The Purpose Of Roof Framing Is

Upon completing this section you should be able to identify the types of roofs and define common roof framing terms.

The purpose of roof framing is.

In order to do roof framing properly it is important to understand the unique shape and dimensions of your roof since these will greatly impact the geometry of the roof frame. A sagging ridge is one indication that the roof structure may lack adequate rafter ties. Roof slope and rigidness are for shedding water and bearing any extra additional. They help keep walls from spreading due to the weight of the roof.

This chapter will familiarize carpenters with the most common types of roof construction and materials. Timber vs metal frames timber is by far the most common material for house framing in australia. The primary object of a roof in any climate is protection from the elements. Sloped to shed water.

A structure that projects out from a sloping roof to form another roofed area to provide a surface for the installation of windows. The main decision that needs to be made with erecting a roof is which material to use for its construction. A rafter tie forms the bottom chord of a simple triangular roof truss. When the walls spread the ridge board might sag.

Discussion of the types and parts of roof trusses. Custom cross section diagram of a house roof showing the many different parts of a residential roof including structural parts the various layers exterior and various roof features such as skylight and chimney. 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. Fascia a vertical member of the cornice finish installed on the tail end of rafters.

The platform also provides the lateral support against wind and holds the stick walls. Plus it s simple to frame out. It must be strong enough to with stand high winds. 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.

The roof framing is the structure that supports your roof. The gambrel only uses two roof beams along with gusset joints. And in areas of heavy snow it must be constructed more rigidly to bear the extra weight. In the building trades the technique is variously referred to as stick and frame stick and platform or stick and box as the sticks studs give the structure its vertical support and the box shaped floor sections with joists contained within length long post and lintels more commonly called headers support the weight of whatever is above including the next wall up and the roof above the top story.