I just want to go over this a bit. R309.1 for door from garage to residence.
The requirement is for either a 1 3/8" solid wood door, 1 3/8" solid (don't know how that is achieved-maybe they mean flat) or honeycombed core steel doors or a 20 minute fire rated door. Our village actually increased the door thickness to 1 3/4" for both and removed the reference to 20 minute fire rated doors completely.
First, who knows what the difference is in a 20 minute door and a 1 3/8" door as listed above?
Second, is a 20 minute fire rated door a B label door or different label? For some reason I thought a B label door was 45 minutes.
Third, If a B label is different from a 20 minute rated fire door, what is that difference?
I just thought I'd start a little discussion for the BB.
The requirement is for either a 1 3/8" solid wood door, 1 3/8" solid (don't know how that is achieved-maybe they mean flat) or honeycombed core steel doors or a 20 minute fire rated door. Our village actually increased the door thickness to 1 3/4" for both and removed the reference to 20 minute fire rated doors completely.
First, who knows what the difference is in a 20 minute door and a 1 3/8" door as listed above?
Second, is a 20 minute fire rated door a B label door or different label? For some reason I thought a B label door was 45 minutes.
Third, If a B label is different from a 20 minute rated fire door, what is that difference?
I just thought I'd start a little discussion for the BB.