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Home My WebLink About914 W LAKE ST - SPECIAL INSPECTIONS - 9/10/2012November 2, 2011 �6I I ��r o2, -J r� Ram's Crossing at Campus West EARTH ENGINEERING 914 West Lake Street CONSULTANTS, INC. Fort Collins, Colorado 80521 Attn: Chuck and Cheryl Gower Re: Construction Observation and Material Testing Rams Crossing at Campus Remodel - Entryway Additions 914 West Lake Street Fort Collins, Colorado EEC Project No. 1114078 Mr. & Mrs. Gower: As requested by the general contractor, Brinkman Construction, during the period of October 3 through October 15, 2011, Earth Engineering Consultants, Inc. (EEC) personnel provided construction observation and testing services for the referenced project. Those services were provided on a part-time basis and included a foundation excavation observation for the east entryway improvements, reinforcement observations for the footings, stem wall, and pilasters in conjunction with the east entryway structure, and testing of cast -in -place concrete for the referenced project. The results of the observation completed by EEC personnel are included with this report. Foundation Excavation Observation — East Entryway On October 12, 2011, a representative from EEC visited the site to observe foundation bearing materials for the east entryway structure planned for construction at the referenced site. At the time of our site visit, the foundation excavation for the canopy structure footing pads and grade beam adjacent to the existing building, (please refer to the site diagram included herein for reference purposes), had been excavated to approximate foundation bearing elevations. The soil profile noted within the excavation generally consisted of sandy lean clay transitioning to clayey sand. A hand auger boring was completed within the foundation excavation by EEC personnel to a depth of approximately 3 feet below proposed foundation bearing level. Dynamic cone penetrometer testing indicated the cohesive to slightly cohesive subsoils were medium stiff in consistency. The soils observed within the excavations were generally consistent with the assumed "foundation bearing capacity" materials as noted on the approved structural drawings and are capable of supporting the 4396 GREENFIELD DRIVE WINDSOR, COLORADO 80550 (970) 545.3908 FAX (970) 663-0282 Earth Engineering Consultants, Inc. Rams Crossing at Campus Remodel November 2, 2011 Page 2 structure using a net allowable maximum bearing pressure of 1,500 psf. No groundwater was encountered within the base of the excavation. Care should be taken during construction to avoid disturbing the bearing materials. Materials that are loosened or disturbed by the construction activities or materials that become dry and desiccated or wet and softened should be removed and replaced prior to placement of foundation concrete. Foundation Reinforcement Observations and Cast -in -Place Concrete TestiM During the referenced period, EEC personnel conducted site visits on October 12, and 14, 2011, to perform visual observations of the reinforcing steel placed within the east entryway site improvements, (i.e., continuous spread footing alignments, column pad footings, stem walls, and pilasters), prior to placing foundation concrete as indicated herein. A summary of the observations is included with this report. Any discrepancies of reinforcement, if noted on the daily observation report were brought to the attention of the project's construction management consultant, Brinkman Construction, and the reinforcement subcontractor, Red Willow, during the initial site visits and corrections/modifications were addressed accordingly prior to placement of the foundation concrete. Clearances and lap lengths, where applicable, were checked and appeared to meet the minimum requirements. The reinforcement for the portions of the foundation system observed by EEC personnel on the date as noted herein, appeared to be in general accordance with the structural details as presented on project plans and supplemental ASI schematics provided to us by Brinkman Construction. During the referenced period, EEC personnel observed and tested Portland cement concrete delivered to the site for placement within the foundation elements as indicated on the daily reports. Field testing performed on the plastic concrete included slump, air content, and concrete temperature. The ambient air temperature at the time of placement was also recorded. Concrete test cylinders were cast from representative samples for laboratory curing and compressive strength testing. Results of the field and 7-day laboratory compressive strength test results performed during the referenced period are included herein, while the 28-day compressive strength results will be provided under separate cover when the results become available. Earth Engineering Consultants, Inc. Rams Crossing at Campus Remodel November 2, 2011 Page 3 We appreciate the opportunity to work with you on this project. If you have any questions concerning the enclosed information, or if we can be of further service to you in any other way, please do not hesitate to contact us. Very truly yours, Earth Engineering Consultants, Inc. 2T112 L z-JJ David A. Richer, P.E. Senior Geotechnical Engineer cc: Brinkman Construction Mr. Evan Worsley: Evan.Worsley(cbbrinkmanpartners.com