Steel Beam Garage Door Header

Tbe row of 6 blocks have a 2 x 10 on top and a 2 x 10 below them.

Steel beam garage door header.

We have an old cinder block garage shed building built in 1967 with 2 9 foot wide garage door openings. The only added weight on the header will be 4 by 8 joists 3 4 plyw read more. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18.

What size and guage of steel i beam do i need for a garage header. 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 beams will need to span 16 how.

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 garage has doors on two sides and the trusses will be landing on the garage door headers. 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. 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 header for a door is much like a bridge transferring the weight above it to the floor and foundation below. I need to size a steel beam for over a garage door opening. I cannot exceed a beam height of 8. 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 beam they have specified now is 3 1 2 x 12 x 18 9.