Roof Framing Plan

The point at which all the rafters are attached to.

Roof framing plan.

Ridge horizontal ridge length. This is the basic problem involved in determining the length of a roof rafter a brace or any other member that forms the hypotenuse of an actual or imaginary right triangle. The lower end is done the same way a skillion or shed roof is. Roof framing doesn t have to be daunting but if it s your first try a simple gable roof say on a garden shed is the best bet.

The framing square is used most frequently to find the length of the hypotenuse longest side of a right triangle when the lengths of the other two sides are known. The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall. 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. A roof framing plan is similar to a normal roof plan but in addition to showing the shape of the structure and the outline of the roof it also shows the size and direction of the framing members used to frame the roof.

Transfers the load of the roof through the raftersto walls below. Roof framing simply describes how a group of rafters and beams are fitted or joined together in order to provide support for the roof covering. Depending on the design of the trusses you re making any number of bracing joints will be necessary. Add all the common and jack rafter horizontal run lengths them multiply by the factor.

Parts of a roof a ridge board is a horizontal member of the roof frame. One of the most important parts of building a sturdy roof is the initial roof framing plan. Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves. Calculating roof material from rafter plans the roof plan shows the rafter direction and spacing but not the rafter length.

Finish the end walls with blocking studs notched to fit around the rafters and fastened to the top plate. A super basic a frame roof will require anywhere between 4 and 8 depending on the size of the rafters with plumb cuts necessary for each angle in the brace. Very simple trusses work on a principle of thirds. A lean to roof just means it s attached to an existing structure.

Roof framing rafter layout.