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The inside surface of formwork should be ________ so as to turn out a good concrete surface.

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The inside surface of formwork should be ________ so as to turn out a good concrete surface.

(a) Smooth

(b) Undulated

(c) Rough

(d) Geometrical

This question was posed to me at a job interview.

The query is from Components of Formwork in chapter Arches, Lintels, Stairs and Formwork of Construction & Building Materials

1 Answer

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Best answer
Correct answer is (a) Smooth

The best I can explain: The Smooth Surface is achieved by applying crude oil or soft soap solution to the inside surface of the formwork. This also makes the removal of formwork easy.

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