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HomeMy WebLinkAbout600 Buckingham St - Special Inspections/Engineering - 02/28/2007February 28, 2007 New Belgium Brewing Co 500 Linden Street Fort Collins, CO 80524 Attn: Mr. Scott Lyon Irerracon Consulting Engineers & Scientists 301 North Howes Fort Collins, Colorado 80521 Phone 970.484.0359 Fax 970.484.0454 www.terracon.com Re: Construction Materials Compliance Summary New Belgium Brewing Packaging Hall (Services through February 23, 2007) 500 Linden Street (yap �fcc(u'v►�jGLa�-�„. Fort Collins, Colorado Project No. 20061057 Dear Mr. Lyon: Earthwork At your request, we reviewed the earthwork materials placed and monitored during construction activities by Terracon on an "as requested" basis. Our services on the project building have included performing laboratory testing of the soils for suitability to the project specifications and the Geotechnical Engineering Report recommendations performed by Terracon (Project No. 20055077; dated May 18 2005.). Terracon also performed in -place field density testing during placement of the fill to check maximum density and moisture control with one exception; test No. 62 of which is on the building exterior in a rock mulch/detention area. 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 183 in -place moisture-density/compaction tests for the building and parking lot site subgrade and fill 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 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. Delivering Success for Clients and Employees Since 1965 More Than 80 Offices Nationwide New Belgium Brewing Packaging Hall 1rerraran Compliance Summary Project No. 20061057 Page 2 Hot Mix Asphalt (HMA) Paving Seven (7) samples of HMA were obtained for bitumen content and gradation to check conformance to the submitted mix design job mix formula during paving operations with test results within the mix design job mix formula tolerances provided to Terracon as reference for asphalt content and gradation. One sample was outside of the job mix tolerances for gradation and asphalt content on the fine/high side (Report No. 20061057.0168). In addition, 60 in -place density tests were performed to determine relative compaction by the nuclear method. The density tests were within the 92 - 96% requirement. A core versus nuclear correlation test was not performed and typically the core test results will result in a higher test value. All test results are within typical construction tolerances for projects of similar size and scope. Concrete The Portland cement concrete placed and tested on -site consisted of 57 tests for physical property and compressive strength tests of screw pile caps, floor slab, retaining wall, site work and loading dock slab. The reports indicate the specified minimum compressive strength requirements for the project have been achieved with the exception of set Nos. 50-57 of which are awaiting 28-day test results. It is recommended that the project structural engineer review the observation reports for acceptance as meeting the project criteria. Reinforcing Steel Terracon provided reinforcing steel placement observation 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 review the observation reports for acceptance as meeting the project criteria. Structural Steel & Fireproofing Inspex ndt. provided the structural steel/weld site construction and fireproofing operations observation. Observations were provided to on -site personnel at the time of the visit with a written report as documentation. The observation report 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 observation of the screw pile foundation(s) and open -hole excavations as requested during construction. A summary of the observations and structural review response items were provided in written reports upon completion. Per Terracon's geotechnical report and observations performed, screw piles have been placed in general accordance with the plans New Belgium Brewing Packaging Hall Compliance Summary Project No. 20061057 Page 3 lrerraron and specifications and were placed on the anticipated bearing material identified in our geotechnical report. This report has been prepared for the exclusive use of providing test data and observations to document the foundation installation, earthwork, HMA paving, concrete, structural steel, fireproofing and foundation 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. 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 / (� I' (N4_ Mike L. Walker, CET Manager of Construction Services Enc/Copies to: (2) Addressee David A. Ric' Geotechnical A. N Manager (1) Peak Engineering Inc (1) North Star Design (1) Swinerton Builders — on -site (1) Ware Malcomb (1) City of Fort Collins Building Dept. via Swinterton on -site