709.3 exceptions allow for 1/2 hr rated walls yet all penetrations still require fire sealing.
Does anyone have 1/2 rated systems or are 1 hr methods still the minimum allowed in these walls?
It seems that fire caulks, collars, dampers etc all start with 1 hour.
Does anyone have 1/2 rated systems or are 1 hr methods still the minimum allowed in these walls?
It seems that fire caulks, collars, dampers etc all start with 1 hour.