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Monday, December 5, 2011

Concrete Slabs

A concrete slab is a rectangular, flat and strong structure made up of concrete. Concrete slabs are 10-50 cm thick. Mainly, these are used in the construction process. These are used in floors, roofs, bridge deck, homes and different buildings to make them strong.
Designs and Shapes
These are available in different shapes and designs. Suspended slabs are created to produce and maintain the strength and weight. If any change is necessary in the design, it is brought in the bottom side of the concrete slab; whereas the upper or top side is left unchanged. Below some types are written:
Corrugated concrete slabs: These slabs are made by the combination of steel and concrete. Usually, concrete is released in a strong steel tray to make it stronger for buildings and construction purposes. It also enhances the length of the slab and makes it very hard. Such concrete slabs are very hard to get bend. So, these slabs provide more power to buildings and enhance their ability to withstand against the variations of the climate and environment. These slabs can be very heavy as well.
Ribbed concrete slabs: Special concrete slabs, which are made to enhance the strength of the buildings. These slabs have special additional strength and power on one direction. So, such strong side is used to prevent the harmful shakes to buildings.
Waffle concrete slab: Like ribbed concrete slabs, these slabs are designed to enhance the strength of the buildings. These concrete slabs have the extra strength in both directions.
One-way slab: These are the powerful and strong concrete slabs. In these slabs, the structural strength is provided in the shortest direction. Such slabs are used widely in the buildings.
Two-way slab: Structural strength is given in two directions to enhance the ability of the slab to make it suitable for buildings.
Concrete Slabs and Constructions
Concrete are available in the form of prefabricated slabs or in situ slabs. Prefabricated slabs are really important and vital ones as they have been used widely in the industry. These slabs are manufactured in the factory, and then they are brought at the working site or buildings. It is rigged in between the steel walls or layers and concrete beams. This act helps the buildings and houses to get more strength from these slabs. It is up to conditions that slab will be pre-stressed or post-stressed. Both versions have various features. These slabs may be unstressed according to a situation; it is also used in various buildings. These slabs have many drawbacks along with advantages. If these slabs are not designed according to the need, and they have flaws like wrong dimensions then these slabs won't get fit in given slot, this situation might be harmful to buildings.
Situ construction mode of slabs differs a lot from prefabricated slabs. These slabs are made at the working site, and they are made under the supervision of workers. The concrete is rigged in a steel box and let it be gotten harder. When the concrete is hard enough, it is taken out of the box. Hence, a slab is obtained. Now, this slab can be used for working and construction purposes. This steel box is formwork. Concrete is put in the formwork in the wet and hot form. Steel box is very strong. In addition to steel, formwork may have plastic or wood stuff in it. These things are used to increase its power, strength and hardness so that it can control and store the wet and hot concrete. Concrete slabs have become the most significant part of buildings now.
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