firewall penetration

[scd51]

Am involved in installing structured cabling in renovated elementary school. We are suppossed to install a sleeve in a four hour rated block firewall. 1. Can we do this? 2. What is largest diameter penetration allowed?

 

[SooCS]

You can apply "Chartek" on the surface of the wall. "Chartek" is a exposy material,which foams up into thick insulation material when heated up. It has been tested and approved for offshore application use against hydrocarbon fire for up to 2 hours (H120 rating), it probably last much longer in cellular fires, which is much less severe. Try talk to them.

Nu-chem is the other company making the similar product.

 

[peebee]

You can put whatever size penetration you want through that wall so long as you seal the hole when you're done with a UL-listed 4-hour firestopping product such as those mentioned by SooCS.

 

[alehman]

UL has very specific approved configurations for rated penetrations. To maintain the rating of the wall, you must use a UL approved design or have UL provide an engineering opinion on your design.

http://database.ul.com/cgi-bin/XYV/...n=versionless&parent_id=1073995580&sequence=1

http://products3.3m.com/catalog/us/...oducts_3_0/command_AbcPageHandler/output_html

http://www.us.hilti.com/holus/modules/adfssel/adfs_main.jsp