Chap 7 Sloping Peaked Roofs Collapse

Question 0

Gable roof

Answer 0

Has sides sloping up from 2 walls

Question 1

The collapse hazards of sloping peaked roofs are

Answer 1

The roof structural framing
The roof deck
The slate or told roof shingles

Question 2

Hip roof

Answer 2

Has sides sloping up from 4 walls

Question 3

The gambrel roof

Answer 3

Has 2 slopes on each of two sides with a lower slope steeper than the upper slope

Question 4

Mansard roof

Answer 4

Has 2 slopes on all four sides with a lower slope steeper than the upper slope

Question 5

Collar beams are

Answer 5

Used to tie opposing sloping roof rafters together and help resist the outward thrust of the roof rafters at the eaves

Question 6

Primary structural member

Answer 6

Primary structural member is a structure that supports another structural member whose collapse may lead to the failure part of the building

Question 7

Wood floors the primary structural members are

Answer 7

Header and trimmer beams

Question 8

In sloping roof s the primary structural members are

Answer 8

Ridge rafters
Hip rafters
Bearing walls

Question 9

Flat roofs have two primary structural members

Answer 9

The two bearing walls

Question 10

Gable roofs have 3 primary structural members

Answer 10

The 2 bearing walls and 1 ridge rafter

Question 11

Hip roofs have 9 primary structural members

Answer 11

4 bearing walls
One ridge rafter
4 hip rafters

Question 12

If structural supports on roofs. Are close together

Answer 12

A spongy feeling of the roof deck will indicate char or fire weakening

Roof or floor has structural members spaced several feet apart this will create a springboard effect

Question 13

Which roof has the largest unsupported roof deck

Answer 13

Truss roof

Question 14

The stability of a sloping truss roof depends upon

Answer 14

The number of purlins running perpendicular to the truss

Spacing of the trusses

Question 15

3 most common types of wood construction used for sloping roofs are

Answer 15

Timber truss most amount of unsupported beams
Plank and beam
Rafter construction least amount of unsupported beams

Question 16

Rafter roof

Answer 16

Safest sloping roof to walk on

Question 17

Roof rotting is often found on sloping roofs ..Where

Answer 17

Roof edges
Roofs change slope
Where sloping roofs abuts a vertical plane

Question 18

According to DUNN , what determines the stability of the roof deck during a fire

Answer 18

The roof supports

Question 19

According to Dunn all departments should develop sop for operating on sloping roofs . These should be based upon

Answer 19

1. Life safety
2. Fire confinement
3. Property protection