ICC System Architecture and Design 3

Question 1

Under the IBC, which construction type requires all structural members, including floors and roofs, to be of noncombustible materials with specific fire-resistance ratings for columns and beams?

Accepted Answer

Type I-A

Answer

Type I-A construction requires all structural elements to be noncombustible with the highest fire-resistance ratings (3 hours for columns/beams, 2 hours for floors).

Question 2

What is the primary purpose of a building's 'diaphragm' in lateral force resistance system design?

Accepted Answer

To collect and transfer lateral forces to vertical resisting elements

Answer

A diaphragm (floor or roof system) collects lateral forces from wind or seismic events and transfers them horizontally to shear walls or braced frames.

Question 3

According to IBC Section 403, which of the following is NOT a required system in high-rise buildings?

Accepted Answer

Smoke control system for all floors

Answer

IBC Section 403 requires sprinklers, emergency voice/alarm, and standby power in high-rises, but does not mandate a smoke control system for all floors in every high-rise.

Question 4

In IBC mixed-occupancy design using the 'separated occupancies' method, fire barriers between occupancies must meet what minimum rating requirement?

Accepted Answer

The rating specified in IBC Table 508.4 for the occupancy pair

Answer

IBC Table 508.4 specifies the required fire barrier rating between each pair of separated occupancies, which varies based on the specific combination.

Question 5

What structural concept does 'redundancy' refer to in seismic design of building systems?

Accepted Answer

Having multiple lateral force-resisting elements so failure of one does not cause collapse

Answer

Structural redundancy means designing multiple lateral load-resisting elements so that if one fails, the system can redistribute loads without progressive collapse.

(ICC) International Code Council Practice Test

(ICC) International Code Council Practice Test

ICC System Architecture and Design 3