Roof Framing Plan

The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall.

Roof framing plan.

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. Finish the end walls with blocking studs notched to fit around the rafters and fastened to the top plate. 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. Measure down y height from the long point of the rafter cut and make a mark.

Lean to shed roof framing. Roof framing rafter layout. Depending on the design of the trusses you re making any number of bracing joints will be necessary. Parts of a roof a ridge board is a horizontal member of the roof frame.

Calculate the ratio of the rafters horizontal run to its slope length. Very simple trusses work on a principle of thirds. The point at which all the rafters are attached to. Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves.

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. Ridge horizontal ridge length. 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. 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.

One of the most important parts of building a sturdy roof is the initial roof framing plan. The lower end is done the same way a skillion or shed roof is. Transfers the load of the roof through the raftersto walls below. A lean to roof just means it s attached to an existing structure.

Add all the common and jack rafter horizontal run lengths them multiply by the factor.