It's easy. A truss designer uses software that creates two giant girder trusses that allow for a full-sized staircase up into the new attic space.

Photo R262 - Truss roofs can be complex and create the hazard of massive collapse from a ONE POINT FAILURE. A heavy truss girder (a girder is a beam which supports other beams) supports a large ...

Calvin College's Van Noord Arena will take an impressive step forward in its construction process over the next two weeks when the two main girder trusses for the arena roof are erected. On Monday, ...