What is the difference between 13r and 13d

In a 13R building, attics, closets and bathrooms typically do not have to be sprinkled. In most cases, you can avoid sprinkling floor and roof cavity space in a 13 system if the cavities are filled typically with insulation. This can result in significant cost savings, but there are a lot of details involved and things to look out for. Especially if you are mixing uses, like multifamily over commercial retail or office, or podium buildings with structured parking.

This is especially important if you are not using a trained professional contractor to install the system. Best of luck with your project! Celine, At first blush, your project sounds like it should be a 13R classification. However, local jurisdictions and their fire departments have complete authority to set additional requirements, so only a proper code analysis for your specific project in the context of your local jurisdiction could confirm that. We can provide that service for you if you need, so just let us know if you need any assistance with that.

The building will have 3 story and rooms total. Generally, yes. Though you would need to confirm the specific system specs with the installer to make sure it is compliant with 13, 13R or 13D. Plumbing - Project Showcase - 1. Safety - 7. System Design - Trade Industry - 2. Vertical Markets - 1. Ahern Co. All rights reserved. Phone number. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.

Thread starter Rick Start date Feb 4, Rick Sawhorse. The B side does not need sprinklers. Joined Oct 19, Messages 20, Location Basement. I thought once you go R you sprinkle the entire building???? More then likely 13R. High Desert Gold Member.

Joined Oct 20, Messages Location Oregon. If the two occupancies are separated by a firewall they are two separate buildings and two separate fire areas.

I think it's a 13D, but I may be wrong. The B wouldn't need to be sprinklered if two separate buildings. High Desert said:. Click to expand Rick is this a one story builidng or is the R on top of the B?? It has to be the appropriate 2-hour wall. Each portion of a building separated by one or more fire walls that comply with the provisions of this section shall be considered a separate building.

The extent and location of such fire walls shall provide a complete separation. Where a fire wall also separates occupancies that are required to be separated by a fire barrier wall, the most restrictive requirements of each separation shall apply.