Why register? ...To Enhance Your Experience
Contact Us

Most Popular

+ Reply to Thread
Results 1 to 9 of 9

Thread: Standpipe GPM?

  1. 09-18-2010, 07:20 AM #1
    Dibbs12
    Dibbs12 is offline
    Forum Member
    Join Date
    Sep 2010
    Location
    Colorado
    Posts
    38

    Default Standpipe GPM?

    Can you get enough water into a type I standpipe to supply 2 2.5 inch hoses both flowing 325 gpm?
    Reply With Quote Reply With Quote

  2. 09-18-2010, 09:01 AM #2
    CrnkB8
    CrnkB8 is offline
    Forum Member CrnkB8's Avatar
    Join Date
    Jun 2009
    Posts
    217

    Default

    Yes. Calculating GPM is based on pipe or hose diameter and the pressure at which water is being force through these.

    Basically GPM=29.7 x D˛ x √P. So, your formula would be 29.7 x 2.5˛ x √50

    Even at 50 psi, an open butt 2˝" should flow almost 1300 gpm
    The most important task on the fireground is the one YOU have!
    Reply With Quote Reply With Quote
  3. 09-18-2010, 03:13 PM #3
    ChiefKN
    ChiefKN is offline
    Back In Black ChiefKN's Avatar
    Join Date
    Feb 2003
    Location
    The Nice Part of New Jersey
    Posts
    6,982

    Default

    Quote Originally Posted by CrnkB8 View Post
    Basically GPM=29.7 x D˛ x √P.
    I usually do that math in my head.
    I am now a past chief and the views, opinions, and comments are mine and mine alone. I do not speak for any department or in any official capacity. Although, they would be smart to listen to me.

    "The last thing I want to do is hurt you. But it's still on the list."

    "When tempted to fight fire with fire, remember that the Fire Department usually uses water."
    Reply With Quote Reply With Quote
  4. 09-19-2010, 10:36 AM #4
    nmfire
    nmfire is offline
    Forum Member nmfire's Avatar
    Join Date
    Nov 2002
    Location
    Maryland (DC Suburb)
    Posts
    5,741

    Default

    Right. Just keep turning the red knob up until steam comes out the windows.
    Even the burger-flippers at McDonald's probably have some McWackers.
    Reply With Quote Reply With Quote
  5. 09-20-2010, 11:37 PM #5
    fire49
    fire49 is offline
    Forum Member
    Join Date
    Nov 2009
    Posts
    2,433

    Default

    Read Nfpa 14 for the set up on a standpipe

    If you are talking in a building I think it is 500 gpm out of one and 250 gpm out of all others
    Reply With Quote Reply With Quote
  6. 09-20-2010, 11:54 PM #6
    fire49
    fire49 is offline
    Forum Member
    Join Date
    Nov 2009
    Posts
    2,433

    Default

    http://tn.gov/commerce/sfm/documents...opdrawings.pdf
    Reply With Quote Reply With Quote
  7. 09-24-2010, 09:34 PM #7
    TL Mickey
    TL Mickey is offline
    Forum Member
    Join Date
    Sep 2010
    Location
    NY
    Posts
    53

    Default

    usually about 65 PSI. remember to keep in mind PRV's
    Reply With Quote Reply With Quote
  8. 09-28-2010, 05:34 PM #8
    MemphisE34a
    MemphisE34a is offline
    Forum Member MemphisE34a's Avatar
    Join Date
    Jan 2004
    Location
    Memphis, TN - USA
    Posts
    2,356

    Default

    Quote Originally Posted by Iessthename View Post
    usually about 65 PSI. remember to keep in mind PRV's
    Are you seriously the same guy that pm'ed me the following:

    Quote Originally Posted by Iessthename
    You immature southern fool. way to represent the rest of us in the country who know how to keep our mouths shut. You make us look like a bunch of malcontent yokels.
    Wow. When you get done with your tutor, send her my way.

    To the original poster......yes.
    Last edited by MemphisE34a; 09-28-2010 at 09:23 PM.
    Robert Kramer
    cell #901-494-9437

    Management is making sure things are done right. Leadership is doing the right thing. The fire service needs alot more leaders and a lot less managers.

    "Everyone goes home" is the mantra for the pussification of the modern, American fire service.

    Comments made are my own. They do not represent the official position or opinion of the Fire Department or the City for which I am employed. In fact, they are normally exactly the opposite.
    Reply With Quote Reply With Quote
  9. 09-28-2010, 08:17 PM #9
    ffmedcbk1
    ffmedcbk1 is offline
    MembersZone Subscriber ffmedcbk1's Avatar
    Join Date
    Aug 2003
    Location
    Ohio
    Posts
    781

    Default

    Quote Originally Posted by fire49 View Post
    Read Nfpa 14 for the set up on a standpipe

    If you are talking in a building I think it is 500 gpm out of one and 250 gpm out of all others
    that is correct.... just did that in the hydraulics class last night. (500 gpm w/ 100 psi at the top discharge without fd supply, otherwise they are required to have a fire pump)
    Originally Posted by madden01
    "and everyone is encouraged to use Plain, Spelled Out English. I thought this was covered in NIMS training."
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. hose
    By mook13 in forum Fireground Tactics
    Replies: 43
    Last Post: 10-02-2006, 08:04 PM
  2. What a load! FE Nozzles and hose debate
    By imtxff44 in forum Firefighters Forum
    Replies: 62
    Last Post: 10-20-2003, 12:38 PM
  3. Jumbo tanker
    By neiowa in forum Apparatus Innovation
    Replies: 30
    Last Post: 04-23-2003, 08:37 PM
  4. Just a matter of physics
    By firefighter26 in forum Firefighters Forum
    Replies: 25
    Last Post: 10-15-2002, 08:56 PM
  5. Water Tanker Shuttles
    By dc45b in forum Fireground Tactics
    Replies: 14
    Last Post: 07-08-2000, 11:07 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules