Rafter Construction And Roof Framing

While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.

Rafter construction and roof framing.

This will the first point of the rafter measurement line using the results of your rafter length calculation measure from this point along the rafter measurement. The rise or height of the roof at its peak is the altitude of the triangle. With premanufactured trusses or with rafters and ceiling joists commonly called stick framing. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters.

While truss roofs are the most popular construction style today by some estimates truss roofs outnumber stick frame roofs two to one there are regions of the country where builders. This is our ultimate roof rafter guide for people designing and building an off grid cabin or tiny home. How do you figure the length and angles of the cuts on an uneven roof for the hip rafter. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter.

Includes result for hip valley factor slope factor and the roof slope in degrees. The run or half the building span is the base of the triangle. Discover the pros and cons to multiple roof designs. Learn the 1 rafter design that will guarantee your roof that is safe and strong for years to come.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. From one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it measure down y height from the long point of the rafter cut and make a mark. Depending on the roof design and the roof rafter spacing. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.

Billy hope this helps you construction master pro calculator example building is 30 wide main roof 12 12 end cap is 8 12 1. Consult local building codes for snow load capacity and reference the span tables for joists and rafters published by the american wood council awc as a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24. And the line length measurement from the roof peak to the building wall is the hypotenuse. Roof framing rafter layout.

There are two common ways of framing the roof of a house. Building codes such as the icc s 2012 international building code section 2308 10 roof and ceiling framing typically specify that where rafter ties are used they are required at intervals ranging from 12 to 24 o c. Framing a roof is the last step in framing new construction. I have a hip roof with a 12 12 pitch on the main side of the roof while the end is an 18 12 pitch.