Before revision: Riser clamp for a standpipe through-penetration firestop inside a fire hose cabinet under construction A Riser clamp is a type of hardware used by mechanical building trades for pipe support in vertical runs of piping (risers) at each floor level.
After revision: riser clamp for a standpipe through-penetration firestop inside a fire hose cabinet under construction A Riser clamp is a type of hardware used by mechanical building trades for pipe support in vertical runs of piping (risers) at each floor level.