||01-13-2008 03:21 PM
Garage door header sizing
I am building a detached storage building (16 by 24) and planning to install a 9 foot wide garage door in one gable end. ( I will have a regular 36 inch enterence door on an eave side). There is no second story so the only load on the wall is the 1 by 2 pitched asphalt shingled roof. I was planning to used a doubled 1 by 12 header with plywood sandwiched between; and 2 jack studs (cripples) at either end of the header. I did a seach on Google and found a reference that a 1 by 12 header is only good for up to 7 feet.
(I looked in my own garage and found a doubled 1 by 10 spanning a 16 foot door.) Now I am confused, can someone give me some direction?