Fire Retardant Materials and Practices

Question 1

Main difference in safety requirements between Commercial and Residential

Answer 1

Standards of safety are revised upwards in commercial and industrial applications

Question 2

What kills people faster in a fire then fire itself.? What prevents this from happening more

Answer 2

Smoke kills faster because of the chemicals in the materials burning

Many people are killed by fumes before getting out

Building and fire codes have evolved to reflect this fact

Question 3

What is a Firewall?

Answer 3

Structural wall that has an upgraded design (Non combustibles) to resist fire.

Subdivides a building or buildings to resist fire spread

Must follow National Building code

All firewalls are to be of masonry construction

Question 4

What is a Fire Separation?

Answer 4

Special assembly that contains and compartmentalizes fire in a public building.

Acts as a barrier against the spread of a fire

Question 5

What is a Fire Resistant Rating?

Answer 5

The duration an assembly will withstand direct flame without disintegrating.

Question 6

Examples of Closures

Answer 6

Door
Shutter
Wired glass
Glass Block

Question 7

Wood doors without a label may meet the requirements for a Closure T or F

Answer 7

F

Question 8

Does the installation of an elephant or a wedge on a door comply with the National Fire Code?

Answer 8

No it does not the door must be able to close after each use

Question 9

Clearence for a Fire Rated Door?

Answer 9

No more then 1/8 (3.81mm) on the meeting edges

3/8 (9.5) - 3/4 (19mm) of clearance to the Sill

Question 10

How does a magnetic Approved Hold-Open Device work?

Answer 10

Magnetic device is connected to the Fire system

When the fire alarm is active the magnet will let go and the doors will shut

Question 11

What is a Fusible Link?

Answer 11

Two pieces of metal soldered together by a mixture of Lead and Tin

The GREATER the amount of Tin the longer the delay of the closure.

Question 12

What is Flame Spread Rating (FSR)

Answer 12

A Number and Classification assigned to a material

Indicates the relative speed that a flame must travels on the surface of coating of the material.

Determined by standardized testing methods.

Question 13

How long in time is a Flame spread rating test conducted for?

Answer 13

The common test period is 10 minutes.

Question 14

Which FSR Class is the worst for Flammable Spread?

Answer 14

Class E

Question 15

Rating for a Class E FSR

Answer 15

500 and over

Question 16

Example of a Class E FSR?

Answer 16

Carpet

Question 17

How does Intumescent insulation work in a fire?

Answer 17

The coating swells forming a thick insulated layer.

Delays the spread of flame and transmission of heat to the protected surface.