Title: Lay out a truss installation.
Course: Carpentry III (17003-III) > Section: Installing Trusses

Layout should include

- identifying the truss detail from the plans
- identifying the nail pattern
- determining the position of the centers, accurate to within +/- 1/16 inch (e.g., 12-inch, 16-inch, 19.2-inch, 24-inch centers).

Process/Skill Questions:

- What is the most common spacing of trusses? Why?
- What factors influence the spacing of trusses?

NCCER Carpentry
Adv. Carpentry, Module 27202: Roofing Applications

Covers residential and commercial roofing materials and structures and describes the procedures for installing commercial roofing such as lap seam, standing seam, and built-up roofs.