ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
600 KW 120/208 3 Phase Y protection
by gfretwell. 07/20/17 01:02 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,174 Are you busy
174,564 Re: Forum
166,994 Need opinion
Who's Online Now
0 registered members (), 23 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#34326 - 02/08/04 04:20 PM fire walls  
seattleman  Offline
Member
Joined: Feb 2004
Posts: 17
Seattle, WA, USA
What is a 1hr, 2hr, and 4hr fire wall. I always thought a 1 hr is 5/8 rock on each side of stud. I also was wondering how many electricians out there keep a copy of the uniform building code on hand or found it worth purchasing.


Work Gear for Electricians and the Trades

#34327 - 02/08/04 04:40 PM Re: fire walls  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Seattleman, there are literaly hundreds of different assemblies for these ratings.

Go here https://www.electrical-contractor.net/ubb/Forum18/HTML/000021.html

and try the link at the bottom, If you take the assembly listed on an architects drawing you can find how it's constructed on the UL page, or you could buy a set of the orange books.

Roger


#34328 - 02/08/04 04:53 PM Re: fire walls  
Ryan_J  Offline
Moderator
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
First of all, it would not be wise to purchase the uniform buidling code, since nobody uses it anymore. A copy of the IBC might be more worthwhile, but it depends on your state.

There are many, many, many ways to create fire-resistance rated walls. The most common is (1 HR) 5/8 type X gypsum baord nailed on 7" O.C. with 6d cooler nails, joints staggered and treated. Two hour...same but two layers. Three hour...same but three layers. Four hour....masonry.

Again, these are just a couple of the hundreds of ways to achieve a rating.


Ryan Jackson,
Salt Lake City


Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,138
Joined: May 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7515 MB (Peak: 0.8764 MB) Zlib enabled. Server Time: 2017-07-21 06:34:01 UTC