Steel Beam Garage Door 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.

Steel beam garage door header.

Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more. The garage has doors on two sides and the trusses will be landing on the garage door headers. The beams will need to span 16 how.

Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18. Tbe row of 6 blocks have a 2 x 10 on top and a 2 x 10 below them. 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. Add together all live loads and dead loads that act on the member and then choose a material that will resist the load.

The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam. 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 header for a door is much like a bridge transferring the weight above it to the floor and foundation below. I cannot exceed a beam height of 8.

I need to size a steel beam for over a garage door opening. The open span is 14 5 ft there will be a single point load of 4 200 lbs at 4 from one end. 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. These 9 foot openings are only supported by a makeshift header consisting of 6 cinder blocks sitting horizontally across the top of the opening.

The idea behind sizing headers and beams is straight forward.