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Minimum reinforcementThe mild steel reinforcement in either direction in slabsshall not be less than0.15 percent of the total crosssectionalarea. However, this value can be reduced to0.12 percent when high strength deformed bars orwelded wire fabric are used.Longitudinal reinforcementThe cross-sectional area of longitudinalreinforcement, shall be not less than0.8 percentnor more than6 percent of the gross crosssectionalarea of the column.NOTE - The use of6 percent reinforcement may involvepractical difficulties in placing and compacting of concrete;hence lower percentage is recommended. Where bars fromthe columns below have to be lapped with those in thecolumn under consideration, the percentage of steel shallusually not exceed4 percent.
