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Home My WebLink About1307 E Prospect Rd - Special Inspections/Engineering - 12/26/2007December 26, 2007 Fort Collins Club 1307 East Prospect Road Fort Collins, Colorado 80525 Attn: Mr. Todd Heenan Re: Construction Materials Compliance Summary Fort Collins Club Expansion 1307 East Prospect Road Fort Collins, Colorado Project No. 20071045 Dear Mr. Heenan: ,� o 7&d 77�3 Irerracon Consulting Engineers & Scientists 301 North Howes Fort Collins, Colorado 80521 Phone 970.484.0359 Fax 970.484.0454 www.terracon.com At your request, we have reviewed the construction materials testing documentation prepared by Terracon during construction phases of the referenced project. Our services on the project have included performing laboratory testing of the soils for compliance with the project specifications and the Supplemental Geotechnical Engineering Report recommendations prepared by Terracon (Project No. 20065070 dated June 1, 2006). Terracon also performed in - place field density testing during placement of the fill to check maximum density and moisture control. We also performed concrete testing, reinforcing steel inspections, foundation excavation observations, masonry testing and observations, and concrete slab vapor emission testing. All testing and observations were performed on an "as requested" basis. Earthwork As recommended in the soils investigation, on -site or approved imported soils were suitable for placement during construction. Laboratory tests indicated fill material tested by Terracon met the recommendations as outlined in the geotechnical report. The results of the field and laboratory testing were forwarded for review. In addition, the on -site superintendent and subcontractors were informed on a daily basis of the test results performed. Terracon performed 50 in -place moisture-density/compaction tests for the foundation backfill, and building and slab -on -grade subgrade placement. The tests at the locations indicated met or ultimately achieved (after retesting) compaction specification requirements. Our test results represent only the materials at the location and time of testing. Terracon did not direct nor control the fill placement and compaction at the site and does not assume responsibility for the placement, compaction or control of the fill materials. Areas of fill which are not representative of our testing may exist, particularly in common fill areas such as slopes or landscaped areas outside the limits of the building pad. The foundation type and specific design for structure will be recommended based on the particular characteristics of the soil type Delivering Success for Clients and Employees Since 1965 More Than 95 Offices Nationwide Compliance Summary Terracon Fort Collins Club Expansion Project No. 20071045 Page 2 at foundation depth, and on the basis of further evaluations and observations prior to construction. Concrete Portland cement concrete was placed on -site for footings, walls, slabs -on -grade, sidewalks, and column pads. Eleven samples were tested for physical properties including slump, air content, unit weight, and compressive strength. The reports indicate the specified minimum compressive strength requirements for the project have been achieved. It is recommended that the project structural engineer review the observation reports for acceptance as meeting the project criteria. Reinforcing Steel Terracon provided observation of steel reinforcement placement in structural concrete placements as requested. The observations were performed per the provided plans and specifications for the project and have been formally reported to the client and designated parties. It is recommended that the project structural engineer of record review the test reports for acceptance as meeting the project criteria. Foundation Terracon performed observations of the foundation system construction as requested during construction activities. A summary of the observations and structural review response items were provided in written reports upon completion. Based on our observations, foundation construction operations were performed in general accordance with the plans and specifications and the spread footing foundations were placed on the anticipated bearing material identified in our geotechnical report. We also observed helical pier installations and recommended that the project structural engineer of record review the test reports for acceptance as meeting the project criteria. Masonry Testing and Observations Five sets of grout samples, five sets of mortar samples, and five sets of masonry assemblages were obtained for compressive strength testing during construction. Test results met or exceeded the required minimum strength specified for the project. In addition, observations of construction procedures and reinforcing steels placed within masonry were performed on an as - requested basis. It is recommended that the project structural engineer of record review the test reports for acceptance as meeting the project criteria. Compliance Summary Fort Collins Club Expansion Project No. 20071045 Page 3 Structural Steel Observation Terracon Inspex ndt. provided structural steel/weld observations. Observation results were provided to on -site personnel at the time of the visit with a written report. The observation reports prepared by Inspex ndt indicate that structural steel/welds are acceptable per the provided plans. It is recommended that the project structural engineer review the observation reports for acceptance as meeting the project criteria. Miscellaneous Observations Vapor emission testing was performed at frequencies selected by our client and were evaluated by the contractor per the provided construction requirements. All observations and/or recommendations were provided in a written report. It is recommended that the project structural engineer and/or architect review the observation reports for acceptance as meeting the project criteria. Closure This report has been prepared for the exclusive use of providing test data and observations to document the earthwork, reinforcing steel, concrete, and structural steel operations conducted for the proposed project. The opinions and conclusions presented have been derived in accordance with generally accepted geotechnical and material engineering practice. No other warranty expressed or implied is made. In the event that there are any changes in the nature or design of the project, the conclusions contained in this report shall not be considered valid unless this firm reviews such changes, and the conclusions of this report are modified or verified in writing. This letter is prepared for the exclusive use and reliance of our client. Use or reliance by any other party is prohibited without the written authorization of our client and Terracon. Reliance on this letter by the client and all authorized parties will be subject to the terms, conditions and limitations stated in the proposal, report and Terracon's Terms and Conditions. The limitation of liability defined in the Terms and Conditions is the aggregate limit of Terracon's liability to the client and all relying parties. Compliance Summary Fort Collins Club Expansion Project No. 20071045 Page 4 y6f� Terracon It has been our pleasure to work with you on this project and to continue providing services during your ongoing construction. Should you have any questions, or need additional information, please contact us at your convenience. Respectfully submitted, Terracon Consultants, Inc. Mike J1keUrCET Manager of Construction Services Copies to: (2) Addressee (1) Drahota Inc. (1) RNF Conultants (1) Vaught Frye Architects, (1) City of Fort Collins c/o Drahota Inc. Raymond L. Denton, II, P'26.1 ' Geotechnical Department Manager