Ceiling and Roof Truss Components Quiz

The main horizontal structural member supporting the ceiling is called the __________. (Subsection: Ceiling Joists)

• joist

• beam

• rafter

• girder

Ceiling joists are typically spaced __________ inches apart. (Subsection: Ceiling Joists)

• 16

• 24

• 12

• 18

The purpose of the ceiling joist is to prevent the __________ from spreading. (Subsection: Purpose of Ceiling Components)

• walls

• roof

• floor

• foundation

The __________ is the top member of a roof truss that supports the roofing material. (Subsection: Roof Truss Components)

• top chord

• bottom chord

• web member

• gusset plate

The __________ runs between the top and bottom chords of a roof truss to provide structural support. (Subsection: Web Members)

• web

• beam

• column

• joist

The bottom chord of a roof truss functions as the __________ joist in a building.

• ceiling

• floor

• roof

• wall

The __________ board is the horizontal member at the peak of a roof to which rafters are attached.

• Ridge

• Base

• Side

• Top

__________ rafters run perpendicular to the ridge board and support the roof deck.

• Common

• Hip

• Valley

• Jack

A __________ roof slopes down on two sides from a central ridge.

• Gable

• Flat

• Shed

• Hip

The __________ is the rise of the roof for every 12 inches of run.

• Pitch

• Slope

• Angle

• Gradient