Roof Rafter Framing Details

Collar ties rafter ties tension beams structural ridge beams.

Roof rafter framing details.

Span is the horizontal distance between the outside. Chimneys are typically built with a water diverter known as a cricket or saddle above the chimney. Hi all i am new to this rafter lingo and techniques but am building a shed that is 16 x16. Prescriptive roof consisting of the rafters a ridge board ceiling joists and collar ties.

Hip valley roof. Some of these can support the roof and prevent ridge sagging and wall spreading. A common rafter refers to all the rafters that are identical in a specific roof s construction. Cover some of the more common roof and rafter terms you ll need.

Roof framing terms are related to the parts of a triangle. Flashing is used to seal the gap between the chimney and roofing material. This example is for a roof with an 8 12 pitch. The point at which all the rafters are.

Parts of a roof a ridge board is a horizontal member of the roof frame. I plan to support the ridge beam with support beam in the middle and the ends. Position the square at the end of the rafter board with the tongue on your left and facing away from you. In a rafter roof all of these components are required to provide a stable roof.

Construction of a rafter roof. Position the square with both the 8 inch on the outside edge of the tongue and the 12 inch on the blade on the upper edge of the board. Rafter layout with a framing square. From the second floor i have added another 2 framing around on which the roof rafters will sit.

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. To find the length of a common rafter you can use a construction calculator a free online calculator or some junior high math involving the pythagorean formula. I plan to have 2 10 joists so there will be a second floor. Not shown are the hip and valley rafters needed to tie the roof together where the rafters are framed at an angle to each other.

Roof frame plan details the rafters and the spacing of the roof. Refer to the figure as you study the terms discussed in the next paragraphs. Looked at from the birds eye view. The roof framing may be interrupted for openings such as a chimney or skylight.

Gable roof framing plan. Roof features associated with basic roof framing terms are shown in figure 2 2. Once you make a pattern rafter all or most are cut to match.