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<br />backtillirtg activities. <br />Foundation: <br />I. Observation, veriticatirnt and testin~~ of bearin4_ capacity of all Ioundations and pmvidin~~ <br />recommendations where unsuitable hearin~~ conditions exist. if encountered. <br />3. Provide ohservatiim and testin~~ ol~ concrete during all foundation placements. iricl«din~~ <br />slump, air content. unit weight. temperature and fabrication of compressive stren<~th <br />cylinders. <br />~. As requested, verify the size. location and placement of reinforcing steel within fi~undations. <br />=t. -f encountered, quantify rock removed from the foundations and verify quantities with on- <br />site personnel. <br />Concrete: <br />Provide sampling, testing and observation of concrete placements, including, slump, air <br />conteatt. unit wei~~ht. temperature and fabrication of compressive strength specimens. <br />?. If needed; observe and document post-tensioning.: activities. Report elongation data <br />immediately for review and approval by the Structural Engineer. <br />_>. As requested, verify the size. location and placement of reinforcing steel <br />Structural Steel: <br />Provide. continuous observation and testing, of shop and field full and partial penetration <br />welds and multipass fillet welds. y <br />2. Provide visual weld inspection, shear stud testing, and verify bolted comtection as required <br />by the specification. <br />Sprayed Fire Resistant Materials: <br />I . Perform thickness testing in accordance with ASTM E605 at a rate o1' 35% of the structural <br />columns and beams as required by code and 1 test/10,000 sfi on all other members. <br />2. Perform density and bond strength testing of the fireproofing in accordance with ASTM E <br />C0~ and ASTM. E 7,6 at a rate of I test /10.000 stun columns. beams and deck. <br />Please note, as you likely arc. aware, The Department of Labor, Occupational Safet<~ and <br />Health Administration has issued new mandatory requirements for steel. erection, which <br />are effective as of January 18, 2002. This regulation affects the t}~pe and amount of <br />concrete testing required for steel structures. The following is an excerpt from 29 CFR <br />Part 1926. <br />Page 3 of 7 <br />