Concrete thrust blocks bear against undisturbed soil to restrain forces at mainline pipe fittings including forty-five-degree elbows, ninety-degree elbows, and tees. Plastic fittings are wrapped with black pipe tape. Thrust blocks consist of one cubic foot of Portland cement concrete mix 420-C-2000 poured directly against stable earth.
45 DEGREE ELL USING BLACK PIPE TAPE WRAP PLASTIC FITTINGS 1 CUBIC FT OF CONCRETE THRUST BLOCKS TO BE PORTLAND CEMENT 420-C-2000 ALL CONCRETE TO BE TEE UNDISTURBED SOIL CONCRETE THRUST UNDISTURBED SOIL MAINLINE PIPE BLOCK, TYPICAL 90 DEGREE ELL MAINLINE PIPE BLOCK, TYPICAL CONCRETE THRUST
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