Ch2 Size Up

Question 1

COAL WAS WEALTH

Answer 1

Construction
Occupancy
Apparatus and personnel
Life hazard

Water supply
Auxiliary appliances
Street conditions

Weather
Exposures
Area and height
Location and extent of fire
Time
Haz-mat

Question 2

Nearly 80% of all civilian fire deaths occur in ___________ buildings.

Answer 2

Residential

Question 3

A key indicator of the likelihood of structural collapse

Answer 3

Elapsed Burn Time

Question 4

The ONLY two types of construction to which the 20-minute rule applies

Answer 4

Class 3 and Class 5

Question 5

When does the clock start for the 20-minute rule?

Answer 5

When the fire has reached flashover and begun to attack the structural elements

Question 6

Three problematic locations for fire

Answer 6

• Top floor of most Type III and framed structures
• Below grade
• Beyond reach of ladders

Question 7

Often the best way to prevent fire extension

Answer 7

Put out the fire

Question 8

Strategy and tactics should be based on…

Answer 8

Available resources

Question 9

Units used for fuel load

Answer 9

lb/sq ft

Question 10

Btu’s given off by each pound of ordinary combustibles when totally consumed

Answer 10

7,000-10,000 Btu

Question 11

Btu absorbed by one gallon of water when heated from 70 degrees to steam

Answer 11

9,275 Btu

Question 12

Units used for fire flow

Answer 12

Gallons per minute - gpm

Question 13

1 gallon of water will cool how much fuel?

Answer 13

Approximately 5lb

Question 14

Suggested flow rates for residential, commercial, and heavy industrial occupancies

Answer 14

• Residential = 0.15gpm/sq ft
• Commercial = 0.35gpm/sq ft
• Heavy Industrial = 0.5-0.6gpm/sq ft