Fire Protection Required

[mtlogcabin]

V-A construction type A-3 occupancy
Because it is heavy timber a one-hour is assumed by code. The question is the lower steel rod holding the truss in tension, does it need to be protected? I am thinking yes with an intumesenct paint as a possible solutions.
Thought please

 

[SCBO1]

See definitions of Secondary Members, does this apply?

 

[mtlogcabin]

I am thinking it falls under Primary Structural

4. Bracing members that are essential to the vertical stability of the primary structural frame under gravity loading shall be considered part of the primary structural frame whether or not the bracing member carries gravity loads.

If the rod goes the vertical stability goes

 

[SCBO1]

M,

I agree it would fall under the Primary Structural.

Are you thinking that the same product that you can coat the timbers and the fletch plate with would also work on the steel rod, intumesenct paint also comes in a clear product. I think?

 

[steveray]

The HT would be allowed in lieu of 1hr rating typically....I would say paint the rod..

 

[Francis Vineyard]

704.3 would permit the rod to be protected only on the exposed side (not encased).