General Contractor License Materials and Methods of Construction

Question 1

What is the standard compressive strength (f'c) of normal-weight concrete used in residential foundations?

Accepted Answer

3,000 psi

Answer

1,500 psi

Answer

2,500 psi

Answer

5,000 psi

Question 2

Which lumber grade designation indicates the highest structural quality for dimensional framing lumber?

Accepted Answer

Select Structural

Answer

No. 2

Answer

No. 1

Answer

Construction Grade

Question 3

What does the designation 'W8x31' refer to in structural steel?

Accepted Answer

A wide-flange beam 8 inches deep weighing 31 pounds per linear foot

Answer

A weld specification requiring 8 passes at 31 amps

Answer

An 8-inch wide plate that is 31 feet long

Answer

A wire rope with 8 strands and a 31-ton load rating

Question 4

Which mortar type is recommended for load-bearing exterior masonry walls in moderate climates?

Accepted Answer

Type N

Answer

Type K

Answer

Type S

Answer

Type M

Question 5

What is the primary purpose of a vapor retarder installed in a wall assembly?

Accepted Answer

To limit moisture migration into the building envelope

Answer

To increase the fire resistance rating

Answer

To provide additional thermal insulation

Answer

To act as a sound barrier between wall cavities

Question 6

What is the minimum rebar cover required for concrete in direct contact with the earth (cast against earth)?

Accepted Answer

3 inches

Answer

1 inch

Answer

1.5 inches

Answer

2 inches

Question 7

Which roofing underlayment is classified as a self-adhering membrane often used in ice and water shield applications?

Accepted Answer

Rubberized asphalt membrane

Answer

15-lb felt paper

Answer

30-lb felt paper

Answer

Synthetic polypropylene sheet