Identify floor joists and alternative floor systems.

Identification should include

• the definition of cutting
• types of floor systems (e.g., floor trusses, I-joists, metal floor systems)
• components of floor systems
• the parts of a floor joist with engineered lumber
• the function of the floor joists
• the location of the floor joists, once they are installed
• the crown on floor joists
• the building code reference for the use or installation requirements of floor joists.

Process/Skill Questions:

• What is a crown?
• What is the difference between a bow and a crown?
• What are the consequences of improper installation?
• What are floor trusses?
• What is an I-joist?
• Why is steel a good alternative floor system?

NCCER Carpentry Standards

Level One, Module Five (27105-13): Floor Systems

Module Five (27105-13) describes the layout and construction procedures for floor systems, including how to read and interpret construction drawings and specifications, and how to identify different types of framing systems, floor system components, and floor system materials. It also covers how to estimate the amount of materials needed for a floor assembly and on some common alternative floor systems.