Roof Framing Nomenclature

Framing consists of a doubled valley rafter in the middle that extends from a top plate corner to a second ridge board with angled jack rafters for support.

Roof framing nomenclature.

Types of roofs the most commonly used types of pitched roof construction are the gable the hip the intersecting and the shed or lean to. Gable a gable roof has a ridge at the center and slopes in two directions. At the top of a wall panel you have a top plate and at the bottom you ll have a bottom plate. Top plate or plates in conventional western platform framing there are two top plates.

Collar tie also collar beam in profile the framing of a conventional pitched roof forms a triangle. Valley the inward angle of two sloping roof sections. Standard stick framing or the newer truss framing. The butt of a shingle is the end that faces down roof.

Common types of roofs and basic framing terms. Definition of structural ridge or ridge beam used in roof framing a structural ridge beam is a horizontal beam placed at the peak or ridge of a roof and is designed to carry much of the live and dead loads or weight of the roof structure by itself. Sway bracing there are a few ways to sway brace the wall. Stick truss roof framing.

Overhangs hips and dormers add greatly to the complexity of the framing. This is to help prevent deflection and sag in the roof. The inherent strength and integrity of the triangular form makes the roof a sound structure. The top horizontal framing members of a framed wall.

Nearly all roofs are framed using one of two methods. It is simple in design economical to construct. An example of each is shown in figure 2 1. Roof framing can be simple or complex depending on the roof.

On any wall panel or framing piece the beams that run horizontal at the very top and bottom of the frame are called plates.