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B. Fittings <br />All underground fittings shall be ductile iron with mechanical or manufacturer's <br />mechanically restrained joints. Fittings shall conform to the following: <br />1) Fittings for pipe shall be compact ductile iron conforming to AWWA C 153. Fittings <br />shall have a minimum pressure rating of 350 psi. All fittings and the appropriate <br />number of downstream and upstream joints must be restrained. <br />2) All fittings shall be lined and coated as specified for ductile iron pipe. <br />3) Retainer glands or thrust blocks for restraint shall not be permitted. <br />C. Joints <br />1) Push on Joints - Joints for D.I. pipe shall be bell and spigot, rubber gasket <br />compression, push -on type as specified in AWWA C111 (ANSI A21.11). Special <br />fittings and joints shall be considered for specific installation. <br />2) Mechanical Joints - Mechanical joints may be used for downstream restrained joint <br />pipe. In this circumstance, the joint shall be restrained in accordance with the <br />following paragraph C.3) d. <br />3) Restrained Joints - Fittings used for changes in alignment, size reduction, valves and <br />plugs shall all be restrained along with the appropriate number of downstream and <br />upstream joints. Restraint shall be by the use of mechanical methods. As indicated <br />on the drawings, pipe lengths located upstream and downstream of restrained fittings <br />shall also be restrained. Method of joint restraint shall be as follows: <br />a. Ductile iron pipe with manufacturer's mechanical restrained joints using <br />locking rings or wedges may be utilized. These restraints shall be American Pipe <br />"LOK-FAST" joints, McWane "SUPER LOCK" or approved equal. <br />b. Ductile iron pipe and fittings with mechanical joint ends shall be restrained <br />with Ebba Iron "MEGA -LUG" grip type restrainers, series 1100. <br />C. Ductile iron pipe with push -on joint ends shall be restrained with "UNI - <br />FLANGE", large diameter, series 1390 restrainers, or approved equal. <br />d. Retainer glands or locking gaskets shall not be approved as mechanical <br />restraints. <br />4) Gaskets - All gaskets shall be manufactured of an elastomeric material. The gasket <br />shall provide a positive, tight seal under all combinations of joint and gasket <br />tolerances. Installation and lubrication of gaskets shall be as directed by the <br />manufacturer. <br />D. Foundation Rock <br />02534 - 3 <br />02534- Sanitary Sewer Force Mains <br />