Chapter 8 - Wood-frame Construction

Question 1

Lumber that is 8 in or more in its smallest dimension.

Answer 1

Heavy timber. (205)

Question 2

What type of walls do post and frame buildings have?

Answer 2

Not structural or load-bearing. (206)

Question 3

In what type of building do the studs run two or more stories high from the foundation to the eve line?

Answer 3

Balloon frame. (207)

Question 4

Who are often the culprits for starting fires in the walls of balloon frame buildings?

Answer 4

Plumbers. (208)

Question 5

Where is the worst place for a fire to start in a balloon frame building

Answer 5

The basement.

Question 6

What is the one common vertical means of fire spread in balloon frame and platform frame buildings?

Answer 6

The open stairwell.

Question 7

What construction feature converts a platform frame into a balloon frame building

Answer 7

A soffit.

Question 8

What type of construction has the positive benefit of reducing the volume of concealed space in which fire can burn

Answer 8

Plank and beam

Question 9

What are trusses most often used as?

Answer 9

Beams.

Question 10

Gusset plates contain a series of small teeth what size

Answer 10

3/8”

Question 11

During a fire the presence of truss floors may be disclosed how

Answer 11

Smoke or Fire pushing through the wall at the floor line

Exterior sheathing plays a critical role in whether this effect is visible

Question 12

Any exposure in which the product of concentration is _____ is likely to be dangerous

Answer 12

33,000

Question 13

A 10 minute exposure to how much CO WOULD BE HAZARDOUS AND POSSIBLY INCAPACITATING

Answer 13

3500 ppm

Question 14

How much PPM can be fatal after a few breaths

Answer 14

12,500

Question 15

What is the flammability range of CO

Answer 15

12.5 to 74 percent.

Question 16

What is the ignition temperature of CO

Answer 16

1128° F

Question 17

What two areas in lightweight wood frame structures are not protected by sprinklers

Answer 17

Unoccupied attics
Floor void spaces

Question 18

What three spaces are not protected by sprinkler systems

Answer 18

Bathrooms under 55 ft square
Closets under 24 ft square
Balconies

Question 19

Wooden I-beams have shown failure and how many minutes

Answer 19

6 minutes

Question 20

What can be considered the most dangerous of all structural members to firefighters? (2)

Answer 20

Wooden I-joists
Lightweight wood trusses

Question 21

What are considered truly disposable buildings

Answer 21

Truss frame

Question 22

What is the major problem of combustible construction

Answer 22

Fire spread through hidden voids.

Question 23

Firestops typically limit what type of movement

Answer 23

Vertical movement through relatively small concealed passages.

Question 24

Draft stops limit what type of movement

Answer 24

Horizontal movement through large concealed passages.

Question 25

What are the two types of firestopping

Answer 25

Inherent and legal

Question 26

In wood platform frame structures what provides inherent firestopping

Answer 26

Sole plate.

Question 27

What is the recommended location for firestopping in multiple unit dwellings?

Answer 27

Along the tenant separations.

Question 28

Wood cannot be made what?

Answer 28

Fireproof or non-combustible

Question 29

What stress is plywood resistant to

Answer 29

Shear

Question 30

What readily extends fire vertically?

Answer 30

All combustible siding.

Question 31

What type of shingles explode when heated

Answer 31

Asbestos

Question 32

What type of siding has no fire resistance value

Answer 32

Asphalt felt siding.

Question 33

In a bearing wall headers can be seen on which row

Answer 33

7th

Question 34

What hazard should be the dominant consideration with regards to wood shingles

Answer 34

Conflagration

Question 35

In newer construction which is stronger the floor or the roof?

Answer 35

The floor.

Question 36

OSB loses its structural strength and fails when it becomes saturated with what

Answer 36

Water

Question 37

What is an indicator of a balloon frame home

Answer 37

Tall narrow windows

Question 38

If a fire starts in the basement you need to quickly check where

Answer 38

The attic

Question 39

What is the safest and most effective way to attack a fire in a balloon frame structure

Answer 39

Removing the exterior siding

Question 40

In a wall fire the attic is considered what

Answer 40

An extension of the wall

Question 41

If a fire is large enough to require a blitz attack what is the rescue profile percentage

Answer 41

0

Question 42

What is the major problem with combustible construction

Answer 42

Fire spread through hidden voids