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Another issue to consider, this building is four levels. It probably will require at least one standpipe. Will the fire pump be the sole source of water for the standpipe (automatic wet)? or will there be assistance by the responding fire department (manual wet)? If the pump is supplying the...

The AHJ is, in reality, probably overthinking the situation. It would seem unlikely that a fire would travel up the stairs and activate two sprinklers. However, based on the application of the code, the AHJ is correct. Without some sort of obstruction, such as the lintel, if a fire originates at...

There are definitely cost saving implications when using the Flow/Thread pipe instead of 10/40. I have a mixture of client preferences that I deal with. If there are no specs, they use the Eddyflow/Eddythread40. Corrosion is on everyone's mind nowadays, it seems. What I am starting to see more...

I agree with NewtonFP. There is no real issue with long drops needing bracing, no matter how "floppy" they seem. I would use flexible drops at the bottom to alleviate any concerns about sagging and vibration.

I usually don't post, but I cannot resist jumping into this. I've been designing for 35 plus years, and when I see "I have not been doing this too long", my skin crawls. In addition for running my own design company for 16 years, seeing a "newbie" jump out there in the freelance market...