Stick Framing Roof Rafters

Continuing on from part 3.

Stick framing roof rafters.

With premanufactured trusses or with rafters and ceiling joists commonly called stick framing. This will the first point of the rafter measurement line. There are two common ways of framing the roof of a house. Rafter layout with a framing square.

The rafters are usually positioned directly above the wall studs. The roof rafters provide integral structural support to the roof. Stick framing can also produce. 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 again make sure to consult local codes.

The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. 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. Measure down y height from the long point of the rafter cut and make a mark. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter.

Stick framing combines roof rafters with ceiling joists. A stick framed roof is made up of individual rafters and that are connected to a top beam. This example is for a roof with an 8 12 pitch. Most roofs utilize 16 inch spacings for strength and rigidity.

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. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Additional boards are placed horizontally on the frames to create a complete cover for the structure. Let s consider a basic gable wood roof framing design.

Position the square at the end of the rafter board with the tongue on your left and facing away from you. For stick framed roofs that have horizontal joists rafters rest on the exterior wall plates and slope upward to meet at a center ridge board to form a gable roof. The beam or the ridge is the central part of the structure as all the framing must be connected to it. 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.

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 still prefer stick frame roofing. Floor beam span tables of residential structural design we will now look at roof rafter and beam design.