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?
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?