NCCER Basic Carpentry & Framing 3

Question 1

What is the purpose of a let-in brace in platform framing?

Accepted Answer

To provide diagonal racking resistance in a wall

Answer

A let-in brace is a diagonal board notched into the face of studs to resist lateral racking forces on a wall.

Question 2

The actual dimension of a 2x4 piece of lumber is:

Accepted Answer

1-1/2 inches by 3-1/2 inches

Answer

A nominal 2x4 actually measures 1-1/2 inches by 3-1/2 inches after milling and drying.

Question 3

When framing an interior non-load-bearing partition wall, the minimum stud size typically required is:

Accepted Answer

2x3

Answer

Non-load-bearing interior partitions can use 2x3 studs, though 2x4 is more common for stability and utility chases.

Question 4

A carpenter uses a speed square to mark a rafter. The 'rise' number on the speed square represents:

Accepted Answer

The vertical rise per 12 inches of horizontal run

Answer

The rise number on a speed square indicates the vertical rise in inches for every 12 inches of horizontal run, defining the roof pitch.

Question 5

What is the purpose of blocking installed between floor joists?

Accepted Answer

To prevent joist rotation and provide lateral stability

Answer

Blocking between joists prevents rotation (twisting) and provides lateral bracing, improving the structural performance of the floor system.

(NCCER) National Center for Construction Education and Research Certified Handyman Practice Test