Steel Beam Garage Door Header

The beams will need to span 16 how.

Steel beam garage door header.

Add together all live loads and dead loads that act on the member and then choose a material that will resist the load. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more. Doors in a load bearing wall that holds the weight of the house created by beams and trusses need a larger header than those in non load bearing walls. The idea behind sizing headers and beams is straight forward.

We have an old cinder block garage shed building built in 1967 with 2 9 foot wide garage door openings. 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 header for a door is much like a bridge transferring the weight above it to the floor and foundation below. What size and guage of steel i beam do i need for a garage header.

The beam must be strong enough so it doesn t break fb value and stiff enough so that it doesn t deflect excessively under the load e value. The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam. I need to size a steel beam for over a garage door opening. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts.

The open span is 14 5 ft there will be a single point load of 4 200 lbs at 4 from one end. Tbe row of 6 blocks have a 2 x 10 on top and a 2 x 10 below them. The beam they have specified now is 3 1 2 x 12 x 18 9. In an attempt to construct portal frames some garages are built with one continuous garage header extending over two or three garage door openings as shown in figure a.

Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18.