Agenda - Council - 04/25/2023 - Laserfiche WebLink

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City of Ramsey — Ramsey Water Treatment Plant AET Proposal No. P-0021454 April 10, 2023 Page 4 of 8 ENGINEERING rEstiNG During placement of the concrete, our Engineering Technician II will also cast test cylinders for compressive strength testing. Project specifications require that one set of cylinders be cast for every 50 cubic yards (or fraction thereof) of each type of concrete placed each day. Each set will consist of four cylinders; one which will be tested after 7 days and three which will be tested after 28 days. Extra cylinders can be cast at your request. AET will also pick up the cylinders from the site and return them to our laboratory for moist curing and testing. The results of our compressive strength tests will be presented periodically, as they become available. We estimate 42 trips will be required by the Engineering Technician II to complete the reinforcing steel observation and concrete testing services for reinforced concrete portions of the new construction. Masonry Observations and Testing During construction, AET personnel will perform observations during masonry wall construction, as well as testing of mortar and grout (if required). Our observations and testing will be performed by an experienced Engineering Technician II on an on -call basis, and will include the following services: • Observe that the proper size units are used. • Observe that the units are clean, sound and dry when placed. • Observe that the masonry bearing surfaces are clean. • Observe the placement and alignment of vertical reinforcing bars and dowels, and document that the correct sizes of bars are used. • Observe the placement and alignment of horizontal reinforcing bars, and document that the correct sizes of bars are used. • Observe that the correct lengths of bar lap splices are provided. • Observe that the proper clearance is provided between the bars and the masonry units. • Observe the general construction practices, including compliance with proper cold or hot weather protection as required by the project specifications. We estimate that our Engineering Technician II will make 6 trips to conduct these observation and testing services. Any discrepancies from the project specifications will be brought to the attention of the contractor and/or their subcontractor. Daily field reports of our observations and testing will be available to the contractor and other authorized site personnel. While at the site the Engineering Technician II will also sample the grout. The grout "prism" specimens will be cast for compressive strength testing according to IBC guidelines. One set of four grout "prisms" will be cast according to the testing frequency required by the project specifications. One of the "prisms" will be tested for compressive