Which of the following requires a double cheek cut at the ridge end?

Which of the following requires a double cheek cut at the ridge end?
 
  A) Projection ridge
  B) End common rafter
  C) Hip jack
  D) Hip rafter

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[Ques. 2] The purpose of venting in a roof is to _____.
 
  A) allow heat and moisture to escape the building
  B) allow cold air to enter the building
  C) add moisture to the warm air rising from the floors below
  D) allow cold air to escape the building to make room for warm air

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[Ques. 3] When collar beams (ties) are needed to brace rafters, they are installed on _____ rafter.
 
  A) every
  B) every other
  C) every third
  D) every fourth

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[Ques. 4] In order to obtain the correct length for a common rafter, it is necessary to _____.
 
  A) subtract the width of the birds mouth
  B) subtract half the thickness of the ridgeboard
  C) subtract half the thickness of the rafter
  D) add half the thickness of the ridgeboard

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[Ques. 5] The length of a common rafter for a roof with a span of 30 and a rise of 10 is _____.
 
  A) 15-3
  B) 16-5
  C) 18-0
  D) 22-6