Report of project testing services

Home Browse Search

AET Project No. 20-06374 — Page 5 of 8 We performed compressive strength testing of 1 ] sets of test cylinders cast by AET personnel. The results of these tests were presented in our Reports of Compressive Strength of Cylindrical Concrete Specimens. Copies of these were previously submitted under separate cover. The test results exceeded the specified 28-day design compressive strength. MASONRY OBSERVATIONS AND TESTING During construction of the masonry bearing walls, AET personnel made periodic visits to the site to perform observations. These services were performed on a will-call basis between the dates of October 9 and November 3, 2006. Our services included the following: • Observing that the proper units were used, and that the units were clean and dry. • Observing that the masonry bearing surfaces were clean before the mortar and masonry units were placed. • Observing that the spaces to receive the grout were clean before grout corefill was placed. • Observing the vertical reinforcement, including placement and alignment of bars and dowels, measuring the bar sizes and lengths of bar lap splices, and observing the clearance between bars and clearance from masonry units. • Observing the general construction practices required by the project specifications. Based on our observations, it appeared that those portions of the masonry wall which we observed during our visits to the site were being constructed in general conformance with the approved project plans and specifications. We observed several deficiencies on October 9, 2006 with the reinforcing steel placement within the masonry wall. The deficiencies observed were corrected and re-observed the same day. We also performed compressive strength testing of grout corefil] "prisms" cast during masonry wall construction observed by AET personnel. The results of these tests were presented in our Reports of Compressive Strength of Grout Specimens. Copies of these reports were previously