Read the beam size or choice of beam sizes from the table.
Garage door header steel beam.
What you re seeing here is a header built with a 2 6 bottom plate 2 4 cripple studs and a 2 4 top plate resting on the adjacent block walls.
It weighs 31 pounds per foot of beam length.
What size and guage of steel i beam do i need for a garage header.
This header spans a 6 opening and supports 4 floor joists with 2 stories and a roof above it.
The only added weight on the header will be 4 by 8 joists 3 4 plyw read more.
You will need to have a local engineer detail your connections size your column supports and determine foundation requirements.
Using the continuous span floor joists table with 30 0 span carried select either 3 1 2 x 11 1 4 or 5 1 4 x 9 1 4.
Select the span carried by the beam across the top of the table.
Opening is 18 ft wide and beam will rest on 2 18 by 18 posts.
Window door garage door headers supporting roof wall floor loads.
Wait it gets worse.
The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam.
The lowest point is at the middle and it sags down about 1 2.
A beam with a 10 span carries 15 0 simple span joists on each side.
The beam is 8 wide and 8 deep.
On previous projects i have been supplied a glu lam boise makes specifically for garage door headers that was 3 1 2 x 11 1 4 x 18 9.
The beam they have specified now is 3 1 2 x 12 x 18 9.
Window door garage door headers supporting roof loads only.