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EXHIBIT B CONT . � <br /> 3. Sewer mains shall have a minimum diameter of eight <br /> ( 8 ) inches ; except in short non-extendable mains , <br /> six (6) inch-mains are acceptable. <br /> C. Manhole:; <br /> 1. Sanitary sewer manholes will conform to the <br /> Improvement Standard Drawings . <br /> 2. a. Sanitary sewer drop manholes shall be used where <br /> the difference in invert elevations in a manhole <br /> exceeds 24 inches . <br /> b . Sanitary sewer drop manholes will conform to <br /> the Improvement Standard Drawings . . <br /> 3. The normal maximum spacing for manholes shall be <br /> 500 feet for sewers 18" to 30" in diameter and <br /> 400 feet for sewers 15" or less in diameter. <br /> D. Cover Reouirements <br /> The minimum depth of cover for sanitary sewers <br /> shall be 3 feet , 6 inches (3 ' 6" ) . <br /> E. Structural Reouirements <br /> Pipe shall be des.1gned to resist all possible <br /> live load and dead load conditions . <br /> F. Building Service Lines <br /> 1. In new developments , the building service sewer <br /> lines from the sewer to the right of way line shall <br /> be installed at the time the sewer is constructed. <br /> 2. Building service sewer lines shall have a minimum <br /> slope of 1/4" per foot . <br /> G . Location <br /> 1 . The location of sanitary sewers within dedicated <br /> _ 49 _ <br />