×
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

Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

(OP)
A 4 storey building with 20,000 sq.meter as a floor area for each storey is divided into 5 zones to comply with system protection area limitation as per NFPA 13 section 8.2. Now if five risers are provided to serve the building with sprinkler system, how many fire pumps are required. A single fire pump set (Duty, standby and jockey) will serve all the five risers or a separate pump have to be provided for each riser? NFPA 13 speaks about providing a riser for covering a floor area not more than 4831 sq.meter. Does the term 'riser' means seperate system with separate fire pump? Please clarify.

RE: Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

A building can have multiple sprinkler zones supplied by a single fire pump set.

I would assume you need standpipe valves per NFPA 14, but verify that.

Determine the flow and pressure requirements, whether it is for standpipe or the most remote sprinkler zone on the top floor and size the single pump for that.

RE: Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

(OP)
Pedarrin2, Thanks for the response. Do I have to provide separate Alarm check valve for each riser?

RE: Number of Fire pumps if the floor area exceeds "system protection area limitation" given i

Each required sprinkler zone would have to have means to detect flow for notification of where the actuated sprinkler is located.

This could be a flow switch.

Since you have a fire pump, when it starts up, there should be contacts within the panel which would provide alarm functionality.

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