Attic Framing Details

The face of the square is the side one sees when the square is held with the blade in the left hand the tongue in the right hand and the heel pointed away from the body.

Attic framing details.

It is a waterproofing layer made of regular felt stacked above the solid. Roof framing must be designed to hold up a structural load including what is called dead load its own weight and the weight of the roof covering and additional loading called the environmental load such as snow and wind. 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. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.

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. The framing square fig. Collar ties rafter ties tension beams structural ridge beams. A collar beam adds strength to the triangle at the middle.

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. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework. Gable and hip roofs may be built primarily of trusses. He was a xenophobic man with a condescending attitude but he did know his roofs or rooves as a lot of the guys here like to say.

Stick framing creates a triangle between the rafters and ceiling joists. Such methods use a 4 foot design module which governs a 16 inch spacing of joists studs rafters and panel sheathing products. Some of these can support the roof and prevent ridge sagging and wall spreading. The blade and tongue form a right angle.

I learned roof framing the hardest and most maddening way possible from h h. Flat roofs may also need to be designed for live loads if people can walk on them. The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof. Actually these were compilations of articles he wrote about 100 years ago in the union magazine.

This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.