Parts Of A Roof Rafter

The ridge is the horizontal peak of the roof.

Parts of a roof rafter.

The larger rafter that sits directly on a tie beam and used to carry a purlin. There must be no gaps in the precision of the fit. In general a rafter needs to be placed every two feet at least for maximum load bearing support and security. The horizontal beam connecting two rafters that intersect at the ridge.

The ridge is the peak where two sloped roof sections meet. Part of a roof s frame a ridge board runs horizontally along the peak of a sloped roof. The miter is simply a plumb cut. The central vertical post in a king post roof truss.

Here s a closer look at several other components of your rooftop system. Measure and mark cap plates for each rafter. The cripple jack rafter is also part of a common rafter but it touches neither the ridge of the roof nor the rafter plate. Roof edge or eaves edge all the boards running along the edge of the roof or eaves.

Parts of a roof the main structural parts of a roof are ceiling joists ridge board jack rafter hip rafter common rafters creeper rafters raking plates out riggers and noggings or last rafter overhang. Essentially the spine of a conventional stick framed roof the ridge board is sandwiched between the meeting ends of the roof rafters. When you cut the rafters you ll need to make 3 separate cuts. Flashing if you have vent pipes chimneys or valleys on your roof you need to protect them and seal them against.

Cap plates are little metal braces that will secure the trusses to the walls. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. If there is a noticeable gap then it should be a red flag for investigation. Collar tie and beam a collar tie or beam figure 7 7 is a piece of stock usually 1 x 4 1 x 6 l x 8 or 2 x 4 fastened in a horizontal position to a pair of rafters between the plate and the ridge of the roof.

It is a combination of two cuts. The part of the rafter that sits on the wall plate is known as the bird s mouth. A chief structural member as it is a load bearing wall. Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing.

Decking or sheathing usually made from 1 2 inch plywood the decking closes and reinforces the roof structure and provides a nailbed for the shingles. The ridge cut also called the plumb cut at the top of the rafter the birdsmouth cut which itself comprises 2 different cuts where the rafter meets the building s wall and the tail cut at the base of the rafter. Parts of a rafter. The top of a a rafter usually joins a ridge.