2 Hr. Fire rated paint storage room

[IWMI]

Could some one help clarify 2 hr fire rated drywall. It is an existing room that will be used for storing paint in. It currently has 1/2" drywall interior and 3/8" t1-11 on the exterior of one wall for this room. Can 2 shhets of 5/8" be applied over top of the t1-11 or will it need removed? Also ventilation is a requirement and I am being told it does not have to be continuos but I believe osha says it must?
Thanx,

 

[TXStructural]

The requirements are in the IBC/IFC. OSHA has requirements, but these depend upon what exactly the nature of the materials are. You say paint, but is it flammable, or is ventilation required for other reasons (such as toxicity)? If the materials are flammable, there are limits on quantities in each room. There will also be requirements for sprinklers and controlling the runoff from these and fire department hoses. There are also requirements for at least two exits, spaced not greater than 1/2 the longest diagonal dimension of the room for hazardous occupancies, up to a maximum egress distance. Some installations also require that doors open to the outside of the building. IBC and OSHA requirements also depend upon whether it is closed container storage or the room is also used for dispensing (transferring materials from one container to another.) See IBC 2012 section 414, for some requirements.

A fire protection engineer or safety engineer will be able to answer these questions with specificity. This is something which requires proper analysis and assessment.

 

[IWMI]

Thank you we are including some specific engineering into this project.

 

[MiketheEngineer]

TX has it right