The inherent strength and integrity of the triangular form makes the roof a sound structure.
Roof framing names.
As the name suggests the roof resembles the side view of a saw blade.
Common rafter valley rafter valley jack rafter hip rafter hip jack rafter cripple jack rafter dormer rafter.
It s a very simple roof design and is inexpensive because the roof serves as both roof and walls.
Refer to the figure as you study the terms discussed in the next paragraphs.
Tie down fixings tie down fixings are used to resist uplift and shear forces lateral loads in floor framing wall framing and roof framing.
Cover some of the more common roof and rafter terms you ll need.
Collar ties rafter ties structural ridge beams.
Mirrored pairs of rafters meet at a ridge and are connected across the base by a ceiling joist.
Triangular upper part of wall at the end of a ridge roof hipped roof.
A raised structure running part or all of the way along the ridge of a double pitched roof with its own roof running parallel with the main roof butterfly roof v roof london 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.
Post a question or comment about roof framing support construction specifications practices.
A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.
It s steep pointed roof which extends all the way to the ground or close to the ground.
Cement mortar filler on top of a chimney stack at the base of chimney pots or protruding flues.
Roof framing terms are related to the parts of a triangle.
A term used to describe a pitched roof the ends of which are also sloped.
However now they are also used in modern home design.
It is a waterproofing layer made of regular felt stacked above the solid.
Sawtooth roofs were once only used on commercial industrial buildings.
A sawtooth roof is two or more parallel pitched roofs in which the sloped and vertical surfaces alternate.
Span is the horizontal distance between the outside.
These are short spars that run from a hip to the eves or from a ridge to a valley.
Roof features associated with basic roof framing terms are shown in figure 2 2.
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.
A v shaped roof resembling an open book.
A kink separates the roof into two parts running towards each other at an obtuse angle.
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Collar tie also collar beam in profile the framing of a conventional pitched roof forms a triangle.
