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In __________ method of underpinning, the existing wall is divided into suitable sections of width about 1.20 metre to 1.50 metre.

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In __________ method of underpinning, the existing wall is divided into suitable sections of width about 1.20 metre to 1.50 metre.

(a) Pit Method

(b) Pile Method

(c) Miscellaneous Method

(d) Chemical Method

The question was asked in a national level competition.

This question is from Underpinning and its Types topic in portion Scaffolding, Shoring and Underpinning of Construction & Building Materials

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The correct answer is (a) Pit Method

To elaborate: In Pit Method, the holes are then made in the existing wall. The needles with bearing plates and then inserted through this holes are supported on Jack. The pit is excavated and the existing foundation is taken up to the required level.

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