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SECTION 01400 <br />QUALITY CONTROL <br />structure will be more than superficially wet under service <br />conditions, the cores shall be tested after moisture conditioning in <br />accordance with ASTM C42. <br />d. Concrete in the area represented by the core testing will be <br />considered adequate if the average strength of the cores is equal <br />to at least 85 percent of the specified strength requirement and if <br />no single core is less than 75 percent of the specified requirement. <br />e. Repair core holes in the concrete found acceptable with an <br />approved dry -pack or non -shrinking mortar. <br />f. If the core tests are inconclusive or are impractical to obtain, or if <br />structural analysis does not confirm the safety of the structure, <br />load tests may be directed by the Resident Engineer in <br />accordance with ACI 318. <br />g. Concrete work evaluated by structural analysis or by results of a <br />load test and found deficient shall be corrected in a manner <br />satisfactory to the Resident Engineer. <br />h. All investigations, testing. Load tests, and correction of <br />deficiencies shall be performed and approved by the Resident Engineer, <br />at the expense of the Contractor. <br />G. Masonry <br />1. General: The testing agency shall check reinforcing steel placement prior to <br />Grouting; quality of block placement and appearance; mortar work; and shall monitor <br />all grouting operations in accordance with the Building Code. <br />2. The inspection -testing agency shall make field tests of mortar and grout in <br />accordance with the Building Code. Grout shall be tested for each 20 cubic yards <br />placed each day. For mortar one test shall be conducted for every 750 square feet <br />of construction. <br />3. Provide prism tests in accordance with the Building Code. <br />H. Structural Steel — General <br />1. Mill Certificates: Mill certificates or affidavits and manufacturer's certification <br />shall be supplied to the inspector for verification of steel materials. Testing <br />laboratory shall be notified at lest three weeks in advance of fabrication and <br />supplied with the reports so that shop inspection may be performed. <br />2. General Inspection: <br />a. Testing agency shall be at the fabricator's plant to verify that materials <br />used match the mill tests or affidavits of test reports; that fabrication, <br />welding procedures, surface preparation, and shop painting meet <br />specifications; and that the work in progress conforms with project <br />requirements. <br />b. Testing agency shall visually check fabricated steel delivered to the job to <br />confirm that the work is in compliance with the approved shop drawings <br />and shall make any physical tests, measurements, etc., believed to be <br />necessary. <br />C. Testing agency shall witness and report all corrections performed by the <br />steel fabricator occurring on the fabricator's own initiative. <br />d. Testing agency shall be present during steel erection at all times. <br />Capital Projects Commuter Rail 01400-6 IFB No. RTA/CP 21-06 <br />Everett Station Phase 2 QUALITY CONTROL <br />