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SECTION 1 WATER MAINS DUCTILE IRON PIPES AND FITTINGS 1 .01 SCOPE This section covers cast ductile iron pipe and cast ductile iron fittings for water mains . ' 1 .02 GENERAL A. Ductile iron pipe ( D. I . P. ) shall be allowed for use as water pipe r where compatible with the specific conditions of the project. The use of material other than ductile iron may be required by Indian River County Department of Utility Services ( IRCDUS) during construction permit review or by IRCDUS field personnel during construction if it is determined that ductile iron pipe is unsuitable for the particular application . s B . All ductile iron pipe shall be manufactured in accordance with AWWA Specification C150 (A21 . 50-96), or latest revision and shall be pressure Class 300 or 350 minimum as depicted on Table 1 . 1 on page 1 -2 . All ductile iron pipe crossing under roadways and other trafficked areas shall be pressure class 350 minimum . C. Unless specifically indicated otherwise, restrained joint underground piping shall be manufactured restrained bell and spigot and above ground piping shall be flanged . D . Cutting of ductile iron pipe shall be by sawing only. �+ 1 .03 PIPE Ductile iron pipe shall be bell and spigot cast in accordance with AWWA Specification C150 (ANSI A21 . 50-96), or latest revision . Cast ductile iron shall have a minimum tensile strength of 60 , 000 psi , with a minimum yield strength of 42 , 000 psi . Pipe wall thickness shall be computed in accordance with AWWA Specification C150 (ANSI A21 . 51 -96) , or latest revision , using the physical characteristics cited above , with a minimum working pressure of 200 psi and a Laying Condition "Type 2 . " Unless otherwise indicated or specified herein , the pipe shall have the minimum ' wall thickness according to class designation for diameters shown . All pipe shall be given a minimum factory hydrostatic test of 500 pounds per square inch . r 1 - 1