Ceiling Framing

Question 1

What is the main purpose of ceiling joist?

Answer 1

Tie the exterior walls together

Question 2

Identify three ways in which ceiling joist can meet on top of an interior bearing wall?

Answer 2

• Butted and cleated together
• Lapped
• Lapped with blocking between them that is the same thickness as the rafters

Question 3

How is joist layout affected when joist are lapped over an interior wall?

Answer 3

The layout on one exterior wall will be offset by the thickness of the ceiling joist

Question 4

What must be done to the outside ends of ceiling joist?

Answer 4

An angled cut that matches the roof slope

Question 5

What are stub joist?

Answer 5

They are short ceiling joist that run 90 degrees to the regular joist

Question 6

According to the national building code, what is the minimum size of an attic access required for a single family home?

Answer 6

0.32 m2 with no dimensions less than 500mm (20”)

Question 7

What must be done to the joist if an opening in the ceiling is wider than two joist spacings?

Answer 7

Must be doubled up on either side

Question 8

Where would a flush beam be required?

Answer 8

Is required in an area in which no interior bearing wall is available to support ceiling joist and the width of the building exceeds the maximum allowable span of the joist