Deck 23: Hip and Valley Framing

Question 1

To calculate the length of a hip rafter, you must know the run of the common rafters in the roof and the ____ of the roof

A) volume
B) density
C) composition
D) unit rise

Answer 1

D

Question 2

Hip rafters run from the corner of the building to the ridge.

Answer 2

True

Question 3

Most roofers also apply a self-adhering ice and water barrier to the valley area before installing the flashing.

Answer 3

True

Question 4

If the overhang is not in even feet, divide the length of common rafter per foot of run on the table by ____.

A) 2
B) 4
C) 6
D) 12

Question 5

Rafter Table for 4/12 Slope
Length of Common Rafters Per Foot of Run
12)65"
Length of Hip or Valley Rafters Per Foot of Run
17)44"
Difference in Length of Jacks @ 16" on Centers
16 7/8"
Difference in Length of Jacks @ 24" on Centers
25 5/16"
Find the length of the tails of the jack rafters in the accompanying figure.

A) 8"
B) 8 3/16"
C) 8 7/16"
D) 8 3/4"

Question 6

The first jack rafter should be a full space (____ inches) from the bottom of the hip or the top of the valley.

A) 4 or 8
B) 8 or 16
C) 16 or 24
D) 24 or 36

Question 7

Rafter Table for 4/12 Slope
Length of Common Rafters Per Foot of Run
12)65"
Length of Hip or Valley Rafters Per Foot of Run
17)44"
Difference in Length of Jacks @ 16" on Centers
16 7/8"
Difference in Length of Jacks @ 24" on Centers
25 5/16"
Find the length of a hip rafter for the roof shown in the accompanying figure.

A) 275 1/2"
B) 277 1/16"
C) 278 5/16"
D) 280"

Question 8

The length of the valley rafters is based on the run of the common rafters that have their upper (ridge) ends at the same level as the valley rafter.

Question 9

The length of hip rafters can be found by using a table found on most framing squares. The ____ line of this table is used to calculate the length of hip rafters.

A) first
B) second
C) third
D) fourth

Question 10

Hip rafters run at a ____ degree angle.

A) 20
B) 30
C) 45
D) 60

Question 11

The line where two pitched roofs meet is called a ____.

A) valley
B) hill
C) ridge
D) rise

Question 12

The length of the valley rafters is based on the run of the ____ rafters that have their upper (ridge) ends at ____ level as the valley rafter.

A) hip; the same
B) hip; a lower
C) common; the same
D) common; a lower

Question 13

The rafter that follows the valley is a ____ rafter.

A) ridge
B) valley
C) jack
D) common

Question 14

Valley rafters always have a tail.

Question 15

Hip jack rafters are lengthened at the top to allow for the thickness of the hip rafter they butt against.

Question 16

The third and fourth lines of the rafter table on most framing squares are used to calculate the length of ____ rafters.

A) hip
B) jack
C) valley
D) common

Question 17

The rafters that butt against the hip rafter are called hip ____ rafters.

A) common
B) roof
C) jack
D) joint

Question 18

The hip rafters are never made of wider lumber than the common rafters and jack rafters.

Question 19

The length of each jack rafter in a roof varies from the length of the one next to it by ____ amount.

A) the same
B) a random
C) a linearly increasing
D) a linearly decreasing

Question 20

The valley rafter is at a ____ degree angle with both ridges.

A) 30
B) 45
C) 60
D) 90

Question 21

If the valley flashing is not wide enough for the ____ of the roof, wind-blown water may be forced under the roof covering and run beneath the flashing.

A) hip jack rafters
B) pitch
C) beams
D) valley jack rafters

Question 22

Find the length of valley jack rafter D in the accompanying figure.

A) 23 1/2"
B) 24 1/2"
C) 25 1/4"
D) 26 1/2"

Question 23

Find the length of hip jack rafter C in the accompanying figure.

A) 81 1/16"
B) 82 3/16"
C) 83 5/16"
D) 84 5/16"

Question 24

For example, if a roof has a 6 in 12 slope and the roof framing is 16 inches OC, the difference in the length of jack rafters is _________ inches.

A) 17 1/8"
B) 16 1/8"
C) 18 1/8"
D) 17 1/4"

Question 25

Find the length of hip jack rafter B in the accompanying figure.

A) 57"
B) 58"
C) 59"
D) 60"

Question 26

Find the length of valley jack rafter E in the accompanying figure.

A) 48 7/16"
B) 48 9/16"
C) 48 11/16"
D) 48 13/16"

Question 27

Find the length of hip jack rafter A in the accompanying figure.

A) 32 1/16"
B) 32 1/8"
C) 32 1/4"
D) 32 1/2"