Deck 12: Roof Framing

Question 1

A ____ is the sloping structural member of a roof frame.

A) ridge
B) rafter
C) joist
D) stud

Answer 1

B

Question 2

Gable studs have a common difference in length.

Answer 2

True

Question 3

If the unit rise is 6 inches and the unit run is always 12 inches, then the unit length is ____ inches.

A) 12
B) 13.42
C) 15
D) 18

Answer 3

B

Question 4

Wood I-beams may not be used for rafters.

Question 5

Because the hip rafter run is at a ____-degree angle from the plates, the amount of horizontal distance it covers (total run) is greater than that of the common rafter.

A) 30
B) 45
C) 60
D) 75

Question 6

The total ____ is the total vertical distance that a roof rises.

A) run
B) span
C) rise
D) line length

Question 7

The butterfly roof is an inverted gable roof.

Question 8

The most common roof style is the ____ roof where two sloping roof surfaces meet at the top.

A) gable
B) shed
C) hip
D) intersecting

Question 9

Projection is the horizontal distance under the overhang.

Question 10

The carpenter can at any time cut or remove the chords, braces, or webs of a truss system.

Question 11

The triangular areas formed by rake rafters and wall plate at the ends of a building are called ____.

A) fields
B) boundary plates
C) cross-sections
D) gables

Question 12

The ____ cut is the cut at the lower end of a rafter.

A) wild
B) tail
C) final
D) common

Question 13

If an overhang is specified at the rakes, horizontal structural members called ____ must be installed.

A) web stiffeners
B) wall plates
C) lookouts
D) headers

Question 14

The shed roof slopes in only one direction.

Question 15

Step-off method for laying out rafters is the fastest and most accurate method.

Question 16

The ridge cut of a hip rafter is a compound angle called a(n) ____ cut.

A) end
B) bevel
C) cheek
D) tail

Question 17

Span of a building is the same as the run of the building.

Question 18

The ____ is the ratio of rise to span of a roof.

A) plumb line
B) level line
C) yaw
D) pitch

Question 19

The mansard roof is a combination of the gambrel and hip roofs.

Question 20

Valley rafters are more similar than they are different to hip rafters..

Question 21

____ are smaller roof members that actually support the roofing materials yet are themselves supported by other main rafters or trusses.

A) Struts
B) Purlins
C) End braces
D) Eaves

Question 22

A roof truss consists of upper and lower ____ and diagonals called web members.

A) joists
B) rafters
C) chords
D) arcs

Question 23

Temporary bracing for trusses should be no less than 2 *4 lumber, with a minimum length of ____ feet.

A) 8
B) 16
C) 24
D) 36

Question 24

The length of the hip roof ____ is found by subtracting the width of the building from the length of the building.

A) ridgeboard
B) rafter
C) backing
D) plate

Question 25

____ rafters form the intersection of the slopes of two roofs.

A) Common
B) Bridge
C) Ridge
D) Valley

Question 26

The unit of run for both hip rafters and valley rafters is ____ inches.

A) 12
B) 16.97
C) 18.44
D) 24

Question 27

____ provides rigidity to the roof frame and a nailing base for the roof covering.

A) Bracing
B) Buttressing
C) Sheathing
D) Reinforcing

Question 28

The amount of rafter shortening is always measured at ____ degree angles to the plumb cut.

A) 45
B) 60
C) 90
D) 135

Question 29

To estimate the number of ____ needed in a roof construction, divide the width of the building by the OC (on center) spacing and add two.

A) gable ridgeboards
B) gable roof fascia
C) common rafters
D) gable end studs

Question 30

Usually, __________ have either gable or shed roofs.

A) extensions
B) gambrels
C) channels
D) dormers