Structural Analysis
For heavily reinforced concrete member, the nominal maximum size of the aggregates should be restricted to

Greater of A and B
5 mm less than the minimum cover to the reinforcement
5 mm less than the minimum clear distance between the main bars
Smaller of A and B

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Structural Analysis
The minimum horizontal distance between two parallel main reinforcing bars, is

Greatest value of the above
The diameter of the longer bar if their diameters are unequal
The diameter of the bar if their diameters are same
5 mm more than nominal maximum size of the coarse aggregate

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