• Welcome to The Building Code Forum

    Your premier resource for building code knowledge.

    This forum remains free to the public thanks to the generous support of our Sawhorse Members and Corporate Sponsors. Their contributions help keep this community thriving and accessible.

    Want enhanced access to expert discussions and exclusive features? Learn more about the benefits here.

    Ready to upgrade? Log in and upgrade now.

Separate Fire Sprinkler Systems in Mixed-Use Building

Bwana

Bwana

REGISTERED
Joined
Nov 27, 2021
Messages
7
Location
Washington County, Oregon
Remodel of large nationwide retail store - M-Occupancy. There are six attached separate small businesses - B-Occupancies. Retailer doesn't want to share fire protection. Wants to alter existing eight inch riser and send a six inch overhead through a CMU wall to a separate, second riser/independent sprinkler system to serve the smaller businesses. CMU is not a fire wall. This is one building. I thought that a fully sprinklered building had to be served by one sprinkler system unless a fire wall separated the areas served. I am unable to find code to support that. Was I just dreaming?
 
Thank you mtlogcabin for your response. It is an existing system throughout the building. Its just that the primary anchor business (similar to Target) wants to have independent fire sprinkler/alarm systems - even though its one building.
 
I can not think of any code section that would prevent separate zones for sprinkler systems i have on building with 5 floors and 85 zones, and another building with one floor and 3 zones. more examples. You are suppose to have all sprinkler zones fed wiht one FDC per building.
 
Typically the entire building's sprinkler system must be designed based on the most restrictive provisions.
You need to talk with the local Fire Marshal or Fire Plan checker.
 
TheCommish said:
I can not think of any code section that would prevent separate zones for sprinkler systems i have on building with 5 floors and 85 zones, and another building with one floor and 3 zones. more examples. You are suppose to have all sprinkler zones fed wiht one FDC per buil
Click to expand...
I believe you'll find a max of 52,000 sq Ft per floor max per zone for 1 floor for Light or Ordinary Hazard as a general rule for NFPA 13
Question is WHY the decision to subdivide the sprinkler design?
 
You must log in or register to reply here.
Back
Top