×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Fire Protection Coverage Area Determination

Fire Protection Coverage Area Determination

Fire Protection Coverage Area Determination

(OP)

Some technical expertise on this very critical issue of fire protection would be most appreciated.
I've got a Class 1A flammable liquid storage area inside of a building that is required to be retrofitted into an existing facility. The IFC states the following:

1. 0.60 gpm/sq ft over an area of 5000 sq ft in a Table (another chapter in the code indicates that for hazardous materials "ordinary hazard group 2 with a minimum 3000 sq ft coverage".
2. 750 gpm minimum hose stream demand


A. Regarding number one above, I am assuming that I must use the square footage given, even though my actual area of the building storing the 1A flammables is only 500 sq ft. Please confirm.
B. Regarding number two above, I am assuming that the 750 gpm counts for both inside and outside hose streams and that I will not need any additional hose allowance. Please confirm.


So, based on the above, am I correct to assume that my new sprinkler demand is (0.60 x 5000) + 750 = 3750 gpm? (I've only seen a max 2500 gpm fire pump in the field, so this makes me think this approach is wrong).
Or, do I only consider my actual area of coverage and go with (0.60 x 500) + 750 = 1050 gpm? Please advise.

Logically, I would think you only apply the density to the area you actually have, but the code verbiage indicating "minimum design area" has taken me aback, and now I am not sure.

Any help would be greatly appreciated.

Joe

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources