Rated corriodor with HVAC closet

[cda]

So rated corridor

You open a rated door and there is a HVAC unit, electric

It only serves the corridor.

There is a return air grill, no damper

There is a fresh air duct to the corridor, no damper.

So legal or not legal??

2015 ICODES

sections please either way


Thank you

 

[RLGA]

If doors are required to have smoke and draft control per Section 716.5.3, then smoke dampers are required per Section 717.5.4.1, subparagraph 3.

 

[cda]

I was just looking and wonder if

IBC 717.5.2 exception 3 applies???

Building has full sprinkler system

 

[RLGA]

Well, technically, the wall for corridors is a fire partition, and this section applies to fire barriers. However, Section 717.5.4.1 applies specifically to corridors (the more specific requirement). Even if the wall is required to be a fire barrier for another reason, the requirements for fire partitions as they apply to corridors would still apply.

 

[cda]

Ok let me look at that section

 

[cda]

Ok let me look at that section
, looked and still lost
Hummmm

These are individual rooms attached to the corridor,

The only thing in the room is the hvac

It only serves the corridor,

So still lost if the air grill, for return air only, in the rated wall needs anything???

Or, the supply duct feeding the corridor, thru the rated wall needs anything?

 

[Mr. Inspector]

Make the closet be part of the corridor by having the fire partition continued on the three walls of the closet.

 

[cda]

Make the closet be part of the corridor by having the fire partition continued on the three walls of the closet.

Basically that is what it is now.

There are several of these in the building.

About four feet by five feet. HVAC equipment takes about half the room,
So one problem is the rest will turn into storage and more fire potential

 

[rgrace]

Make the closet be part of the corridor by having the fire partition continued on the three walls of the closet.

This would be my suggestion as well. No dampers required if this solution is used. Can't do anything about future storage use other than perhaps a sign "Fire Hazard - Do Not Use as Storage"

Also consider this, the room is a plenum (IMC 602.1) and materials within this room are subject to 602.2.1.

 

[sergoodo]

An HVAC system completly within the corridor enclosure with no penetrations of enclosure reguires existing enclosure ratiings maintained at the partition and ceiling adjacent to the system; rating not required for any additional partitions doors not penetratin enclosure.