74 Part C
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Framing
PROBLEMS FOR CHAPTER 6
P6.1. The common rafters on a particular structure have a 5-1/2⬙ pitch
and a run of 13⬘-4⬙. Find the rise, length, plumb and level cut
angles for these rafters.
P6.2. For common rafters having a rise of 8⬘-5⬙ and a run of 15⬘-3⬙,
determine the pitch (in inches and degrees), length, plumb and
level cut angles.
P6.3. Common rafters on a shed roof have a 4⬙ pitch and a rise of 3⬘-8⬙.
Calculate the run, length, plumb and level cut angles for these
rafters.
P6.4. A conventional roof has two sections containing common rafters
with a 6⬙ pitch and 15⬘-9⬙ run. For these common rafters, find the
pitch (in degrees), length, plumb and level cut angles. Also
determine the length; plumb, level, and cheek cut angles for hip
and valley rafters used to join the two roof sections.
P6.5. For the roof of problem P6.4, calculate all hip jack lengths for a
spacing of 16⬙ o.c. . Repeat for 24⬙ o.c. .
P6.6. A conventional roof has a 12⬙ pitch and an 8⬘ run. Calculate the
pitch (in inches), length, plumb and level cut angles for all
hip/valley rafters used on this roof.
P6.7. For the roof of problem P6.6, find the lengths of all jacks at a
spacing of 24⬙ o.c. .
P6.8. An irregular roof contains one section whose common rafters have
a 5⬙ pitch and a run of 11⬘-8⬙, and another section having a pitch of
6-1/2⬙. Find the length, plumb, level and cheek cut angles for all
regular and irregular jacks to be used on this roof if their spacing is
24⬙ o.c. throughout.
P6.9. A rake wall with no base has a 4⬘-6⬙ rise and a 14⬘-0⬙ run. Find the
lengths of all rake-wall studs at 24⬙ o.c., as well as the cheek angle
to be cut at the top of each stud.
P6.10. A rake wall with an 8⬘-4⬙ base has a 5-1/2⬙ pitch and a run of
9⬘-10⬙. Determine the rake-wall stud lengths at 16⬙ o.c., and the
cheek cut angle for these studs.
Notes
Construction Master® Pro Workbook and Study Guide
Copyright © 2007 by Calculated Industries, Inc.
and Thomson Delmar Learning
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