The finished flooring with a wide variety of choices in housing, the General popular use has been basically finished, well, which served during the 3.5-4.5 m poles, while the hollow floor (hallow core) that can be used in a wider range of Poles to 6-15 m, a large building in the popular section, Post tension slab concrete flooring system is a system where there is a special type of steel that is designed to be able to get extra large tensile strength is inside and pull it taut, a special type of steel to concrete casting is done to increase the strength of the surface allows more weight.
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