Flat Roof Structural System

This is also a hydrostatic or water barrier system.

Flat roof structural system.

It is a horizontal structural component with top and bottom surfaces parallel and near. In short any roof covering that can make a flat roof waterproof in one layer unlike roofing felt with its 3 layer system for instance. Environmental loads such as snow water and wind loads should be calculated in accordance with bs en 1991. For additional stability you can also use steel joists that are built into one or both of the walls.

A slab is usually several inches thick and supported by beams columns walls or the ground. This will give additional stability to the roof structure. Today s variety of flat or low slope commercial roofing options roof pitches ranging from 12 to 3 12 is no longer simple and has grown considerably in the last 50 years. All three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof.

Dead loads from the self weight of the roof construction. From there the flat roof system you choose will determine the materials you apply. Our structural engineers calculate the optimum design for your roof and ensure that loads are optimally spread over the supporting structures and the reserve load capacity is not exceeded. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10.

This can include epdm rubber and fibreglass talked about above but commonly especially in the trade and in this article it refers to pvc tpo tpe and pib. Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone. Flat roofs or low slope roofs are also commonly found on commercial buildings throughout the world. This traditional system requires a solid substrate.

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. It also requires the use of metals that can be soldered such as copper. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. Although simple and utilitarian the main goal of a roof system is to maintain the watertight integrity of a building and keep its contents dry.

The metal roof systems design manual by the metal building manufacturers association provides further guidance pertaining to metal roof systems. Ballasted or fastened for any statics. A slab is a structural component that is used to create flat horizontal surfaces such as floors roof decks and ceilings. Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof.

Flat roofs shall be designed to carry all imposed and dead loads acting on the structure of the roof. A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. Flat roof structure.