7 Best Of How To Size A Truss Best Images PNG. Bt b tc 6 6 Common--Truss configurations for the most widely designed roof shapes. Dec 09 2018 The typical overhang for residential is between 16 inches and 24 inches.
Measure out 5 to 6 trusses at a time. This will account for possible inconsistencies and ensure that the truss is a proper fit. Divide the length of the roof by two to determine how many trusses are needed.
If the overhang extends beyond 24 inches say to 30 inches then a 26 top chord for the tail section.
This will also affect the length of the rafters. Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16. TCLL 40 psf TCLL 80 psf TCLL 125 psf Truss Spacing Truss Spacing Truss Spacing.