I am away from my desk and code materials, but I was just advised by the buildings architect that we will need to provide a 90 minute fire rated fire shutter to protect a bank tenant from a ground floor high rise building lobby. This is a Type 1-A fully fire sprinkled high rise building located in Los Angeles. So 2019 CBC.
This is in response to the bank downsizing and in turn increasing the ground floor building lobby. I have attached a couple plans. The demo plan shows the existing conditions. Note the non rated storefront glass and double doors that separate the existing bank from the existing elevator lobby. The floor plan shows the condition after the bank has pulled back to the new demise creating a true ground floor lobby for the building. This lobby is two floors tall, and the elevator lobby on the second floor overlooks the lobby area.
This condition is replicated in every jurisdiction I have worked in. Typically the ground floor tenants fronting the lobby have full height glass that is in no way protected.
Unlimited area building. non separated occupancies can easily be achieved. I for the life of my cannot figure out what is making the building architect impose this requirement.
Can anyone think of a code requirement that would require this? Thanks for your time.
This is in response to the bank downsizing and in turn increasing the ground floor building lobby. I have attached a couple plans. The demo plan shows the existing conditions. Note the non rated storefront glass and double doors that separate the existing bank from the existing elevator lobby. The floor plan shows the condition after the bank has pulled back to the new demise creating a true ground floor lobby for the building. This lobby is two floors tall, and the elevator lobby on the second floor overlooks the lobby area.
This condition is replicated in every jurisdiction I have worked in. Typically the ground floor tenants fronting the lobby have full height glass that is in no way protected.
Unlimited area building. non separated occupancies can easily be achieved. I for the life of my cannot figure out what is making the building architect impose this requirement.
Can anyone think of a code requirement that would require this? Thanks for your time.