Accessory Rooms within Rated Corridor/Lobby?

[Aslattery]

Can an enclosed office be considered an accessory space and not rated within a rated lobby? See attached. We are proposing a rated corridor connecting to a rated lobby, and not wanting to rate the glass/windows into the office.

Thanks!

 

[cda]

Welcome

1. what occupancy type??

2. Fire sprinkler system??

Some allow it,, I would not,,,, part of corridor.

 

[Aslattery]

Type V-A construction, NFPA 13R Sprinkler
R-2 Occupancy
Renovation Alteration Level 2, no change in occupancy
3-Story

This office is a new enclosed secure office in place of an open reception area.

 

[cda]

Should have asked what year IEBC and IBC?

So is it R-2 already or changing to??

 

[Aslattery]

should have given all the info on my end!

2018 IBC / IEBC

already R-2.

 

[cda]

Type V-A construction, NFPA 13R Sprinkler
R-2 Occupancy
Renovation Alteration Level 2, no change in occupancy
3-Story

This office is a new enclosed secure office in place of an open reception area.

Is that office area/ front area separated or will be separated, by a fire barrier, from the R-2???

 

[Aslattery]

Proposing separated by 1 hour fire barrier from units as shown in red, but not from corridor or lobby.

 

[cda]

Proposing separated by 1 hour fire barrier from units as shown in red, but not from corridor or lobby.

Well I could see if the B or office area, or whatever is in that area, is seperated from the R-2, You could use the non rated corridor provision.


Other than that, I do not like using the rated wrap, to negate requirements...

Some allow it,

I am not an IEBC person, so not sure if that helps you.

Give it a few days for some others to respond.

 

[Paul Sweet]

Many lobbies have open desks. I don't see where enclosing this space would make it less safe, especially since it is separated from the rest of the building,and the building is sprinklered. There is an adequate clear path of travel.

This is an exit access, not exit discharge, but it still appears to meet exception 1 for IBC 1028.8.

 

[cda]

To me the idea of a rated corridor

Keep people as safe as possible

Do not pollute the exit way.

 

[Yikes]

Is the front door a required exit?
Oftentimes in a multifamily design, the entrance is in the middle of the corridor, with required exits at the end of the corridor.
If that describes your situation, just put a rated door (or pair of doors) on a magnetic hold-open right at the intersection of the corridor and lobby: