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  1. JCianfarra

    Dry Pipe Valve - Main Drain for full flow?

    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...
  2. JCianfarra

    Dry Pipe Valve - Main Drain for full flow?

    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'"...
  3. JCianfarra

    Dry Pipe Valve - Main Drain for full flow?

    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...
  4. JCianfarra

    Dry Pipe Valve - Main Drain for full flow?

    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...
  5. JCianfarra

    Sprinkler Hydraulic Plate (Sign Placard) information

    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...
  6. JCianfarra

    Sprinkler Hydraulic Plate (Sign Placard) information

    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!
  7. JCianfarra

    Sprinkler Hydraulic Plate (Sign Placard) information

    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
  8. JCianfarra

    Sprinkler Hydraulic Plate (Sign Placard) information

    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...
  9. JCianfarra

    Sprinklers for concealed space with metal trusses and wood sheathing covered by insullation

    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...
  10. JCianfarra

    NFPA-13 sprinkler hazard classification for Hibachi restaurant

    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"...
  11. JCianfarra

    NFPA-13 sprinkler hazard classification for Hibachi restaurant

    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
  12. JCianfarra

    Small Room Rule - Maximum Room Length?

    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...
  13. JCianfarra

    Hydrant Water Flow Test

    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 -...
  14. JCianfarra

    Hydrant Water Flow Test

    I am feeling the water to determine if townships, cities, counties or states have any influence on these mostly privately owned companies.
  15. JCianfarra

    Hydrant Water Flow Test

    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...

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