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Correspondences Carol Cotter - Re: Sewer Line Construction Page 1 From: Bob Mosley To: Carol Cotter Date: 5/24/2004 1:17:08 PM Subject: Re: Sewer Line Construction Sounds like a correct reading of the new sewer design guidelines! »> Carol Cotter 5/24/2004 9:47 AM »> Bob - I am reviewing sanitary sewer line construction documents submitted for Liberty Subdivision off SH6 and Southwest Parkway. They need to extend the public sewer approximately 170 feet, all of which will be less than 3.5' cover. The Unified Design Guidelines, Pipe Alignment - Vertical Layout call for ductile iron pipe for covers less than the desired 6', and possible cement stabilized sand backfill for covers less than 3.5'. I will be requiring the ductile iron pipe. Do you concur that the pipe shall be backfilled with cement stabilized sand? The line is at the end of the sewer shed. Carol CC: Spencer Thompson