alleryStart learning →The unit specifies that individual embedded pipe runs may range from 180 to 360 m, with a target design length of approximately:
A240 m
B120 m
C60 m
D500 m
Answer & Solution
Correct answer: A. 240 m
1. Pipe runs in a post-cooling system are sized to balance flow resistance with cooling effect.
2. The unit gives a permitted range of 180 to 360 m for an individual pipe run.
3. The recommended target length for design purposes is 240 m, sitting near the middle of the range.
4. Pipe loops on the same manifold are kept roughly equal so flow and cooling are balanced.
5. 60 m and 500 m fall outside the recommended range.
_Source: IGNOU Concrete Technology, Unit 7 "Concreting Equipment" (Mixers, Cableways, Batchers, Buckets, Pre/Post Cooling)._
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