Garage Door Header Steel Beam

The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam.

Garage door header steel beam.

You can use a w8x31 50 ksi steel beam for your 18 clear span beam. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. Window door garage door headers supporting roof loads only. The beam is 8 wide and 8 deep.

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. The beam they have specified now is 3 1 2 x 12 x 18 9. 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. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more.

Read the beam size or choice of beam sizes from the table. Wait it gets worse. 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. You will need to have a local engineer detail your connections size your column supports and determine foundation requirements.

Lvl is ideal for floor beams garage doors window and door headers and ridge and hip beams multiple pieces of boise versa lam laminated veneer lumber can be assembled for greater thicknesses that can carry even heavier loads across even longer spans ordinary nail assembly installs as easily as ordinary lumber. This header spans a 6 opening and supports 4 floor joists with 2 stories and a roof above it. Select the span carried by the beam across the top of the table. Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.

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.