Roof Trusses
Course 15

About the course

Understanding how trusses are designed is critical to understanding whether or not they have been manufactured correctly or installed correctly. The parts of a truss are discussed including the top chord, bottom chord, webs, and gussets. Next, the lesson shows how the truss plant engineers a truss using information about the live load, dead load, the truss centers, the span, slope, and type. Types of trusses are reviewed including flat, common gable, gable end, gambrel, scissor, mono, and bowstring. The engineering concepts behind the truss design are covered including the concepts of tension and compression and the impact this has on the size and placement of gussets. The importance of gussets in the truss is discussed. Truss installation concludes the lesson with an emphasis on the bracing that is a critical part of the ability of the truss system to function as designed.

Course 15: Roof Trusses

  • Chapter 1: Facts About Trusses 3:20 (6.7 MB)
  • Chapter 2: Truss Types 2:09 (3.9 MB)
  • Chapter 3: Truss Dynamics 5:41 (12.2 MB)
  • Chapter 4: Installing Gable Trusses 4:54 (12.7 MB)

Related Courses

Course 14: Roof Rafters
Course 16: Finishing the Roof & Sheathing