Roof dormers as architectural features are described separately at roof dormer types photo guide readers should see architecture building component id for illustrations of building architectural types shown below are provided courtesy of carson dunlop associates.
Roof architecture definition.
A roof is part of the building envelope.
Normally a roof span is the same as the building width between the outer edges of the wall top plates.
Roof shapes differ greatly from region to region.
The main factors which influence the shape of roofs are the climate and the materials available for roof structure and the outer covering.
They can be arched or domed.
A roof is the top covering of a building including all materials and constructions necessary to support it on the walls of the building or on uprights providing protection against rain snow sunlight extremes of temperature and wind.
Usages vary slightly from region to region or from one builder or architect to another.
A single flat sheet or a complex arrangement of slopes gables and hips.
Roof shapes vary from almost flat to steeply pitched.
They were usually set at a slope or pitch so that rainfall could drain off.
Definition of roof span.
Roofs have been constructed in a wide variety of forms flat pitched vaulted domed or in combinations as dictated by technical economic or aesthetic considerations.
Unit rise is a is a snonym for slope or roof slope.
Readers should see the additional photo and drawing guides to building architectural styles in the links listed at page top or.
The characteristics of a roof are dependent upon the purpose of the building that it covers the available roofing materials and the local traditions of construction and wider concepts of architectural design and practic.
The vertical change in height per unit of horizontal distance or run.
Or truncated to mini.
For example a 3 12 roof has a unit rise of 3 of height increase or rise per 12 of horizontal run or distance.
Roof terminology is also not rigidly defined.
Roofs have been constructed in a wide variety of forms flat pitched vaulted domed or in combinations as dictated by technical economic or aesthetic considerations.