But double-check your layout with diagonal measurements before ... Measure the distance at the center of the pergola from front to back at the top of the headers. Cut the 2x10 ridge beam (F) to this ...
The final beams raised into place were signed by members of the construction team at California Science Center.
We wanted to keep it simple and efficient, so we built double 2x4 walls ... and then attached a Laminated Veneer Lumber (LVL) beam to the front posts to support the three-foot overhang, and a 2x10 ...