CFB Building Codes & Standards 3

Question 1

According to the IBC, a building's 'occupancy classification' is primarily determined by:

Accepted Answer

The intended use of the space

Answer

Occupancy classification under the IBC is based on the intended use or character of occupancy of a building or space.

Question 2

What is the maximum stair riser height permitted by the IRC for residential stairs?

Accepted Answer

7.75 inches

Answer

The IRC limits residential stair riser height to a maximum of 7-3/4 inches (7.75 inches) to ensure safe step height.

Question 3

Which standard defines fire-resistance ratings for building assemblies through standardized testing?

Accepted Answer

ASTM E119

Answer

ASTM E119 is the standard test method for fire tests of building construction and materials, used to determine fire-resistance ratings.

Question 4

Under IBC Table 601, Type V-B construction allows wood framing with what fire-resistance rating for exterior bearing walls?

Accepted Answer

0 hours

Answer

IBC Type V-B (unprotected) construction requires 0-hour fire-resistance ratings for all structural elements including exterior bearing walls.

Question 5

A CFB must verify anchor bolt placement before a slab pour. What is the minimum embedment depth for a standard 1/2-inch anchor bolt per the IRC?

Accepted Answer

7 inches

Answer

The IRC requires a minimum embedment of 7 inches for anchor bolts connecting sill plates to concrete or masonry foundations.

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