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HomeMy WebLinkAbout1213 Riverside Ave - Special Inspections/Engineering - 02/09/2006/ of3 February 9, 2006 Adolfson & Peterson, Inc. 797 Ventura Street Aurora, Colorado 80011 Attn: Mr. Joey Hardy Re: Construction Materials Compliance Summary FMC Facility Dialysis 1213 Riverside Avenue Fort Collins, Colorado Terracon Project No. 20061008 Dear Mr. Hardy: Soil/Earthwork Irerracon Consulting Engineers & Scientists Terracon Consultants, Inc. 301 North Howes Fort Collins, Colorado 80521 Phone 970.484.0359 Fax 970.484.0454 www.terracon.com ,r3�szss3��/ At your request, we reviewed the results of the earthwork materials placed and monitored in the building foundation areas. Terracon provided the services on an "as requested" basis. Our services on the project site have included performing laboratory testing of the soils for determination of maximum dry unit weight, optimum water content and soil classification. Terracon also performed in -place field density testing during the foundation bearing stratum preparation prior to placement of concrete foundations to check maximum density and moisture control. 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 2 in -place density/compaction tests for the building foundation bearing stratum during construction. The tests at the locations indicated, met the design criteria as provided by Adolfson & Peterson, Inc.. Based upon the limited tests and observations performed, results indicate suitable materials and specified compaction at the locations tested. 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 outside of proposed construction. The foundation type and specific design for each structure will be recommended based on the particular characteristics of the soil type at foundation depth, and on the basis of further evaluations and observations prior to construction. Concrete The Portland cement concrete placed and tested on -site consisted of 1 test for physical property and compressive strength tests for the foundation footings and slab -on -grade (placed monolithic, 1 placement). The report indicates the specified minimum compressive strength requirement (as reported by Adolfson & Peterson, Inc.) has been achieved at the age of 7-days for the project. Delivering Success for Clients and Employees Since 1965 More Than 70 Offices Nationwide C)_0f3 FMC Facility Dialysis lferracon Compliance Summary Project No. 20061008 Page 2 Reinforcing Steel Terracon provided reinforcing steel placement observation of structural concrete placements as requested. The observations performed were observed to be in compliance 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 review the test reports for acceptance as meeting the project criteria. Masonry One grout sample, one mortar sample and one masonry prism assemblage was obtained for compressive strength testing. Test results have met or exceeded the required the client reported minimum strength specified for the project for the grout and are awaiting the 28-day compressive strength results for the mortar and assemblages. It is recommended that the project structural engineer review the test reports for acceptance as meeting the project criteria. Structural Steel Inspex ndt. provided structural steel/weld site construction observation. The observations were performed of structural steel, beam to CMU wall pocket connections, A325 bolt connections and roof deck welding/attachments. Observations were provided to on -site personnel at the time of the visit with a written report as documentation. The observation reports has noted observations as being acceptable per the provided plans. It is recommended that the project structural engineer review the observation reports for acceptance as meeting the project criteria. Foundation Terracon provided in -place density/water content testing of the foundation footing(s) excavations as requested during construction. A summary of the test results were provided in written reports upon completion. Per Adolfson & Peterson, Inc. provided criteria and Terracon test results performed, foundation footings that Terracon tested have been placed in general accordance with the plans and specifications. This report has been prepared for the exclusive use of providing test data and observations to document portions of the earthwork, concrete, masonry, structural steel/weld, and foundation construction 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. FMC Facility Dialysis 1rerracon Compliance Summary Project No. 20061008 Page 3 /�D C� ! _ 3 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. 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, p REG' 1rerraconAN • 2 , Mike L Walker, CET David A. Ri.R,.? Manager of Construction Services GeotechnicaI ept. Mgr. Enc/Copies to: (3) Addressee (1) City of Fort Collins Building Dept. via client