Reinforced Concrete Flat Roof Construction Details

During construction precautions must be taken to prevent excessive moisture from being trapped between the reinforced concrete roof structure and membrane.

Reinforced concrete flat roof construction details.

Reinforced concrete slabs are heavier and generate higher seismic forces in an event. However whilst they are described as flat almost all flat roofs are actually laid to a fall to ensure that rainwater can run off to the lower side. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. This is one of the common causes of flat roof waterproofing failure.

Oct 4 2017 flat concrete roof construction details detail drawings. Large amount of water vapour can evaporate from reinforced concrete or a wet screed. Step 3 placing the steel joists. The steel joists will provide a strong foundation for the flat concrete.

Sufficiently waterproof concrete can be achieved and is regularly used for water tanks ships pipe and more. Interior support beams can help but the construction works best when concrete walls floor and roof form a solid shell. Typically they are designed to have a minimum fall of 1 40 which given on site inaccuracies should. If reinforced concrete were to be reused strong connections would have to be made between roof and walls.

The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. For an exposed concrete roof installation it is recommended that a competent concrete mix design consultant or concrete supplier be engaged to assist in the development of the concrete mix to be used. One of the most crucial step in building a flat concrete roof is to figure out the size of the concrete block you will need. According to the 1995 aci code all two way reinforced concrete slab systems including edge supported slabs flat slabs and flat plates are to be analyzed and designed according to one unified method such as direct design method and equivalent frame method.

Of course a concrete roof requires more support than a typical wooden roof. Concrete weighs a lot and the outside walls have to be capable of supporting the giant slab. The first flat roofs in central europe wood cement roofs and early reinforced concrete. However the complexity of the generalized approach.

For this reason adding a concrete roof onto a wood.