M5 Floor Systems Trade Terms 35

Written document included with a set of prints that clarifies information presented on the prints and provides additional information not easily presented on the prints.

• Scab

• Span

• Specifications

• Squash Block

Short joists that run from an opening to a bearing.

• Floor Joists

• Rim Joist

• Tail Joists

• Trimmer Joists

Consist of a vertical web with flanges bonded to the top and bottom. The webs are made of OSB or plywood and the flanges are grooved to fit over the web.

• Floor Joists

• I-Joists

• Trimmer Joists

• Trimmer Joists

A series of parallel, horizontal framing members that make up the body of the floor frame.

• Floor Joists

• Rim Joist

• Tail Joists

• Trimmer Joists

A framing member that surrounds the outer edge of the joist and stabilizes the floor system.

• Floor Joists

• Rim Joist

• Tail Joists

• Trimmer Joists

Full-length joists that reinforce a rough opening in the floor.

• Floor Joists

• Rim Joist

• Tail Joists

• Trimmer Joists

The first and last joists in a floor system; they run parallel to the floor joists.

• End Joists

• I-Joists

• Tail Joists

• Rim Joist

Used to frame floor openings and run perpendicular to the direction of the joists. _______ are doubled when the span exceeds 4'.

• Floor Trusses

• Headers

• Single-Layer Floor System

• Two-Layer Floor System

Floor system in which a layer of underlayment is installed over a layer of subfloor.

• Floor Trusses

• Headers

• Single-Layer Floor System

• Two-Layer Floor System

Combined subfloor and underlayment; typically installed where direct application of carpet or tile to the floor is intended.

• Single-Layer Floor System

• Headers

• Squash Block

• Two-Layer Floor System