Steel Beam Garage Door Header

I cannot exceed a beam height of 8.

Steel beam garage door header.

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. These 9 foot openings are only supported by a makeshift header consisting of 6 cinder blocks sitting horizontally across the top of the opening. Add together all live loads and dead loads that act on the member and then choose a material that will resist the load.

The beam they have specified now is 3 1 2 x 12 x 18 9. I need to size a steel beam for over a garage door opening. The garage has doors on two sides and the trusses will be landing on the garage door headers. 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.

Portal frame details within the irc specify simple span headers with a maximum finished opening width of 18. We have an old cinder block garage shed building built in 1967 with 2 9 foot wide garage door openings. Opening is 18 ft wide and beam will rest on 2 18 by 18 posts. 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. The person doing the takeoff had interpreted my request for an 18 9 garage door header to the least expensive 20 long beam. 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 beams will need to span 16 how.