To prevent segregation the concrete should to be thrown from a height of more than. (a) ½ m (b) 1m (c) 1.5m (d) 2m

To prevent segregation the concrete should to be thrown from a height of more than.
(a) ½ m
(b) 1m
(c) 1.5m
(d) 2m
by

1 Answer

Answer :

(b) 1m
by

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