Girder and valley truss system

Buildings with intersecting ridge lines can be framed as shown below. Valley trusses are supported on top of the common trusses to form the intersecting ridge. If a clear span opening is required where the roofs intersect, a girder truss can be used to support the valley trusses and common trusses at the intersection. The girder trusses usually are specially made with heavier chords and plates and can consist of a number of trusses laminated with nails or bolts.