Report of project testing services

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AET Project No. 20-06374 — Page 6 of 8 submitted under separate cover. The test results exceeded the 28-day design compressive strength. OBSERVATIONS OF WELDED AND BOLTED CONNECTIONS NDT technicians from our firm observed field we]ded and bolted connections for the building on a will-call basis between the dates of February l3 and June 29, 2007. The scope of our services during these observations included the following: • Performing observations and nondestructive testing, as required, on in-process and completed field welding of structura] steel and welded attachments to the structure. This included monitoring that proper equipment, methods and materials were used for the existing conditions. � Performing visual we]d observations in accordance with the requirements of Section 6 of the AWS D1.1 Structural Welding Code (steel), Section 6 of the AWS D1.3 Structural Welding Code (sheet stee]) and/or applicable contract documents. lndividual welds were judged for quality, size and length. • Observing bolted connections for compliance with Section 9a of the "Specification for Structura] Joints using ASTM: A325 or ASTM: A490 Bolts" approved by the Research Counci] on Structural Connections. This included observing bolted connections for appropriate bolt length, washer installation and ply contact of joint; and observing that the splined end of the Tension Control Bolt (TCB) was sheared off after tensioning. • Observing stee] decking, including performing observations and testing, as required, on puddle welds attaching steel deck to the structural steel and observing that proper span, spacing, adequate support and fasteners are provided, when required. Our observations indicated that the completed field welds for the structural connections satisfied the requirements of the referenced codes and applicable project plans and specifications.