Triplegreen500
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So, at work, we have a 2" water feed line that runs the length of our performance room (I work in a live music venue). Figure...a 100' run. There are (4) 90 degree bends in the pipe, to clear what used to be a roll-up garage door - instead of going straight, it comes in, turns left; turns right; turns right; then a final left to get back into the original line. Those bends/angles are, I suspect, what's enabling the pipe to move.
Every time someone flushes a toilet, that line moves laterally. A LOT. Enough so that I worry about long-term fatigue to the pipe, the couplers, and the all-thread hangars.
It is run parallel to a 4" or 5" cast iron sprinkler pipe. Figure....about 8" apart. I'd have to measure to be sure.
What I (and my boss) would like to do, is horizontally-brace the water line, to the sprinkler pipe, to help quell the horizontal shifting when water pressure changes. I will use the correct ferrous clamps, with all-thread between them, to perform horizontal bracing but no support loading. Both pipes are fully independently supported - by clamps and all-thread - directly to the building structure (ceiling joists). I can't imagine that beefy cast-iron sprinkler pipe would be subject to the kind of deflection the smaller water pipe is, but I'll give it a couple good pushes first just to be sure.
We're open. Inspections are completed. However, these are visible systems and anyone could look up and see these braces.
I've been digging through the NFPA and can only find references to lateral loading for areas subject to seismic activity (this is MD, we are not in an earthquake zone). It says I can't have the sprinkler pipes encumber the LOAD of another system...but I can't find anything about whether or not I can laterally brace off of it.
Plumbers - what say you?
Every time someone flushes a toilet, that line moves laterally. A LOT. Enough so that I worry about long-term fatigue to the pipe, the couplers, and the all-thread hangars.
It is run parallel to a 4" or 5" cast iron sprinkler pipe. Figure....about 8" apart. I'd have to measure to be sure.
What I (and my boss) would like to do, is horizontally-brace the water line, to the sprinkler pipe, to help quell the horizontal shifting when water pressure changes. I will use the correct ferrous clamps, with all-thread between them, to perform horizontal bracing but no support loading. Both pipes are fully independently supported - by clamps and all-thread - directly to the building structure (ceiling joists). I can't imagine that beefy cast-iron sprinkler pipe would be subject to the kind of deflection the smaller water pipe is, but I'll give it a couple good pushes first just to be sure.
We're open. Inspections are completed. However, these are visible systems and anyone could look up and see these braces.
I've been digging through the NFPA and can only find references to lateral loading for areas subject to seismic activity (this is MD, we are not in an earthquake zone). It says I can't have the sprinkler pipes encumber the LOAD of another system...but I can't find anything about whether or not I can laterally brace off of it.
Plumbers - what say you?