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Per §10.7, the Indian Standard method of concrete mix design is described in:
A{'text': 'IS 456-1978 only', 'label': 'A'}
B{'text': 'IS 1199-1959 for fresh concrete tests', 'label': 'B'}
C{'text': 'IS 269-1989 for OPC grades', 'label': 'C'}
D{'text': 'IS 10262 specifically for mix design', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': 'IS 10262 specifically for mix design', 'label': 'D'}
1. §10.7 lists six mix-design methods: Trial-and-error, Fineness Modulus, Road Note No. 4, ACI method, British method, and the 'Mix design method as per IS 10262.'
2. IS 456 covers structural design, IS 269 the OPC grades and IS 1199 the fresh-concrete tests; only IS 10262 is the mix-design code.
_Source: IGNOU ET-522 Block-3 Unit-10 Concrete Mix Design, §10.7, p. 14_
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