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The __________ arrangement of preventing the sleep of earth in foundation trenches is used when the excavation is to be carried out in the moderately firm ground.

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The __________ arrangement of preventing the sleep of earth in foundation trenches is used when the excavation is to be carried out in the moderately firm ground.

(a) Runner

(b) Stay bracing

(c) Vertical sheeting

(d) Sheet piling

The question was asked during an interview.

My doubt is from Deep Excavations topic in portion Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

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The correct option is (b) Stay bracing

Easiest explanation: In case of moderately firm ground, Stay bracing is adopted when the depth of excavation does not exceed 2 metres. In this, the vertical sheets of piling boards are placed opposite each other against the wall of the trench.

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