A concrete thrust block cast against undisturbed earth supports an in-line gate valve on a main water line. The valve secures to the concrete anchor using number six minimum tie-down bars embedded into the concrete block. A number eight copper wire provides grounding or utility identification. The concrete block is two feet deep, with a width determined by the valve size plus the variable dimension A, as specified in the provided valve anchor schedule. Flanges, bolts, and nuts must remain clear of the concrete pour to ensure accessibility. Thrust blocks are applicable only for unrestrained pipe connections.
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