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Home My WebLink AboutConstruction Observation & Testing Completion Letter 09.30.2015GeorteCh HEPWORTH-PAWLAK GEOTECHNICAL September 30, 2015 Silich Construction Inc. Attn: Hayden Horsford 303 AABC, Suite .1 Aspen, Colorado 81611 (hhors ford @silichconstrustion.corn) Hepworth Pawl tk Gtotcchntcnl, Inc 5020 Countl Ruud 154 Glenwood Springs, Colorado S 1601 Phone 970 945.799.5 Fax: 970.945 8454 em,ril:lapg ,0hpg.utech.cum Job No. 115 066E Subject: Construction Observation and Testing Completion Letter, Proposed Residence, Lot 257, Ironbridge Development, 203 River Vista Way, Garfield County, Colorado 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 performed for the project are attached. We previously conducted a subsoil study for design of foundations at the site and presented our findings in a report dated May 13, 2015, Job No. 113471K. The foundation bearing soils within the building excavation were observed and tested for compaction on July 27, 2015 and are suitable for the recommended bearing pressure of 1,500 psf. The post -tensioned slab tendons and grade beam reinforcement were observed on August 10, the fresh concrete for the post -tensioned slab was sampled on August 10 and tensioning of the tendons was observed on August 14, 2015 according to the project specifications. The results of the tendon tensioning were submitted to Fuhrmann & Graf 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 303-841-7119 • Colorado Springs 719.633-5562 • Silverrhorne 970-468-1989 Silich Construction Inc. September 30, 2015 Page 2 observation and testing of very limited amount of the overall work to evaluate the construction compliance. If you have any questions or need further assistance, please call our office. Sincerely, HEPWORTH — PAWLAK GEOTCHNICAL, INC. Steven L. Pawlak, P.E. SLP/ksw Attachments: Observation & Testing Reports: 7/27/2015 through 8/14/15 cc: Silich Construction —John Silich (iohz @silichconstruction.c' n}) Silich Construction — Eric Lintjer (elintjer@silichhomes.com) Joh No 115 066E HEPWORTH-PAWLAK GEOTECHNICAL 5020 County Road 164 Glenwood Spdnps, Colorado 81601 Phone: 970-945-7088 Fax: 970.9458454 Earthwork Compaction Testing Report Client: Silich Construction Inc. Job No.: 115 066E Day: Monday Attn: Hayden Horsford Date: 7127/15 303 AABC, Suite J Page: 1 of 1 Aspen, Colorado 81611 Project: Propose Residence, Lot 257, Ironbridge Development, 203 River Vista Way, Garfield County, Weather. Partly cloudy, light wind, dry Earthwork Contractor. Temperature: 84° at 11:30 am Equipment Used: Remote double drum roller, mini hoe, dump truck Description of Earthwork Building pad underground plumbing was installed and backfilled and Tested: foundation slab subgrade had been stripped and compacted. Grade beam trenches were laid out and starting to be excavated. We performed four compaction tests in the slab subgrade. Tests indicated 98 to 99 percent compaction at about 2 to 4 percent below optimum moisture. Proctor value referenced was used on the adjacent Lot 258. Verbal Communication: None Placement and Compaction Procedure: Not observed by HP Geotech. Lift Thickness: Compactor(s) Used: Max. Rock Size: Moisture Conditioning: Number of Passes: Nuclear uauge Moistureloensity Test Results Test No. Location gElev. Building pad slab subgrade Depth or Field Dry Density (Pd) Field Moisture Content % Field Comp. (%) Min. Comp. Req.Lab (%) Proctor No. 1 7' W, 10' S of NE building corner slab subgrade 123.8 6.9 99 98 Y88_1 2 15' N, 12' W of SE building corner slab subgrade 122.0 8.0 98 98 288-1 3 6' N, 6' E of SW building corner subgrbade 122.2 6.9 98 98 288-1 4 12' S, 4' E of NW building comer subgrade 121.7 6.2 98 98 288-1 Proctor Samnle Reference" Lab No. Method