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I (B) Have water-ti~ht Joints thaC shall be <br /> electrically welded, or threaded and coupled <br /> with heavy recessed-iype couplings. The <br /> coupling should cover the threads ~hen made <br /> power tight. <br /> I (C) Be equipped with a drive shoe when the casing <br /> is seated in a consolidated rock formation and <br /> any ocher ~ells if the resins is driven. The <br /> <br /> i .. drive shoe shell be forged, high carbonj <br /> tempered, seamless steel end have a beveled <br /> hardened cutting edge. A drive shoe will hoc <br /> be required for veils in which: <br /> I (1) l~e cement grout surrounds and extends the <br /> entire length nt easin$; and <br /> (2) The casing ia i~scalled without <br /> I lnterierence from formations1 material. <br /> (3) Calvanized pipe must be in compliance with <br /> the requirements of the latest revision of <br /> ASTN Specification Al20. <br /> I (D) The mini=u~ yell thickness for e given diameter <br /> shall equal or exceed that specified in Table <br /> I TABLE 1: HININUM ~^LL THICKNESS FOR STEEL <br /> CASINC: <br /> <br /> Nominal Diameter Wale Thic~ness <br /> (in.) (in.) <br /> <br /> For 3½" or smaller pipe~ schedule &O is <br /> required. <br /> <br /> I ~ 0.142 <br /> ~ O.156 <br /> <br /> I 6 0.185 <br /> 8 <br /> <br /> 1~ 0.~0 <br /> I 14 and lsr~er 0.~$ <br /> <br /> i (E) Stat~lsss steel casin~, threads, an~ coupli~s <br /> shall confor~ in specifications to the ~eneraL <br />; requirements in ANS1/ASTH A:$10 and also shall <br /> ! <br /> <br />· <br /> <br /> <br />