OBJECTIVES:

After completing this unit. you will be able to list the different roof types and identify the roof framing terms that are required to calculate rafter lengths and angles.

• ​ shed roofs

• gable roofs

• hip roofs

• intersecting roofs

• roof framing terms

OBJECTIVES:

After completing this unit. you will be able to calculate the line length of the common rafter for the Gable Roof using the unit roof triangle and Pythagoras' Theorem. You will also be able to mark the layout of the rafter on a piece of stock using the speed square and the Framing Square.

• components, stock sizes

• line lengths vs. actual lengths

• roof slopes - ratios & angles

• birdsmouths & tails

• calculations: lengths & angles

OBJECTIVES:

After completing this unit. you will be able to calculate the line lengths of the hip rafter and the hip jack rafter using the tables found on the Framing Square. You will also be able to mark the layout of the rafters on a piece of stock using the speed square and the Framing Square.

• components, stock sizes

• line lengths vs. actual lengths

• roof slopes - ratios & angles

• birdsmouths & tails

• calculations: lengths & angles