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City of Elk River — Elk River Fire Station 93 .A MERICAN Proposal for Project Testing Services j ENGINEERING AET Proposal No. 26-20557 March 30, 2021 TESTING, INC. Page 4 of 6 — "prisms" will be cast according to the testing frequency required by the project specifications. One of the "prisms" will be tested for compressive strength after 7 days and two will be tested after 28 days. The fourth specimen will be held for future testing, if required. Observations of Welded and Bolted Connections During erection of the structural steel frame, steel joists, and metal decking, AET will provide a Level II Engineering Technician (AWS Certified Welding Inspector) certified in accordance with ASNT to perform observations of the welded and bolted connections. These services will be performed on a will -call basis when requested by the contractor. Our services will include the following: • Observe bolted connections for compliance with Section 9a of the "Specification for Structural Joints using ASTM: A325 or ASTM: A490 Bolts" approved by the Research Council on Structural Connections. • Observe welded connections for compliance with the requirements of Section 6 (steel frame) of the AWS "Structural Welding Code" D1.1. Fillet welds will be visually observed for length, quality and suitability. Full or partial penetration welds will be tested by ultrasonic or magnetic particle methods. • Observe deck welds for compliance with the requirements of the AWS "Structural Welding Code" D 1.3. • Observe deck fasteners to verify that the correct number and spacing is provided in accordance with the project specifications. • Observe and test the shear stud's welds for suitability and quality in accordance with the requirements of AWS "Structural Welding Code" D1.1 — Section 7. Any deficiencies or deviations which are observed will be reported to personnel from the contractor and/or their subcontractor. We estimate a total of 4 site visits will be required to complete our observations of the welded and bolted connections on this project. Daily field reports of our observations and testing will be available to the contractor and other authorized site personnel. Floor Flatness Testing (Optional) Floor Flatness testing may be required by the engineer if requested. These services will be performed by an experienced Staff Engineer or Engineering Assistant. The field testing will be completed in accordance with ASTM: El 155, "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 2000 or 2002 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. Bituminous Testing (Optional) Upon request of the client, when placement of the bituminous base and wear layers begins, an experienced Engineering Technician II would make site visits on a will -call basis to observe the placement and rolling of the bituminous layers and to perform testing of the bituminous. The technician would perform the following services: Measure the temperature of the bituminous as it is placed and while it is being rolled. Measure the thickness of the bituminous layer while it is being rolled. Help to establish a rolling pattern each day by observing the number of passes the roller