5920 1500 28 04-05-16 70,700 4.01 r 12.63 5600 5810 150E 28 04-05-16 74,500 4.01 12.63 5900 Specified Strength for Structure: 4000 psi at 28 days Specified Strength for Mix: 4500 psi at 28 days Notes: Distribution: Aspen Signature Homes of Iron bridge, LLC • Llwyd Eccles tone (lecclestone@pblhfl.net) Sllich Construction -John Sillch Oohn@silichconstructlon.com) Sillch Construction -Scott Henriksen (scott@silichhomes.com) Silich Construction. Amanda Jenkins (amanda@slllchconstruction.com) United Companies Distribution List /l jf Paul Weiser Field Technician Thomas J. Westhoff, CET Reviewed By c&;tech HEPWORTH-PAWLAK GEOTECHNICAL POST TENSIONING FIELD REPORT Client: Silich Construction Inc. Attn: Scott Henriksen 303 AABC, Suite J Aspen, Colorado 81611 Job No.: 115 0661 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 Fax: 970.945-8454 hpgeo@hpgeotech.com Day: Date : Page: Friday 3/11/16 1of2 Project: Proposed Residence, Lot 269, Iron bridge Deve l opment, 25 Eagle Claw Circl e, Garfield County, Colorado Weather: Partly cloudy, It. wind, dry Temperature: 65°F at 1:00 pm F ield Notes: Cable tensioning had been performed using Jack# 539 by K&G Rebar. Due to scheduling conflict, we were unable to observe tensloning in progress. We were shown photo of tensioning with representative jack gauge reading. We measured cable elongation using marks left on cables by crew. Location Jacking Gauge Ca lculated Elonaalion (in.) T endon Force Read ing Length No. West Si de (ft.) Min. Cab les (kips) (psi ) A1 North End 27 5400 17~ 1Y. A NWCor. Hse. 27 5400 32 Y. 2% B WSide Hse. 27 5400 32% 2% c WSide Hse. 27 5400 32% 2% D WSide Hse. 27 5400 32 % 2% E WSide Hse . 27 5400 32% 2% F WSide Hse. 27 5400 32% 2% G WSide Hse. 27 5400 32% 2% H WSide Hse. 27 5400 32Y. 2% I WSide Hse. 27 5400 30% 2Ya J WSlde Hse. 27 5400 30% 2% K WSide Hse. 27 5400 30% 2Ya l NWCor. Gar. 27 5400 50% 3% M W . Side Gar. 27 5400 50% 3% N W . Side Gar. 27 5400 50% 3% 0 W . Side Gar. 27 5400 50% 3% p W . S ide Gar. 27 5400 50% 3% a W . Side Gar. 27 5400 42 Yz 3 R SWCor. Gar. 27 5400 31 % 2 % s South End 27 5400 11 % Dist ribution · Aspen Signature Homes of lronbridge, LLC -Llwyd Eccles tone Uecc1e9toneOoblbft.net> Slllch Construction -Scott Henriksen (tc0tt@t!llcbcanttruet1on.coml Slllch Construction -John Slllch (loh!JOtlHchc;onstlucrtJon.cqm) Sllich Construction -Amanda Jenkins CamamleCl?rJHchcon!tnJctlon.com l Fuhnnann & Graf -Nathaniel Graf fnpqr;sfOfyhm!anntnqlnnrtnq,com> Max. 1% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 4% 4% 4% 4% 4% 3% 2% 1Ye Measu red Elongation (in.) 1% 2% 2% 2Yz 2Yz 2Yz 2Ya 2Ya 2Yz 2% 2% 2% 4% 4% 4% 3Ye 3% 3% 2Ya % TJWi Thomas J . Westhoff, CET Steven L . Pawlak. P.E. Field Technician Reviewed By .. <?~tech HEPWORTH· PAWLAK GEOTECHNICAL POST TENSIONING FIELD REPORT Client: Slllch Construction Inc. Job No.: 115 0661 Attn: Scott Henriksen 303 AABC, Suite J Aspen, Colorado 81611 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 Fax: 970.945-8454 hpgeo@hpgeotech.com Day: Date: Page: Friday 3/11/16 2of2 Project: Proposed Residence, Lot 269, lronbridge Development, 25 Eagle Claw Circle, Garfield County, Colorado Weather: Partly cloudy, Jt. wind, dry Temperature: 65°F at 1:00 pm Field Notes · Cable #15b length shown on plans was 25Ya feet Actual measured length was 33 feet. Minimum and maximum elongation shown below for Cable 15b was calculated based on 33 foot length. Location Jacking Gauge Calculated Elongation (in ) Length Tendon Force Reading No . North Side (ft.) Min . Cables (kips) (psi) 1 NWCor. Gar. 27 5400 23% 1% 2 N. Side Gar. 27 S400 23% 1% 3 N. Side Gar. 27 5400 23% 1% 4 N. Side Gar. 27 5400 23% 1% 5 NE Cor. Gar. 27 S400 23% 1% 6 NWCor. Hse . 27 5400 68% 4Va 7 N. Side Hse. 27 5400 68% 4% 8 N. Side Hse. 27 5400 68% 4% 9 N. Side Hse. 27 S400 68% 4% 10 N. Side Hse. 27 5400 63 4Yz 11b N. Side Hse . 27 5400 65 4% 12b N. Side Hse. 27 5400 65 4% 13b N. Side Hse. 27 5400 60% 4% 14b N. Side Gar. 27 5400 60% 4% 1Sb NE Cor. Hse . 27 5400 33 2% Oistnbulion Aspen Signature Homes of lronbrldge, LLC • Llwyd Ecclastone Oecc:!ntoneftpblhft.petl Slllch Construction -Scott Henriksen r1cgttCb!l ldlcon!tNctlon.c;omt Sillch Construction -John Sllich «l9bnOIJ!k:hconttnlctfon.com> Sillch ConstrucUon ·Amanda Jenkins <tmtndt0tllld!conttructfon.com1 Fuhnnann & Graf· Nathaniel Graf (npqrtf0fubrm1009ngtneertna .com> TJW/ Max. 2% 2% 2% 2Y. 2% 6 6 6 6 5Yz 5% 5% S% So/a 3 Measured Elongation (in .) 1% 1% 1% 1% 1% 5% 5% 5% 5% So/a S% 5% SY. SY. 2% Thomas J. Westhoff, CET Steven L. Pawlak, P.E. Field Technician Reviewed By