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Sorry for the limited information. The GC that contacted me had very little information. The building will be a 40' X 40' X 12' building at a local landfill. The landfill will be capturing the Methane gas and converting it into a useable from and piping it into an electrical generator. The...

We just took over the inspections of this project and are currently researching our options to fix this. My Construction manager has found a company that has a product that will allegedly break done the material and allow the debris to be flushed out. It should also protect against future...

This really isn't a question but more a picture we took of a dry system we were inspecting. Believe it or not the owner really thought it would be just fine. This is a short piece of 2 1/2" pipe taken out of the end of a dry pipe line. We tried to flush the lines but after attache about 40' of...

I hope there is someone out there that can help me with very little information. Where would I find information on explosion protection? I have installed and sold system with explosion proof material but never dealt with explosion protection. Any information would be greatly appreciated.

Dave, I had just finished laying out a grid system Core & Shell where the branch lines ran parallel to the main wall. When I read the description my mind thought branch line. I then assumed 7'-6" to the first line, 15' between lines and 8.666' between heads on the line. I could be mistaken. Chad

SD2, I just wanted to clarify. After re-reading your post you were very specific in referencing the 15' X 15' spacing. Later you talked about the reasoning being noticing a head that looked to far of a wall in a "storage" area. Now I am by no means any type of FPE but in NFPA13 2007 Table...

To all, I was just re-reading some of the old posts and this one caught my eye. I thought that NFPA qualified the unit separation had to be vertical. If there are two units stacked then the horizontal fire separation wouldn't be acceptable and 13R would be the applicable standard. I am going...

SD2, I couldn't agree with you more. I have seen an apartment complex (13R) go for $0.92 per sqare foot and an 85,000 square foot school go for $0.87 yes I said $0.87 per sqare foot. I don't have a problem with pricing and installing the proper devices to meet the forward flow requirments but...

NightME, Did you ever hear back From NFPA on this issue?

Travis, If it is possible I would also like to get a link to this paper. The AHJ's in our area have just started requiring the DW calc. Chad Johnson Flow FIre Protection

SD2. I am out here in Northern Colorado and we use anti freeze wherever we can. I agree that in most large scale situations a dry system can reduce the cost (especially with a listed tank)but we have found ways around that. All of the AHJ's in our area have accepted figure 7.6.3.1 with a loop...