12-12-2022 Council Packet - Laserfiche WebLink

Home Browse Search

City of Orono – Orono Public Works Facility, Orono, MN AET Proposal No. P-0012042 September 15, 2022 Page 4 of 10 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 personnel at the site. 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 100 cubic yards (or fraction thereof) of each type of concrete placed each day. Each set will consist of five cylinders; one which will be tested after 7 days and three which will be tested after 28 days. The fifth cylinder will be held in reserve for future testing, if required. 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 25 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. We estimate 10 trips will be required by an ACI certified Engineering Technician I for testing of non-reinforced concrete elements. Floor Flatness Testing The project specifications require that a testing laboratory perform floor flatness/levelness testing within 72 hours of each floor slab placement. These services will be performed by an experienced Engineering Assistant. The field testing will be completed in accordance with ASTM: E1155, “Standard Test Method of Determining Floor Flatness and Levelness Using the F-number System.” Our flatness/levelness testing will be performed using a Face Model 2272 dipstick. We assume that we will have complete access to the slab surface for this testing; i.e., no curing blankets, equipment or materials will be present or stored on the slab. We estimate 2 trips will be required to the project site for these services. 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.