Incidental Accessory Occupancy Means of Egress

[Mech]

Just because an incidental accessory occupancy requires a fire separation and/or protection, it does not automatically require fire resistant rated construction to the building exit, correct?

I'm thinking fire resistant rated construction is NOT automatically required.

Thanks.

 

[Architect1281]

Incidental / accessory can be seperated OR supressed (sometimes both)

IF you opt for separation rather than supression the use must be seperated from the remainder of the building

the remainder being everthing that isint the incidental / accessory

so yes if its an exit exit access exit passage or rest room it does not matter. its enclosing envelope must be rated to the seperation required

508.2.5 Separation of incidental accessory occupancies.

The incidental accessory occupancies listed in Table

508.2.5 shall be separated from the remainder of the

building or equipped with an automatic fire-extinguishing

system, or both, in accordance with Table 508.2.5.

 

[Glennman CBO]

You can rate the space only, if you wish. Rating everything to the exit discharge only needs to happen if there are issues with travel distances from the space to the exit discharge, or if a rated corridor is needed based on occupant load, etc. You do not have to rate everything just because one space needs it.

 

[Mech]

Thanks Glennman, that's what I was thinking. Too bad I didn't convey that in my original post.

 

[Mech]

IBC 1015.3 Boiler, incinerator and furnace rooms states . . . Where two exit access doorways are required, one is permitted to be a fixed ladder or an alternating tread device.

Are they saying a floor or roof hatch providing access to a ladder is allowed? I was originally thinking I would need door leading to a platform / landing on the outside of the room which then provides access to a ladder.

 

[Glennman CBO]

I would think that since the ladder provides an exit access, that the roof probably doesn't eventually lead to the public way, unless you are suicidal (he, he).

 

[Mech]

I would think that since the ladder provides an exit access, that the roof probably doesn't eventually lead to the public way, unless you are suicidal (he, he).

:lol:

What about an underground building?

 

[Glennman CBO]

Mech...I would venture to say that the ladder would be approved for an underground building as a secondary, as long as the other exit access was approved as a primary (stairs, ramp, etc).