Description Max. Dry _ Dens. pcf Opt. Moist. (%) Silty sand with gravel 124.5 10.2 THIS REPORT PRESEMS OPINIONS AS A RESULT OF OUR OBSERVATIUNSOF FILL PLACEMENT WE HAVE RELIED ON THE CONTRACTOR TO CONTINUE APPLYING THE RECOMMENDED COMPACTIVE EFFORT AND MOISTURE TO ALL DURING THE TWES WHEN OUR OBSERVER IS NOT OBSERVING OPERATIONS THE NUCLEAR DENSOMETER METHOD OF TESTING WAS USED IN SUBSTANTIAL ACCORDANCE wmi ASTM 0 3933 Distribution: Aspen Signature Homes of Ironbridge, LLC - Llwyd Ecclestone (lecctostoneaublhfLnett Slltch Construction -- Hayden Horsford HorsfordrftLuIgnieratkentibstansAmnii Stitch Construction - John Silich fickinvachcionitn on.corn1 Stitch Construction - Jodi Thlmsen ! Loth! sillchconstrucdo n.C94n 288-1 TJWI ASTM D 698 Thomas J. Westhoff, CET Steven L. Pawlak, P.E. Field Technician Reviewed By G&ech HEPWORTH - PAWLAK GEOTECHNICAL 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945 7988 Fant 970.945-8454 hpaeo@hpgeotech.som REINFORCEMENT STEEL INSPECTION REPORT Client: Silich Construction Inc. Job No.: 115 066E Day: Monday Attn: Hayden Horsford Date: 8110115 303 AABC, Suite J Page: 1 of 1 Aspen, Colorado 81611 Project: Proposed Residence, Lot 257, Ironbridge Development, 203 River Vista Way, Garfield County, Colorado Area of Inspection: Post Tension Slab and Grade Beams Reference Documents Structural Plans Used: Sheets FD -1 Inspection Notes: Inspection Status: 0 Preliminary Final El Concrete reinforcement as noted above was judged to be in reasonable conformance with the referenced construction documents. 0 Exceptions Noted: Verbal Communication: Distribution: Aspen Signature Homes of Ironbridge. LLC - Llwyd Ecclestone (Iecclestonenotahfl.nvt) Stitch Construction— Hayden Horsford ttit greford sllichconstruction.Com) Sikh Construction—John Siiich lichnnitnconttruct]on.cont] Paul Weiser Steven L. Pawlak, P.E. Field Technician Reviewed By njt G&ech 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-94549N Fax: 970.9454454 HEPWORTH-PAWLAK GEOTECHNICAL hpgeofthpgeotech.com CONCRETE TEST REPORT Silich Construction Inc. Attn: Hayden Horsford 303 AABC, Suite J Aspen, Colorado 81611 Job No. 115 066E Date Cast: 08-10-15 Sheet: 1 of 1 Project: Proposed Residence, Lot 257, Ironbridge Development, 203 River Vista, Garfield County, Colorado Placement Location: Post Tensioned Slab Supplier: United Truck No: 0000 Ticket No: 33305084 Mix Design: 37010550 Method of Placement: Pump Time Sampled: 8:10 am Air Temp: 62° Concrete Temp: 69° Water Added: None Communication: Time Batched: Time Arrived: Time Placed: 7:08 pm 7:50 pm 8:00 pm Sample Point: Wet Unit Wt 140.6 pcf Slump: 4'/% inches Air Content: 5.1 Load Size (Yds): 10 Yds Delivered: 10 Yds Ordered: 100 Truck Discharge Swifications: Slump: 4 to 6 inches Air Content: 3 to 8 The Contractor and Supplier were informed of our field test results. Time Cylinders Cast: 8:20 am Initial Cure Time On Site* 1 day Field Storage. Water bath Date in Lab* 08-11-15 Cylinder Temperature at Pick Up. 80° Min/Max: 69°184° Notes: Distribution Aspen Signature Homes of Ironbridge, LLC - Llwyd Ecclestone fIREOgigmagb.L.Adhfl Slfich Construction—Hayden Horsford (WI crk# api hcanstrusll+n, ;1] Sillch Construction —John Sllich Cehni lichconstruc#on.com) Sillch Construction —Jodi Thimsen (lc 'Irl ti) United —Holly Martin IHolly.msr s # rlelo.cim) United - Misty Grosse (Mlstv.I taiait d-of>com) lljf Paul Weiser Field Technician Thomas J. Westhoff, CET Reviewed By Compressive Strength Data 2015 Lab Number Age Days Date Load lbs. Diameter in. Area int Comressive p Strength (psi) 28 Day Avg. (psi) 577A 4 08-14-15 54,200 4.01 12.63 4290 6500 577B 7 08-17-15 60,600 4.01 r 12.63 4800 577C 29 09-08-15 82,000 4.01 12.63 6490 577D 29 09-08-15 82,200 4.01 12.63 6510 577E Hold/56 Discarded 1 Specified Strength for Structure: 4500 psi at 28 days Specified Strenath for Mix: 4500 nsi at 2B clays Notes: Distribution Aspen Signature Homes of Ironbridge, LLC - Llwyd Ecclestone fIREOgigmagb.L.Adhfl Slfich Construction—Hayden Horsford (WI crk# api hcanstrusll+n, ;1] Sillch Construction —John Sllich Cehni lichconstruc#on.com) Sillch Construction —Jodi Thimsen (lc 'Irl ti) United —Holly Martin IHolly.msr s # rlelo.cim) United - Misty Grosse (Mlstv.I taiait d-of>com) lljf Paul Weiser Field Technician Thomas J. Westhoff, CET Reviewed By 11-IP 5020 County Road 154 Glenwood Springs, CO 81601 Geotech Phone: 970-945-7988 Fax: 970.945.8454 HEPWOR'rH-PAWLAK GEOTECHNICAL hpgeo@hpgeotech.com POST TENSIONING FIELD REPORT Client: Silich Construction Inc. Attn: Hayden Horsford 303 AABC, Suite J Aspen, Colorado 81611 Job No.: 115 066E Day: Friday Date: 8114/15 Page: 1 of 2 Project: Proposed Residence, Lot 257, Ironbridge Development, 203 River Vista, Garfield County, Colorado Weather: Clear, calm, dry Temperature: 65°F at 8:30 am Field Notes: Cable tensioning was performed using Jack #539 by K&G Rebar, starting at the stab southwest corner and progressing to the slab northeast corner. Tendon No.Force Location Jacking (kips) Gauge Reading (psi) Length 00 Calculated Elongation (In.) Measured Elongation (in.) Min. Max. AO SW Corner 27 5400 13% % 1% % Al West Side 27 5400 13% Y. 1% % A2 West Side 27 5400 13% % 1% 1% A West Side 27 5400 40 2% 3% 3% B West Side 27 5400 40 2% 3% 3% C West Side 27 5400 40 2% 31,4 3% D West Side 27 5400 40 2% 3% 3% E West Side 27 5400 40 2Y. 3% 3% F West Side 27 5400 40 2% 31/2 3% G West Side 27 5400 40 2% 31/2 3% H West Side 27 5400 40 2% 3% 3% 1 West Side 27 5400 40 2% 3% 3% J West Side 27 5400 40 2% 3% 3% K West Side 27 5400 31% 2% 2% 2% L West Side 27 5400 31% 2% 2% 2% M NW Corner 27 5400 23h 1% 2'/. 2 Distribution: Aspen Signature Homes of Ironbridge, LLC -Llwyd Ecclestone lie ccissionu pbfhfl.rut SIIIch Construction -- Hayden Horsford ihIlo or ill ilc+ nstructfon.vom) Sllich Construction—John Silich tiohnesilIchcor truction.com) Silich Construction—Jodi Thlmsen (to !Mai licl,con:tructton&4m) Fuhrmann & Graf— Nathaniel Graf (noorsferuhnumenoineerina,comy TJWI Thomas J. Westhoff, CET Steven L. Pawlak, P.E. Field Technician Reviewed By HEPWORTH-PAWLAK GEOTECHNICAL POST TENSIONING FIELD REPORT Client: Silich Construction Inc. Attn: Hayden Horsford 303 AABC, Suite J Aspen, Colorado 81611 5020 County Road 154 Glenwood Springs, CO 81601 Phone: 970-945-7988 Fax: 970.945-8454 hpgeofthpgeotach.com Job No.: 115 066E Day: Friday Date: 8114115 Page: 2 of 2 Project Proposed Residence, Lot 257, Ironbridge Development, 203 River Vista, Garfield County, Colorado Weather: Clear, calm, dry Field Notes: Temperature: 65°F at 8:30 am Tendon No. _ Location Jacking Force (kips). Gauge Reading (psi)9 Length (ft.) Calculated Elongation (in.) Min. Max. Measured Elongation (in.) 1A NW Corner 27 5400 52'% 3' 4%4 2A North Side 27 5400 52/ 33/ 4% 4 3A North Side 27 5400 521/2 3% 46/63/ 4A North Side 27 5400 52/ 3% 4% __.. 4'/. 5A North Side 27 5400 52% 3' 4% 3% 6 North Side 27 5400 42'/ 3 33/ 3 7 North Side 27 5400 42'/ 3 3% 3 8 North Side 27 5400 42'/ 3 3% 3% 9 North Side 27 5400 41 2% 3% 3%, 10 North Side 27 5400 41 2% 3a/ 3 11 North Side 27 5400 _ 33% 2%_ 3 2% 12 North Side 27 5400 33 6 2/a 3 2% 13 NE Corner 27 5400 33% 2% 3 3% Distribution. Aspen Signature Homes of Ironbridge, LLC - Liwyd Ecclestone (lecclestonefltoblhfl.netl Siilch Construction— Hayden Horsford (hiarsr rs3lichcnnstticn.eami Sikh Construction—John Sllich oh illoli� n coon. Stitch Construction — Jodi Thimsen IfvdlBDstlichcons ,corp) Fuhrmann & Graf— Nathaniel Graf Ingioattghrinannenolneerinq,qomil TJW Thomas J. Westhoff, CET Steven L. Pawlak, P.E. Field Technician Reviewed By