Mr. Jim Ciesla: Jim.CieslaObrinkmanpartners.com r4Architects — Mr. Matt Rankin: matt(@r4arch.com Larsen Structural Design — Mr. Blake Larsen, P.E.: blake(cDlarsensd.com EARTH ENGINEERING CONSULTANTS, INC. REINFORCEMENT OBSERVATIONS - QC Period October 3 - October 15, 2011 (914 West Lake Street - RAM'S CROSSING REMODEL) Footing/Pad Schedule Wor Size (Width, Length and Horizontal Reinforcement Vertical Reinforcement Steel / Other Reinforcement 8/or Date Location/Gridline Foundation System Thickness), if Applicable Steel Dowels (as noted) Comments Approximate gridline C-8 to D-8, 10-inches in depth by 16-inches #4 vertical 7-6—hook" dowels with 8" as per detail 2/S2.3 on Sheet continuous footing alignment Continuous Spread footing in width continuous spread two (2) continuous #5 rebar horizontal component into footing, S1.1 and S2.3 of structural adjacent to the existing building - footing along footing alignment alternating every 4-feet on -center drawings see Foundation Plan Exterior column pads at 4-foot by 4-foot square pads by 5 # 5 rebar each -way bottom 8 #4 vertical 2'-6—hook" dowels with 8" as per detail 1/S2.1 and ASI- 10/12/2011 approximate gridlines C-9, C-10, D- Column Footing Pads 10-inches in depth mat horizontal component into footing, 3 per 3 9, and D-10, see Foundation Plan each face ASI No. 3 strip footings at 12-inches in depth by 16-inches #4 vertical 2-6—hook" dowels with 8" as per details 2/S2.3 on approximate gridlines C-9 to C-9.4, Continuous Spread footing in width continuous spread two (2) continuous #5 rebar horizontal component into footing, Sheet S1.1 and S2.3 of and D-9 to D-9.4, see foundation footing along footing alignment alternating every 4-feet on -center structural drawings and ASI-3 plan Pilasters at C-9, C-10, D-9, and D- 22 - 8" square 16-inches in Each pilaster reinforced with eight (8) #4 vertical rebar from footing pad Pilasters width by approximately 3- and #4 horizontals ties at 12-inches on -center, with 2 #4 ties at top 3- as per detail 1/S2.1 10, see Foundation Plan feetinheight inches 10/14/2011 Foundation walls for continuous 2#4 rebar top and bottom and as per detail 2/S2.3 on Sheet spread footing alignments, see foundation stem walls 8-inches in width #4 rebar 12-inches on -center #4 rebar 12-inches on -center S1.1 and S2.3 of structural Foundation Plan full -height drawings EEC Client: Chuck and Cheryl Gowler c/o Ram's Crossing at Campus West Project: Ram's Crossing - Entryway Remodel Improvements Location: 914 West Lake Street - Fort Collins, Colorado EEC Project No. 1114078 Sheet No. 1 . c, Earth Engineering Consultants, Inc. Report of Cast -in -Place Concrete Tests GENERAL INFORMATION Placement Date: 10/12/2011 Test Set Number: 1 Placement Location: Footings - E of Door, SE Side of Buildin Concrete Supplier: Lafarge Type of Placement: Hand Ticket Number: 75144569 Truck Number: 4780209 Mix Code: RMXCE30DC5J Water Added on Site: None Batch Time: 2:38 PM Sample Time: 3:10 PM Yards: 3.5 of 3.5 Required 28 Day Compressive Strength (psi): 3000 EEC Technician: JE Comments: FIELD TEST DATA TEST RESULTS SPECIFICATIONS Slump (inches) ASTM C-143 4" Air Content (%) ASTM C-231 6.3% Unit Weight (pcf) Laboratory Concrete Temperature (deg F) ASTM C-1064 _'• 700 90°Max Air Temperature at Placement (de F) 78° Comments: 11 :1 COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C-39/C-31) Specimen Number Date Tested Age (Days) Maximum Applied Load founds Area inZ Failure Type Compressive Stren th si) Average Compressive Strength (psi) 1 B 10/19/11 7 46740 12.57 Shear 3720 3720 Project: Ram's Crossing - Entryway/Remodel of Existing Building Project Number: 1114078 Report Distribution: Ram's Crossing: Chuck & Cheryl Gowler Brinkman Construction: Evan.Worsley@brinkmanpartners.com Jim.Ciesla@brinkmanpartners.com r4Architects — Mr. Matt Rankin: matt@r4arch.com Larsen Structural Design: blake@larsensd.com bernie.lucero@lafarge-na.com gary.wood@lafarge-na.com alan.jones@lafarge-na.com Earth Engineering Consultants, Inc. Report of Cast -in -Place Concrete Tests GENERAL INFORMATION Placement Date: 10/14/2011 Test Set Number: 2 Placement Location: Footing - Directly E of E Entryway Concrete Supplier: Lafarge Type of Placement: Hand Ticket Number: 75144655 Truck Number: 4780304 Mix Code: RMXGE40DC5W Water Added on Site: None Batch Time: 2:56 PM Sample Time: 3:40 PM Yards: 5 of 5 Required 28 Day Compressive Strength (psi): 3000 EEC Technician: KRS Comments: 11 FIELD TEST DATA TEST RESULTS SPECIFICATIONS Slump (inches) ASTM C-143 5.5" Air Content (%) ASTM 0-231 _ _ 7.2% Unit Weight (pcf) Laboratory Concrete Temperature (deg F) ASTM C-1064 _ 650 90°Max Air Temperature at Placement (deg F) 60° Comments: COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C-39/C-31) Specimen Number Date Tested Age (Days) Maximum Applied Load (pounds) Area (in2)Type Failure Co;thcA St Average Compressive Stren th (psi) 2 B 10/21/11 7 35620 12.57 Shear 2830 2830 Project: Ram's Crossing - Entryway/Remodel of Existing Building Project Number: 1114078 Report Distribution: Ram's Crossing: Chuck & Cheryl Gowler Brinkman Construction: Evan.Worsley@brinkmanpariners.com Jim.Clesla@brinkmanpartners.com MArchitects — Mr. Matt Rankin: matt@r4arch.com Larsen Structural Design: blake@larsensd.com bernie.lucero@lafarge-na.com gary.wood@lafarge-na.com alan.jones@lafarge-na.com