Prestressed Concrete Cylinder Pipe Freshwater and Treated Sewage Lines
Prestressed Concrete Cylinder Pipe Sewer Force Main
Prestressed Concrete Cylinder Pipe Gravity Sewer Line
Option--Intakes and Outfalls

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Optional Suggested Specifications for:

INTAKES AND OUTFALLS

For intakes and outfalls, one of the following options shall be substituted for "FINISHING THE JOINT" in either the pressure or gravity line specifications.

(Fresh Water Intakes and Outfalls and Treated Sewage Outfalls Laid Subaqueously)
No joint protection inside or outside is needed where the pipe joint is continuously below the water line and joint rings are zinc metalized to 0.004-inch minimum thickness.

(Intakes and Outfalls in Sea Water)
Rope-type or trowelable mastics should be used to fill both the inside and outside joint recesses. Mastic for the outside recess should be applied to the spigot shoulder just prior to joining the pipe. On pipe interiors, a rope-type or trowelable mastic shall be affixed to the concrete face of the bell socket just prior to pushing the spigot into the bell, so that the mastic material squeezes to fill the internal joint recess. For portions of the line passing through the surf zone, the joint rings should be painted with coal tar epoxy to 8 mils dry film thickness. Mastics that are detrimental to rubber gaskets shall not be used. Similarly, primers to be used in conjunction with rope-type mastics must not come in contact with gaskets while the primer is still wet.