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frequency of testing will provide less than five strength tests for a given class of <br /> concrete, conduct at least five strength tests from randomly selected batches. If <br /> fewer than five batches are used, conduct one test from each batch.) <br /> c. Slump(ASTM C143); one test at point of discharge for each set of compression <br /> test specimens; additional tests when concrete consistency appears to have <br /> changed. <br /> d. Air entrainment(ASTM 231);test the first batch of air entrained concrete and <br /> one additional test for each set of compression test specimens. <br /> e. Test concrete temperature hourly when air temperature is 40°F and below and <br /> when 80°F and above; and each time a set of compression test specimens is made. <br /> 2. Perform concrete mix verification. (Technical I) <br /> a. Verify mixer truck trip ticket conforms to approved mix design. <br /> b. Verify that total water added to mix on site does not exceed that allowed by <br /> concrete mix design. <br /> c. Verify that concrete quality is indicative of adequate mixing time, consistency and <br /> relevant time limits. <br /> C. Item and Frequency(Section 05120- Structural Steel, Section 05210- Steel Joists, Section <br /> 05312- Steel Roof Decking)(Qualifications in parentheses): <br /> 1. High Strength Bolting: <br /> a. Preparation: Visually inspect mating surfaces and bolt type for all slip-critical <br /> bolted connections for general conformance with the contract documents prior to <br /> bolting. (Technical II) <br /> b. Slip Critical Bolts and Tension Bolts: Test bolt tightening in 10%of all bolts. <br /> Test a minimum of two bolts in each connection. Verify that all plies of <br /> connected elements have been brought into contact, at 100% of connections. <br /> Verify all tips are removed from "twist"-off bolts. (Technical II) <br /> c. Bearing Bolts: Visually inspect to conform all plies of connected elements have <br /> been brought into contact, at 100%of connections. (Applies only to bolts <br /> designed for values not requiring exclusion of threads from failure plane, all other <br /> bolts require testing as for tension bolts.) (Technical II) <br /> d. Standard: Test High Strength bolted connections per R.C.S.C. "Specifications <br /> for Structural Joints Using ASTM A325 or A490 Bolts", and UBC Standard 27- <br /> 7. <br /> ADDENDUM#1 <br /> 1607.001 - ORONO ICE ARENA(CP-2) Page 01410 - 10 <br />