F80 High-Rise Building Construction and Compartmentalization 2

Question 1

Under NYC Local Law 5 of 1973, non-sprinklered office floors could meet compartmentation requirements by dividing space into areas no larger than:

Accepted Answer

7,500 sq ft

Answer

Local Law 5 allowed compartments of up to 7,500 sq ft enclosed by fire-rated construction as an alternative to sprinklers.

Question 2

Which NYC law required all office buildings 100 feet or taller to be fully sprinklered by July 1, 2019?

Accepted Answer

Local Law 26 of 2004

Answer

Local Law 26 of 2004, passed after 9/11, required full sprinkler protection in high-rise office buildings by 2019.

Question 3

What is the main purpose of firestopping a 'poke-through' in a floor slab?

Accepted Answer

To stop fire and smoke from moving between floors through the opening

Answer

Poke-throughs are utility holes through the slab and must be sealed so fire and smoke cannot travel vertically.

Question 4

In a curtain-wall high-rise, the gap between the floor slab edge and the exterior wall can allow fire to:

Accepted Answer

Spread vertically to the floor above

Answer

An unsealed slab-edge gap lets flames and smoke travel up to the next floor, so it must be filled with perimeter fire safing.

Question 5

A fire damper in an HVAC duct that passes through a fire-rated wall usually closes when:

Accepted Answer

A fusible link melts from heat

Answer

Fire dampers are held open by a fusible link that melts at a set temperature, letting the damper close.

F80 Practice Test