4.3. Comparison of Cast in Place and Precast Concrete The major variations for cost comparison between cast in place and precast occur in the cost of formwork, reinforcement, cost of workmanship, and concrete in slabs and columns. Table 4 shows the
Reinforced Concrete Floor : Cast in situ vs Precast The disadvantage of cast in situ concrete floors are : The need for formwork The time taken for the concrete to cure before the formwork can be released for reuse and the floor made available as a working area
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