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John Hunter
Senior Member
Username: johnhunter

Post Number: 177
Registered: 12-2005
Posted on Wednesday, March 22, 2023 - 07:01 pm:   Edit PostDelete PostPrint Post

We have a project in San Francisco where there has been a request for a glazed entrance to an elevator lobby. The building is fully sprinklered, so per CBC 3006.2.1 an unrated smoke partition is all that's required. Have any of you used storefront in this kind of application?
Thanks
Brian Payne
Senior Member
Username: brian_payne

Post Number: 303
Registered: 01-2014
Posted on Wednesday, March 22, 2023 - 07:09 pm:   Edit PostDelete PostPrint Post

I went down this rabbit hole a few years back. No good news, but I’ll try to respond later with more info.
Steven Bruneel, Retired Architect
Senior Member
Username: redseca2

Post Number: 715
Registered: 12-2006


Posted on Thursday, March 23, 2023 - 06:36 pm:   Edit PostDelete PostPrint Post

There are interior glass automatic sliding door assemblies available that are used in ICU rooms and other applications where a smoke, but not fire, rated assembly is needed at wide openings for patient bed passage. That is an expensive solution.
Then there is the option to punt the problem: Use a totally standard (project standard or otherwise) door system and install a separate roll down smoke barrier in front of the door.
Both systems offer fiddley solutions for emergency egress
Curt Norton, CSI, CCS
Senior Member
Username: curtn

Post Number: 254
Registered: 06-2002


Posted on Wednesday, March 29, 2023 - 09:15 am:   Edit PostDelete PostPrint Post

You will still need a system rated for smoke if you don't use the smoke curtain. (Honestly, the smoke curtain at each elevator door is my preferred solution)

For our office, we used hollow metal frames and a wood door with a smoke rating. You would have to check with the storefront manufacturers to see if they offer smoke ratings.

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