Title: Install collar beams.
Course: Building Trades II (17009-II) > Section: CARPENTRY: Framing a Roof

Installation requires

- cutting the collar tie to length within +/- 1/16 inch
- cutting the collar tie to angle within +/- 1 degree
- positioning
- installing according to specifications.

IRC: Chapter 8 specifically defines the differences among a ceiling joist, rafter, collar tie, and a rafter tie, along with details about the specific use and limits on the components. The attachment of each of these materials is based on the location of a specific nailing. More details are found in table R602.3 (1).

Process/Skill Questions:

- What purpose do collar beams serve?
- What could happen if collar beams were not installed?