A guide to the concrete floor slab design

Loading & span
No special type of plate can be seen as the best for a particular application must take account of a following for all factors and then decide. If more than one floor system can be used for the same span, the next factors that might strongly guide you in a direction that the costs of construction and the speed of erection.

Cost (Economic considerations of spanning)
Typically ranging from less than 6m is economically settled concrete. If the margin isbetween 6m - 9m various other concrete slab can be used as well as economic systems, or even more economical that reinforced concrete. If the margin is more than 9 m, normal concrete is more economical and they will look at pre-stress or other special beam systems.

Pre-cast members can also for economic reasons in large building construction because there are many repetitions of standard components are considered, and reduce costs.

SpeedErection
Today, the construction speed is playing a more important role, are considered especially for the money-saving factor, and this has led to intense, if a project is started.
Depending on the application, in-situ cast reinforced concrete can be very economical, but can also take longer because of the temporary support required until the concrete has set and is not suitable for large multi-storey buildings. This is best for large residential and small officeBlocks. With the formwork precast reduced or completely eliminated, thus resulting in shorter construction times and can be very effective for specific applications, but you have to other factors, will appear before a decision.

Logistics
Post-tensioning prestressed members, instead it is recommended that where the elements require excessive transportation because she is stressed before the members, is poured on site and the sizes of the members could have an increase in transportationCosts that are required as a result because of the larger vehicles in order to move them. The accessibility of the specific site also influences this factor, for some larger vehicles can not access the site.

Services
This is especially important when a tense, for example, makes use of (pre-or post stressed prestressed concrete) members, where openings are provided in table, not one must certainly look forward to the cable, since this is a significantly reduced its strength and structural damageErrors. All services protruding the slab at any point is to be designed in advance to avoid such losses.

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