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The __________ formwork should be neither too dry nor too wet.

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The __________ formwork should be neither too dry nor too wet.

(a) Fibre glass

(b) Steel

(c) Timber

(d) Metal

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Asked question is from Materials Used for Formwork topic in chapter Arches, Lintels, Stairs and Formwork of Construction & Building Materials

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The correct choice is (c) Timber

Easy explanation: If it is too dry, the timber will swell and get distorted when wet concrete is placed on it. This will affect the workability of concrete and honeycomb surface will appear on removal of the formwork.

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