Layout should include
- identifying the truss detail
- identifying the nail pattern
- determining the position of centers (e.g., 12 inch, 16 inch, 19.2 inch, 24 inch) from details, accurate to within +/- 1/16 inch.
Process/Skill Questions:
- What is the most common spacing of trusses? Why?
- What factors influence the spacing of trusses?
NCCER Carpentry Standards
Level Two, Module Five (27202-13): Roofing Applications
Module Five (27202-13) describes how to properly prepare the roof deck and install roofing for residential and commercial buildings.