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Cylindrical concrete buckets are open at the top and discharge through a centre gate in the bottom. Lightweight cylindrical buckets used with cranes for concrete of normal slump up to 75 mm are available in capacity range:
Answer & Solution
Correct answer: B.
1. The unit lists cylindrical bucket sizes by application class.
2. Lightweight buckets handling normal-slump concrete up to 75 mm slump fall in the 0.25–1.14 m³ band.
3. Larger buckets for lower-slump concrete range from 0.57 to 3 m³.
4. Heavy-duty buckets for very low slump and up to 15 cm aggregate go from 1.5 to 9 m³.
5. The other ranges either undershoot or overshoot the lightweight class.
_Source: IGNOU Concrete Technology, Unit 7 "Concreting Equipment" (Mixers, Cableways, Batchers, Buckets, Pre/Post Cooling)._
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