Framin Roof Layout

Unit of run is a fixed unit of measure always 12 inches for the common rafter.

Framin roof layout. Measure down y height from the long point of the rafter cut and make a mark. Breaks perfectly on a stud. This mistake happens quite often when you ve got multiple walls to frame up. Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house.

To ensure your layout is correct you ll need to set the layout behind the actual 16 increment. In order to maintain the triangle shape there are specific requirements for how to fasten the corners of the triangle together. Refer to the figure as you study the terms discussed in the next paragraphs. Roof framing rafter layout 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.

Rafter layout with a framing square this example is for a roof with an 8 12 pitch position the square at the end of the rafter board with the tongue on your left and facing away from you. This will the first point of the rafter measurement line. Features associated with basic roof framing terms are shown in figure 2 2. 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.

Meeting current irc roof framing requirements means builders are really constructing very simple triangles using the rafters and ceiling joists because triangles are known to be the most stable shape. Framing gone wrong top and bottom plates.