CRC Building Codes & Regulations 2

Question 1

Under the International Residential Code (IRC), what is the minimum ceiling height required for habitable rooms?

Accepted Answer

7 feet 0 inches

Answer

The IRC requires a minimum ceiling height of 7 feet 0 inches for habitable rooms.

Question 2

Which document serves as the basis for most residential building codes adopted across the United States?

Accepted Answer

International Residential Code (IRC)

Answer

The IRC, published by the International Code Council (ICC), is the model code most widely adopted by states and municipalities for one- and two-family dwellings.

Question 3

A residential contractor is building a deck that is 30 inches above grade. Under the IRC, is a guardrail required?

Accepted Answer

Yes, guardrails are required at 30 inches or more above grade

Answer

The IRC requires guardrails on decks and elevated surfaces 30 inches or more above the grade below.

Question 4

What is the purpose of a Certificate of Occupancy (CO)?

Accepted Answer

It confirms the building meets code and is safe to occupy

Answer

A Certificate of Occupancy is issued by the local authority having jurisdiction to confirm a structure complies with applicable codes and is safe for use.

Question 5

Under the IRC, what is the maximum rise (height) allowed for a single stair riser in a residential application?

Accepted Answer

7¾ inches

Answer

The IRC limits stair riser height to a maximum of 7¾ inches for residential construction.

(CRC) Certified Residential Contractor Practice Test

(CRC) Certified Residential Contractor Practice Test

CRC Building Codes & Regulations 2