Construction Carpentry and Wood Framing 3

Question 1

What is the standard thickness of plywood or OSB sheathing used for residential wall sheathing?

Accepted Answer

7/16 to 1/2 inch

Answer

1/4 inch

Answer

3/8 inch

Answer

5/8 inch

Question 2

In stair framing, what is the 'rise' and 'run'?

Accepted Answer

Rise is the vertical height of each step; run is the horizontal depth of each tread

Answer

Rise is the horizontal depth of the tread; run is the vertical height of the riser

Answer

Rise is total stair height; run is total stair length

Answer

Rise is the stair angle; run is the stringer length

Question 3

What is the purpose of 'fire blocking' in wall assemblies per the International Residential Code?

Accepted Answer

To slow the spread of fire through concealed stud cavities and wall spaces

Answer

To provide thermal insulation

Answer

To add structural rigidity to walls

Answer

To provide a nailing surface for drywall

Question 4

What is 'engineered lumber' in construction framing?

Accepted Answer

Manufactured wood products like LVL, PSL, and I-joists engineered for specific structural applications

Answer

Lumber graded by a licensed engineer

Answer

Reclaimed lumber repurposed for framing

Answer

Pressure-treated lumber for ground contact

Question 5

What is the purpose of a 'double top plate' in wood-frame wall construction?

Accepted Answer

To tie adjacent wall sections together and transfer loads, enabling roof/floor framing to land on wall intersections

Answer

To provide a decorative molding profile

Answer

To double the wall height capacity

Answer

To create a space for electrical wiring

Question 6

Which type of wood joint uses a toothed metal plate connector pressed into both wood members at a truss joint?

Accepted Answer

Truss plate (Gang-nail plate)

Answer

Mortise and tenon

Answer

Lap joint

Answer

Pocket screw joint