77-94 PROVIDING FOR THE LOCAL IMPROVEMENT BY THE CONSTRUCTION OF A SYSTEM OF SANITARY SEWERS KNOWN AS CRESTWOOD SPECIAL ASSESSMENT SANITARY SEWER DISTRICT

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. . f . ' � . , -2- . The slopes of all gravity sanitary sewers are given in percentage and all sections have a uniform gr.ade . No sewer shall have a flow velocity of less than 2 .5 fee•� per second and none shall have a flow velocity exceeding I2 feet per second . Minimum and maximum grades are shown on the detailed plans . The pipes and fittings for the sanitary sewer system are to be first quality vitrified clay complying to the la.test standards of the American Society of Testiag Materials, Designation C-200 or C-278 : or the latest addition thereto. Vitrified clay sewers are to be laid on an even, firm bed throughout the full length of the barrel so �hat no unevea strain will come on any pipe, and particular care will be exercised to prevent the pipes bearing on the sockets or bells. Excavations shall be care- fully made to receive the bells . Each pipe is to be laid in conformity with the line and levels therefor, and in the presence of an inspector from the engineers . The socket end of all pipe is to be laid upgrade . The spigot end of the next pipe shall be inserted into the socket end of the lower pipe until the face of the spigot comes into contact with the shoulder of the pipe all aiound. This spigot end shall be supported with sufficient jointing material to make the flow lines of the two pipes coincide at the �oints . Tee-branches or wye-branches for house connectinns are to be vitrified clay pipe 4-inches in diameter, equal in quality and dimensions to that heretofore described . Tee-branches or wye-branches shall be closed by means of a disc or stop.per cemented in place, and shall be provided and set along the sewers, being located in front of abutting properties so as to serve such properfies with sewage facilities . City standard manholes are to be provided at the location and depths as shown in "Exhibit 2" as specified in "Exhib�t 3" . All roadways will be restored by thorough compaction of all trench material , grading of all depressions and bumps and the application and cover and seal cqFs as specified . This work shall be done under the supervision of the engineers .