Function Of Roof Rafter

A rafter tie is a tension tie in the lower third of opposing gable rafters that is intended to resist the outward thrust of the rafter under a load.

Function of roof rafter.

If you add an eaves overhang dimension then the amount the rafter sticks passed the wall will be added to the rafter length. A rafter is a structural component that is used as part of a roof construction. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. Includes result for hip valley factor slope factor and the roof slope in degrees.

The roof framing mock up below shows a standard rafter tie. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. 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. 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.

It is a waterproofing layer made of regular felt stacked above the solid. Collar ties rafter ties tension beams structural ridge beams. For homes and buildings especially a roof performs multiple functions all of which are tied into providing protection. A roof is an essential covering that is placed on houses and buildings and even such items as automobiles.

Some of these can support the roof and prevent ridge sagging and wall spreading. The roof rafters provide integral structural support to the roof. Different elements and parts of the roof provide protection to the structure s interior and exterior. Rafter designing buildings wiki share your construction industry knowledge.

A pair of rafters is called a couple in home construction rafters are normally made of wood exposed rafters are a feature of some traditional roof styles. A rafter is one of a series of sloped structural members such as wooden beams that extend from the ridge or hip to the wall plate downslope perimeter or eave and that are designed to support the roof deck and its associated loads. Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter. Calculate the length of a rafter from the roof slope ratio of inches per foot and a building width measurement.