Selecting the most effective floor system can be vital to achieving overall economy, especially for low- and mid-rise buildings and for buildings subjected to relatively low lateral forces where the cost of the lateral-force-resisting system is minimal.
Concrete, reinforcement, and formwork are the three primary expenses in cast-in-place concrete floor construction to consider throughout the design process, but especially during the initial planning stages. Of these three, formwork comprises about 55 percent of the total cost and has the greatest influence on the overall cost of the floor system.
The cost of the concrete, including placing and finishing, typically accounts for about 30 percent of the overall cost. The reinforcing steel has the lowest influence on overall cost (15%). To achieve overall economy.
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