The building code header table would limit this beam to a span of 8-5 ft. According to the span tables in an LVL pamphlet I have, it looks like a 5 1/4 x 16 or 5 1/4 x 18 LVL will work. Suppose the garage door opening is on the gable end and is not a load bearing wall.
Want to add a new window or door to an exterior weight-bearing wall? The longer the distance a header spans and the heavier the load it supports, the more substantial it needs to be. Garage doors and other large openings require headers too beefy to be made from standard lumber. If so, the beam tables will be adequate for sizing but you’ll definitely need at least a 2×10 doubled w/ the half-inch ply sandwich for thickness but that’s not actually looking it up. I built a 3 car garage some years ago with one 16′ door and one 8′ door. Most double 2×12 headers belly out within 10 years with no load on them, just not adequate for the span, drive up and down a subdivision and pay attention to double car garage door headers. So for a 16′ wide door, your beam will have to be 16′ 6 long. Up until about 3 years ago 2×12’s were the norm for upto 18′ OHD spans, since I have seitched over to using LVL’s.
The beam over the garage door opening has a sag (2 car garage). We almost always use lvls for garage headers. Is that a bearing wall and if yes what is the load that header will be supporting? In some cases you will need a larger header then 3.5 X 11.5 header to carry the load over an 18′ span. Glulam is an ideal choice for garage door heders and headers over both large and small window openings. Contains span tables for glulam floor beams in residential construction, tables for substituting glulam for steel beams, and design details.
How To Build Window Headers And Door Headers
This member is a garage door header beam of span 16 feet with no b) Span: Main span is the horizontal distance from bearing point to bearing point, in our. Table R502.5(2).load conditions, clear opening, and span of the trusses or other. Basement girder with a 16foot span 5) garage door header with an 18foot span. Once i determined the loads, Headers & beams size choice tables southern.