CRC Building Codes & Standards 3

Question 1

Which organization publishes the National Electrical Code (NEC) that is referenced by most state building codes for residential wiring?

Accepted Answer

National Fire Protection Association (NFPA)

Answer

The National Fire Protection Association (NFPA) publishes NFPA 70, commonly known as the National Electrical Code (NEC).

Question 2

Under the IRC, what is the required minimum distance between a gas range and combustible overhead cabinetry?

Accepted Answer

30 inches

Answer

The IRC and most appliance manufacturers require a minimum of 30 inches between the cooking surface and combustible overhead cabinets.

Question 3

When is a building permit NOT typically required for residential work under model code provisions?

Accepted Answer

Replacing like-for-like windows in existing frames

Answer

Most jurisdictions exempt like-for-like window replacements in existing frames from permit requirements as ordinary repair and maintenance.

Question 4

Under the IRC, what is the maximum height of a handrail above the stair nosing?

Accepted Answer

38 inches

Answer

IRC Section R311.7.8.1 requires handrails to be between 34 and 38 inches above stair nosings, so the maximum is 38 inches.

Question 5

Which of the following best describes the purpose of a Certificate of Occupancy (CO)?

Accepted Answer

It confirms the building complies with applicable codes and is safe for occupancy

Answer

A Certificate of Occupancy is issued by the local building department confirming that a structure meets code requirements and is safe to occupy.

(CRC) Certified Residential Contractor Practice Test