I'm sorry but I don't understand the comment "Maybe if the valve is just cracked and not full open". If its just used as a drain connection there is not issue, however if it is used as a 'Main Drain' test there is ~140 psi behind a 2" valve so it will still be one heck of a crack. And you can't...
Cdafd, This is a question about a specific system, and ultimately about all systems in general. After I saw the answers I figured that my describing it as "...a 4" dry pipe valve on an upper level of a building" and asking if "...the drain on the dry pipe system valve considered a 'Main Drain'"...
The wording for the 'Main Drain Test Connection' says it "...shall be provided at locations that will permit flow test of water supplies and connections." So if this is the case if we are considering the piping from the fire pump up to the attic part of the 'Water Supply', it seems as though we...
Hello Forum,
In a case where you have a 4" dry pipe valve on an upper level of a building and the 2" 'Main Drain' discharges into a 4" floor drain, does this floor drain need to take a full flow test or is the 2" drain simply for system drainage purposes. If I had a standard wet sectional...
Yes the number(s) do come from the hydraulic calculations. As the Coffee Break article reiterates, "The required flow and residual pressure demand at the base of the riser", and this of course is typically not the number that you find on the cover or an the end of the demand curve. The...
Yes it is similar, regretfully it is a closed thread so I can't add my comments to it, however hopefully somebody interested in expanding the discussion sees this one!
cdafd,
Yes you are correct with your linked reference to the post that talks about those other issues I initially referenced. Are you implying that I should include my query there as well for them to see since those members obviously were interested in this topic?
Thanks,
Joe Cianfarra
Hello Forum,
re: Sprinkler Hydraulic Plate (Sign Placard) information
I have seen a lot of confusion regarding the information on a fire sprinkler hydraulic plate. The address placed in the "location" slot instead of the remote area location, total number of sprinklers instead of number...
Forum,
I have a case in an NFPA-13 building that has an attic space above a suspended ceiling. The pitched roof above it constructed of metal joist and metal trusses and covered by wood sheathing. Directly under the roof covering the wood sheathing is a layer of R30 incapsulated vinyl...
That is exactly the point; a Hibachi is not quite a normal restaurant. When seperated, a restaurant seating area is typically "Light Hazard" and the "Service Area" Ordinary Hazard Group 1. Does a Hibachi grill with at-seat preperation essentially turn the entire restaurant in a "Service Area"...
re:NFPA-13 sprinkler hazard classification for Hibachi restaurant
What would the NFPA-13 sprinkler hazard classification be for the seating/cooking areas be in a Hibachi restaurant? Ordinary Group 1 seems to be the obvious answer but who knows?
Thanks, Joe Cianfarra
I came across a light hazard occupancy room with two standard doors and a dimension of 18'2 x 30'3 (~550sf < 800sf) so I determine it meets the defenition of a "Small Room". If I spaced my sprinklers along the room width 4'1 _ 10' _ 4'1 and 7' _ 14'3 _ 9' along the room length, both my average...
In Philadelphia the Water Department is actually the most pleasurable department in the City to deal with. You call for water data and they are more than willing to help, and if you need a new test done you just send in the check for a couple hundred bucks and you gets your results soon enough -...
thread184-235867
Hello Members, I remember being told by a sprinkler company owner about 30 years ago that the first thing you do when either designing or estimating a sprinkler job is call and ask for the wate flow data. He said it could take as much as two weeks to get the information from...
