1957 566 Ordinance - Laserfiche WebLink

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(b) LAYh1G TIC PIPE: 1~~There necessary to deflect pipe from a straight li,n.e, either vertical or horizontal, the degree of deflection shall be approved 'oy the l;ngineer. ?;henever it is necessary 'to cut pipe ths.s shal]. 'oe done in a neat and ti^rorl~ianlike manner without damage to the pipe, Leaving the end smooth and at right angles to the axis of pipe, ?o payn.ent vaill be made .for the portion of the pipe cut off and pct used in the line. At times ti~~rlien pipe laying is not in progress the open ends shall be closed by approved means and no trench water shall be permitted -to enter the pipe . (c) V~LRIATIOI~?S IN DTl;L~i`?Sioi+1S: The outside diaineter~ of the spigot end of be1.l-anca-spigot pipe varies v+~i.th the t-pe, size, and class of pipe. There is only one joint size for each diameter of mecha.nical- joint pipe. Th115, difficulty may be rret vr'trcn attempts are made to connect; existing bell--ancl-spigot lines to mechanica].-joint pipe. ?~~then such a connection must be made, an adapter having a fitting bell a.nd a mechanical-joint socket is manufactured and may be used.- ~:If 'the existing line ends in a spigot, either a standard sleeve or a special fitting consisting oz a bell and mechan:i.ca.1-joint soclcet may be used, provided that the fitting betvreen the spigot end of the existing line and the bell to be connected to it is consistent with the normal fit of bell-and-spigot pipe. (d) CL~~11.TA?G Ai+17 f1SSEl-]3LIi~G JOINT: Tho 1:ast 8 in. outside of the spigot a:1d. inside of the bell of rnecllanical-joint piL~e shall be thorough- ly cleaned to remove oil, grit, tar (other than standard coating), and other foreign ii~atter from the joint, and then painted. tivith a soap solu- tion made by dissolving one-half' cup of €;ranulated soap in 1 gallon of water. The cast-iron gland shal]_ then be sl.ipl~ed on the s;~igot end of the pipe vrith the lip extension of the gl.ancl toc,~ard the soclcet or bell end. The rubber gasket shall be painted vri.th the soap solution and placed on the sp:i.got end with the t:riick edge tovrar. cl the gland. (e) BOLTTi1G Ol, JOI•iTt The entire section of the pipe shall be pushed forvrard to seat the spigot end in the bell. The gasket shall then be pressed into place tivithin the bell, being careful to have the gasket evenly located around tiie entire joint. The cast-iron gland shall be moved along the pipe into position for bolting, all of the bolts in- serted, and the nuts scretived up tightly ~^rith the fingers. All nuts shall be tightened ti~ri.th a suitable (preferably torque-limiting) vurench. The torque for various sizes of bolts sY~all be as follows: Size l~,an~e of Torque in. ~ fta-l~u. 5/S ~.o- 60 3/?~ 60- 90 1 70-loo 1-1/~. ;~G-120 T?uts spaced 180 degrees apart shad-1 be tightened alternately in order to produce an equal pressure on a,11 parts of •tre gland. lZeference should be made to the 1i~Iotes on i~;~ethod of Installation~~ included in American Standard S~ecifica-tions for a Iechanical Joint for Cast Iron Pressure Pipe and rittirrgs--A21,1i (A':,":i11 C111). See also Note 9b.la.. -7-