I'm used to gravity filling to abandon old sewers, but this engineer wants us to pump grout/lsm into an abandoned 8" cast iron watermain to assure it's completely filled.
Has anyone ever done this before? How should we go about it?
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Edited: Nov 20, 2018
Engineer wants us to pump fill old cast watermain..
Engineer wants us to pump fill old cast watermain..
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