Does Proximity Impact NFPA 13 vs. 13R vs. 13D?

10/29/2019

Does the proximity of a residence and the number of windows on that residence make a difference in which system type is used (between NFPA 13, 13R, or 13D)? What are the restrictions that would impact the system type?

Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe

3 Comments

Wayne Ammons

10/29/2019 07:38:19 am

Interesting question, check out one of Joe's recent blog posts:
https://www.meyerfire.com/blog/when-can-i-use-nfpa-13r-part-i

I am not very familiar with exposure protection, but that is what your question made my mind jump to so I immediately thought to reference Section 1.1 - Scope of NFPA 13, 13D, and 13R which explains where each standard is applicable. There is also NFPA 80A, Recommended Practice for Protection of Buildings from Exterior Fire Exposures. You may also want to get the owner and project engineer involved to help decide which standard and method of protection is most appropriate for your scenario.

Pari

10/29/2019 11:36:48 am

in our jurisdiction any single home greater than 10,000 S/F, fire sprinkler design shall be per NFPA13R and attached or detached garage greater than 750 S/F shall be design per NFPA 13.

Also dedicate fire water line required for 13R system , with this requirements the larger houses or garages can have better life safety protection.

Arthur J Tiroly link

10/30/2019 02:44:17 pm

13-D is limited to 1 and 2 family dwellings. Water supply has to supply just two sprinkler for 10 minutes.

13-R is limited to apartments 4 stories or less.
Water supply is required to support 4 sprinkler.
Only the dwelling units and adjacent hallways require sprinklers. None in attics or false spaces.

NFPA 13 also allows that only 4 sprinklers need to be supplied in dwelling units and adjacent corridors. Attics and false spaces require 100% sprinklers.

Free Signup

Subscribe and learn something new each day:

Community

Thank You to Our Top
February '21 Contributors!

1. Dan W.
2. Franck
3. Jesse
4. CJ B.
5. Brian G.

6. Mike
7. Matt
8. Casey M.
9. Jay R.
10. Glenn B.

Your Post

SUBMIT A QUESTION

The Toolkit

Sprinkler Designer or Engineer?

Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:

FREE 30-DAY TRIAL

GET THE TOOLKIT

Why Sponsor?

Filters

Exam Prep

2020 PE Prep Guide
(Available Now!)

PE Prep Series
(Available Now!)

2020 PE Prep Series
Current Leaderboard
(Click to enlarge)

PE Problems

Visit July-October for daily Fire Protection PE Exam sample questions.

Solutions are posted the day after posting.

Comment with your solutions, questions or clarifications.

Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.

RSS Feed

Home - About - Blog - Contact - Exam Prep - Store

Copyright © 2021 MeyerFire, LLC
The views, opinions, and information found on this site represent solely the author shown and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a commission for orders placed elsewhere.