Reinforced Concrete Roof Slab Design

Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars.

Reinforced concrete roof slab design.

Steel reinforced slabs typically between 100 and 500 mm thick are most often used to construct floors and ceilings while thinner mud slabs may be used for exterior paving see below in many domestic and industrial buildings a thick concrete slab supported on. Sufficiently waterproof concrete can be achieved and is regularly used for water tanks ships pipe and more. 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. Roof slabs have an excessive.

Contents basics of reinforced concrete slab design1. Problems have been identified with the reinforced concrete r c roof slabs over the pump houses that serve bulk fuel installations bfi at some establishments. Exact specifications vary but most concrete roofs are several inches thick. It is believed that the design dates from c 1960 and was used upto the mid 1990s for which the r c.

Thickness of the slab is decided based on span to depth ratio specified in is456 2000. The diameter of bar generally used in slabs are. A concrete slab is a common structural element of modern buildings consisting of a flat horizontal surface made of cast concrete. A concrete roof is exactly what it sounds like.

Effective span of slab2. The slab has to carry a distributed permanent action of 1 0 kn m2 excluding slab self weight and a variable action of 3. 6 mm 8 mm 10 mm 12mm and 16mm. Concrete slab design proceduredesign of continuous slab basics of reinforced concrete slab design slabs are generally designed on the assumption that they consists of a number of beams of breadth one meter.

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. The construction of the original building consisted of a reinforced concrete frame with cast in situ trough floors. The design of the upper storey extension was a lightweight strut. Simply supported one way slab a rectangular reinforced concrete slab is simply supported on two masonry walls 250 mm thick and 3 75 m apart.

However the complexity of the generalized approach. The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab. An extra floor was required to be constructed which involved converting the original roof slab to a floor slab thereby increasing the live load capacity to 3 kn m 2. Http goo gl yp7w4l for more free video tutorials covering concrete structural design the objectives of this video are to introduce the design problem unde.