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threads and the flanges shall be designed to prevent corrosion of <br /> the threads from outside . <br /> D . Flanged joints shall be made with bolts or stud bolts and nuts . <br /> Bolts , stud bolts , and nuts shall conform to American Standard <br /> heavy dimensions , semi-finished with square or hexagonal heads <br /> and cold punched hexagonal nuts , meeting the requirements of <br /> ASTM Designation A-307 . Bolt sizes shall be American Standard <br /> for the flanges specified , and bolts and nuts shall have good , true <br /> threads . <br /> E . Full faced gaskets shall be in accordance with AWWA Standard <br /> Specifications C115/A21 . 15-99 , or latest revision . <br /> 1 . 08 SUBMITTALS <br /> Before starting fabrication of the ductile iron pipe and fittings , the <br /> Contractor shall submit complete detailed working drawings for approval <br /> by the Engineer of Record and IRCDUS . Such drawings shall show the <br /> piping layouts and contain schedules of all pipe , fittings , valves , <br /> expansion joints , hangers and supports , and other appurtenances . <br /> Where special fittings are required , they shall be shown in large detail <br /> with all necessary dimensions . The drawings submitted shall show <br /> flanged jointed sections placed so as to be removable without disturbance <br /> to the main pipe sections . <br /> 1 . 09 MARKING <br /> A. Number 10 stranded conductor copper trace wire shall be spiral <br /> wrapped or affixed to the top of the pipe . See trace wire detail M- <br /> 14 for specifications regarding installation . <br /> B . Trace wire is required over all pipes . <br /> C . A 2" wide magnetic I . D . location tape is required over all pipes . <br /> Tape is to be installed 12" below proposed finished grade. <br /> 1 . 10 INSTALLATION <br /> A. Unless otherwise noted on the drawings or in other sections of this <br /> specification , the pipe shall be handled and installed in strict <br /> accordance with the manufacturer's instructions and with the <br /> applicable provisions of AWWA Standard Specifications C600-99 , <br /> or latest revision . If a conflict exists between the manufacturer's <br /> instructions and the AWWA Standard Specifications , the <br /> manufacturer's instructions shall govern . The Contractor shall use <br /> every precaution during construction to protect the pipe against <br /> the entry of non-potable water, dirt, wood , small animals , and any <br /> other foreign material that would hinder the operation of the <br /> pipeline . Where the groundwater elevation is above the bottom of <br /> the trench , the Contractor shall provide suitable dewatering <br /> 1 - 4 <br />