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City of Orono – Orono Public Works Facility, Orono, MN <br />AET Proposal No. P-0012042 <br />September 15, 2022 <br />Page 3 of 10 <br /> <br /> <br />We estimate 6 trips will be required by the Engineering Assistant to complete the <br />observations. We estimate 13 trips will be required by the Engineering Technician II to <br />perform the compaction testing of the fill soils. <br /> <br /> Reinforcing Steel Observations <br />Prior to placement of concrete AET will observe the mild reinforcing steel placed in the <br />formwork for cast-in-place concrete elements for the building. These observations will be <br />performed on an on-call basis by an experienced Engineering Technician II working under <br />the guidance of ICC certified personnel. While at the site, the AET personnel will perform <br />the following services: <br /> <br /> Review the most recent plans and specifications available at the jobsite. <br /> Observe that the correct number, size, alignment, and spacing of the bars are <br />provided for the structural elements observed. <br /> Observe that the reinforcing steel bars are provided with the specified cover from <br />formwork, the ground surface, and any future concrete elements. <br /> Observe that the bars are free of dirt, rust, scale, ice, or other deleterious materials <br />that will reduce adhesion to the concrete. <br /> Observe that anchor bolts are installed in the concrete at the spacing indicated on the <br />project plans. <br /> <br />Any discrepancies or deficiencies that are observed will be brought to the attention of the <br />contractor and/or their subcontractor. Daily reports of our observations will be available <br />to the contractor and/or authorized personnel at the site. <br /> <br />AET does not provide surveying services, therefore, our observations of the reinforcing <br />steel will be based on the positioning of the formwork by the contractor and/or their <br />subcontractors. We are not responsible for the exact locations of the formwork, structural <br />bolts, or embedded items. <br /> <br /> Concrete Testing <br />Personnel from AET will perform testing of concrete on an on-call basis when requested <br />by the contractor. These services will be performed by experienced, ACI certified <br />Engineering Technician II at the frequencies required by the project specifications. On <br />site visits when we are observing reinforcing steel, we will have the same Engineering <br />Technician II remain at the site to perform testing of the concrete, thus reducing <br />mobilization charges. Our services will include the following: <br /> <br /> Document that the correct mix is delivered to the site by checking the delivery slips. <br /> Test the slump of the plastic concrete delivered to the site. <br /> Test the air content of the plastic concrete delivered to the site. <br /> Measure the temperature of the plastic concrete delivered to the site. <br /> Compare the test results to the requirements of the project specifications.