×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

NFPA 13 maximum area protected per riser

NFPA 13 maximum area protected per riser

NFPA 13 maximum area protected per riser

(OP)
Hi! I'm new to design on fire protection. These are my questions regarding the maximum floor area per riser.
1. If the building I'm about to design has multiple floors, is the maximum floor area accumulated on all floor?
2. If I exceed the maximum area per riser do I need a new fire pump for that? 1 pump per riser?

Thank you!

RE: NFPA 13 maximum area protected per riser

The maximum allowable area is for each riser. The "riser" is the assembly with a control valve, check valve, flow switch and drain. For light and ordinary hazard areas, one riser is allowed to protect up to 52,000 square feet. Storage risers may protect 40,000 square feet.

If your building is more than two stories in height there must be a separate riser for each floor at a minimum. Otherwise you may have a system protect two floors if the combined area is less than the maximum allowed for the hazard.

RE: NFPA 13 maximum area protected per riser

I'm glad I looked at this thread.
We are on NFPA 13-2016 in NY.
It's 52,000SF/floor.
In 2016 they added some stuff about more than two floors. (I just saw this - hence why I'm glad.)
I just looked at 2019 and it looks like they completely rearranged to standard. Can some one point out where is area requirement is in 13-2019?

RE: NFPA 13 maximum area protected per riser

NFPA 13 was completely revised in the 2019 edition. So exactly what are you asking?

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close