Building a structural header for a garage door opening can be handled on the jobsite and will offer the same structural support as more expensive solid wood beams.
Wood beam over garage door.
Tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.
The result of this continuous garage door header not being adequately braced led to the wall bowing.
Rarely a steel or iron if very old house beam would be in there but is more common in solid brick or stone construction but unless the lintel is a substantial.
Continuous garage door header.
Window door garage door headers supporting roof wall floor loads.
Multiple span beams such as this continuous garage door header shown in figure 8 can become problematic as the wall between the 2 openings typically isn t sufficient to brace the bottom of the beam.
Window door garage door headers supporting roof loads only.
We always build garage beams with 2x12 s and 1 2 osb usually on a 16foot opening a 2x12 with a 2x6 on top will suffice put a rip of osb in between with plenty of construction adhesive and nails and on the other side reverse the 2 x s 2x12 on top of 2x6 on one side 2x6 on top of 2x12 on the other this will leave you with a beam about 14 3 4 tall enough for a standard 7 garage door on.