Wood Nailing Strips on Metallic Seismic Curbs

[Builder Bob]

What does the code state concerning the limited amount of combustibles on a seismic curb for HVAC units installed on a type II B Building?

What says ye guru's of building code knowledge?

Builder Bob

 

[Builder Bob]

By the vast amount of chirping crickets i can hear, I see everybody else is stunned as well.

BB

 

[mtlogcabin]

Such a small amount. Not much different than "blocking" for windows and door frame installation

603.1
Exceptions...........
14. Blocking such as for handrails, millwork, cabinets and window and door frames.

 

[ADAguy]

What is thickness of blocking?
Length of nails/screws?
Specie of wood?
Seismic connection?
Weight of equip. attached to it?
Provided by curb manuf.?

 

[Builder Bob]

1x , attached to edge of curbing to facilitate the termination strips for roofing/ flashing.

State Agency indicating that the code does not reflect the allowable use of combustible material in this instance.

 

[ADAguy]

OK, so these are nailers for the cant strips, not horizontals sitting on top of the curbs?

 

[Builder Bob]

You got it ADA guy

 

[north star]

@ ~ @

FRTW, or use some type of Fire Rated Paint \ Coating
on the blocking.

& = &

 

[ADAguy]

Only if exposed, or not?

 

[steveray]

I'm with MT on blocking.....technically there is no limit in Ch. 6......All the time for curbs and parapets...