Flat Roof Design Construction

Some local codes take it a step further allowing a slope of only of an inch per foot.

Flat roof design construction. Many specifiers aim only to meet the minimum standard of 1 in 80 achieved falls for a flat roof this leaves little room for error when it comes to building tolerances and roof deflection and can result in non compliance and problems at a later date. From there the flat roof system you choose will determine the materials you apply. This will give additional stability to the roof structure. For additional stability you can also use steel joists that are built into one or both of the walls.

The steels or rsjs rolled steel joists are often built into one or both walls to give added stability to the roof structure. According to the international code council the minimum slope for water runoff is inch per 12 inches. Flat roofs became popular amongst early 1900s modernist architects because they removed the often complicated pitched roofs of traditional construction and replaced them with perfect straight lines. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases. Flat roofs create long horizontal planes reminiscent of the broad horizon line seen often in nature. These lines gleamed against the sky in the same way as other products of industrialisation such as trains and ocean liners and so represented a new way of creating buildings. Flat roofs are typically designed with a pitch of 10 degrees or less.

Theyre simple in form and function and are a good example of the modernist principle of clean lines.