2011年3月4日 · In design of thrust blocks, NFPA 24-02 calls out the thrust equation under figure A.10.8.2(a) based on the applicable variables. There is also Table A.10.8.2(a) which reports thrust values for pipe bends based on pipe size, pipe angle bend, and 100 psi pressure.

2010年5月14日 · 24.2.1.6 Modifications that cannot be isolated, such as relocated drops, shall not require testing in excess of system working pressure. 24.2.1.7 Loss shall be determined by a drop in gauge pressure or visual leakage. 24.2.1.8 The test pressure shall be read from a gauge located at the low elevation point of the system or portion being tested.

2014年6月4日 · NFPA 24 states "all piping and attached appurtenances shall be hydrostatically tested" and basically thats all it says about testing. This is not very informative as i am used to B31.3 where all bases are covered as far as bolted connections used for blinding not subject to testing and a whole paragraph on allowing closure welds as long as the ...

2006年7月14日 · NFPA 24 recommends a maximum velocity pressure of 10 PSIG. However, it is not a mandatory requirement because it is in the Annex, which contains recommendations rather than requirements. Upvote 0 Downvote

2012年3月6日 · Then your design needs to comply with NFPA 24 for the underground private fire service main and NFPA 13 for the automatic sprinkler system. If the building requires a standpipe, it need to comply with NFPA 14 and can be part of the automatic sprinkler system. You can't use HDPE pipe for the underground.

2008年1月27日 · According NFPA 24, each change direction in a pipe route needs an anchor block, for thrust pressure. It is necessary for each change direction, aboveground and underground? According construction department of the Company, they never see this anchor blocks, in any firefighting system. It is possible to use a relief valve? B. regards, Luis

2013年9月16日 · Yes, I think NFPA 24 v2010 "mentions", and defers, "spacing" of hydrants basically to the authority having jurisdiction. [That being said, I believe designers are probably increasingly using GIS etc. in fire and other flow analyses and models, and to help in determining "spacing" for hydrants and valves etc. to satisfaction of authority(ie)'s ...

2009年2月13日 · NFPA 24 permits it. However, the IFC requires a minimum fire flow of 1500 GPM @ 20 PSIG for commerical buildings. Your hydraulic analysis and site geometry will most likely drive the pipe diameter.

2018年5月11日 · When it comes to thrust block sizing, NFPA 24 calculation methodology includes a Factor of in their equation and at least NFPA 24 2010 refers to that factor of safety as "...usually 1.5" Can someone point me to literature as to what determines what that factor of …

2006年7月8日 · From NFPA 13: The proper method of conducting this test is to use two hydrants in the vicinity of the property. The static pressure should be measured on the hydrant in front of or nearest to the property and the water allowed to flow from the hydrant next nearest the property, preferably the one farthest from the source of supply if the main ...