FSD Building Codes & Safety Standards 4

Question 1

What is the maximum allowable leakage class for a smoke damper used in a smoke control system per UL 555S?

Accepted Answer

Class III

Answer

UL 555S leakage classes rate dampers as Class I (lowest leakage), II, or III (highest leakage); Class III is the maximum permitted for smoke control applications.

Question 2

Under the IBC, which of the following is NOT a recognized alternative to installing a fire damper at a duct penetration of a fire barrier?

Accepted Answer

Using a corridor that is not a rated assembly

Answer

Using an unrated corridor does not serve as a code-recognized alternative to a fire damper at a rated fire barrier penetration.

Question 3

ASHRAE 62.1 affects fire and smoke damper design primarily by establishing requirements for:

Accepted Answer

Outdoor air ventilation rates that influence duct sizing and damper placement

Answer

ASHRAE 62.1 sets minimum ventilation rates that drive duct design, indirectly influencing where fire and smoke dampers must be located.

Question 4

What does the term 'smoke compartment' mean in the context of NFPA 101?

Accepted Answer

A space enclosed by smoke barriers on all sides including floor and ceiling

Answer

A smoke compartment under NFPA 101 is a space enclosed on all sides — including top and bottom — by smoke barriers designed to limit smoke spread.

Question 5

According to IMC, when must a fire damper be provided at a duct penetration of a shaft enclosure?

Accepted Answer

When the shaft enclosure has a fire-resistance rating of 2 hours or more

Answer

The IMC requires fire dampers at duct penetrations of shaft enclosures that have a 2-hour or greater fire-resistance rating.

(FSD) Fire and Smoke Damper Certification Practice Test

(FSD) Fire and Smoke Damper Certification Practice Test

FSD Building Codes & Safety Standards 4