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For ordinary reinforced concrete work, the source recommends a maximum aggregate size of:
A{'text': '10 mm', 'label': 'A'}
B{'text': '20 mm', 'label': 'B'}
C{'text': '40 mm', 'label': 'C'}
D{'text': '80 mm', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': '20 mm', 'label': 'B'}
1. §2.2.3 reads: 'keeping in view all practical consideration, for reinforced concrete work a maximum aggregate size of 20 mm is considered satisfactory.'
2. The general convenient maximum is 80 mm, but it is restricted by member thickness, reinforcement spacing and clear cover.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.3, p. 20_
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