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Section P-407 Clay and Concrete Sewer Pipe Joints
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Pre-cast bituminous joints for clay or concrete sewer pipe shall be able to withstand a temperature of 160° F without softening so as to destroy the effectiveness of the joint, and shall not be soluble in any of the wastes carried by the drainage system. Pre-cast bituminous joint material shall:
- Bond firmly to the surface to which it is applied;
- Be accurately cast within the hub and on the spigot;
- Bond securely in the assembled joint; and
- Completely and evenly fill the annular space between the hub and spigot.
Mortar joints for clay sewer pipe or concrete sewer pipe shall be made by packing a closely twisted jute or oakum gasket of suitable size to pass around the pipe and lap at the top, into the annular space between the pipes. The remaining space shall be filled with firmly compacted mortar composed of one part portland cement and three parts mortar sand. The material for the mortar shall be mixed dry; only sufficient water shall be added to make the mixture workable. Lime putty or hydrated lime conforming to Type S of ASTM C207, equal to not more than 25% of the volume of portland cement, shall be permitted in the mortar.
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