I have the drawing pretty much done, except for a few pipe sizes. Only one 'building' is obvious. The rest who knows. A three story wing off a one story building? Addition or new building?
At 08:15 AM 4/6/2009, you wrote: >Jeez Todd, more design according to DMR/HHS standards? >Keep digging, takes a lot of time. I usually prepare a schematic. >Can you determine what is a "wing" or "addition" vs. what is another >"building"? >Tom > > >Forgot, there are two other standipipes (size unknown) 3 stories with >2-1/2" hose valves. > > > >At 08:00 AM 4/6/2009, you wrote: > >Determining age is a difficult task. There have been several > >additions and modifications to the system with very little record > >keeping. From an FIA plan, the oldest building is 1932. There are > >additions dated 1955, 1967, 1973 and one that was erected after the > >date of the plan, which is 1975. Even the plan isn't clear on where > >one stops and the other begins. Most of the appendages are labeled > >"addition" or "wing", so as to what constitutes a different building > >is probably a good question. > > > >There is one 2-1/2", 5-story standpipe with 1-1/2" FHV and one > >2-1/2", 4 story standpipe with 1-1/2" FHV. I believe that these are > >both part of the 1932 building. There is one 2-1/2", 5-story > >standpipe with 2-1/2" FHV. I'm not sure the age of that building. One > >3-story building with 2-1/2" FHV fed from a 4" combination riser > >(buried in wall. I believe that is 4". The rest are fed from > >'horizontal standpipes' on the level where the service enters or a > >fed from sprinkler mains. Three of the standpipes are interconnected, > >but there are also sprinkler risers that are interconnected, so I'm > >not sure (at this point) what is connected to what. I'm getting close, >though. > > > > > > > > > > > >At 04:57 PM 4/5/2009, you wrote: > > >Sounds like your first task is to map the standpipes, since they are >buried > > >in walls. (Unless accurate as-built drawings exist.) The easiest way >we've > > >found to do this is with an underground locator, with an induction >signal. > > >(Similar to a line locator the utilities use.) You can rent these at some > > >rental supply places.) Once you confirm what connects to what, some > > >exploratory holes will have to be made to verify pipe size. See Snake >tech. > > >by Ridgid tool co makes this a easier task, with less cleanup or repair >to > > >rated wall assemblies. Even so you're not going to know where every >fitting > > >is, so be generous in your calc's for Phantom fitting loss. Calc's are > > >required because even the old requirement was 65Psi at the top, and >current > > >requirements are for 100Psi. If you static on the supply is only 60, it > > >didn't meet code when it was installed if the building is newer than >1963. > > >(I believe that was when the 65Psi was required in 14.) > > >Sounds like calc's for Manual wet standpipe or fire pump for automatic. > > > > > >Thom McMahon, SET > >_______________________________________________ >Sprinklerforum mailing list >http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >For Technical Assistance, send an email to: [email protected] > >To Unsubscribe, send an email to:[email protected] >(Put the word unsubscribe in the subject field) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
