RoofConstruction-Terminology

What Are The Different Types Of Roofs? The roof is the uppermost portion of the building which protects the building from rain, wind, and sun. Various types of roofs used may be divided broadly into three types: 1. Flat roofs 2. Pitched roofs 3. Shells and folded plates. Flat roofs are used in plains where rainfall is less and climate is moderate. Pitched roofs are  preferred wherever rainfall is more. Shells and folded plate roofs are used to cover large  column-free areas required for auditoriums, factories, etc. Brief description of these roofs is  presented below: 1. Flat Roofs These roofs are nearly flat. However slight slope (not more than 10°) is given to  drain out the rainwater. All types of upper-story floors can serve as flat roofs. Many times  top of these roofs are treated with waterproofing materials-like mixing waterproofing  chemicals in concrete, providing Coba concrete. With the advent of reliable waterproofing  techniques, such roofs are constructed e

The Coupled Roof, Ceilings and Trusses M oving off from early roof forms that provided each wall and roof in one unit, succeeding development showed a real roof designed on masonry or timber walls. the only type of roof was a coupled roof, consisting of 2 lengths of timber bearing against one another at the highest and resting on a plate at their feet. The timbers, known as couples, were pegged along at the highest with timber dowels and were equally pegged or spiked to the plate. The term ‘couple’ was used until the fifteenth century once the terms ‘spar’ or ‘rafter’ began to be used. The term rafter in fact continues to be wont to describe the piece of timber during a roof spanning from the ridge to the place. paced regarding four hundred millimeters apart tied solely by horizontal binders and tile battens. the easy couple was adequate for tiny span dwellings and steep pitches, however the outward poke force at the feet of the rafters caused stability issues with the walls

Here are 14 no common  roof shapes  in the  construction of the roof . Also, we will discuss  roof terminology  and roof structure terms  briefly. Fig: 1.1 Duo pitched roof. This is the most common roof shape with equal pitches on either side, i.e. angle A equals angle B. Fig: 1.2 Asymmetric roofs; angle C is not equal to angle D. Fig: 1.3 Mono pitched roof; angle E equals 90°. Fig: 1.4 Truncated duo pitched roof; angle F equals angle G. This truss form is often introduced into domestic housing in conjunction with the conventional duo pitched roof to form an interesting roofline. Fig: 1.5 Fink truss shape. This is the most common trussed rafter form used on spans of up to 8 to 9 m. Fig: 1.6 Fan truss shape. This is used on larger spans and is a common trussed rafter form. Fig: 1.7 Double ‘W’ shape. This is used on spans above 14 m and is not often used on housing. Fig: 1.8 Howe four-bay truss. This is often used in trussed rafters in girder form. This could al