Q. Wash boring cannot be used for _________ type of soil strata.

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Q. Mud rotary drilling belongs to _________ type of boring method.

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Q. The Instruments used in hand augers are _________

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Q. The type of boring method that can be used for both rock and soils are ________

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Q. The commonly used geophysical method for site exploration is ________

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Q. Electrical resistivity method is based on measurement of _____________

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Q. The method used for studying of horizontal changes in the sub-soil is _______

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Q. The commonly used penetration test are _______

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Q. In the seismic refraction method, the waves sent along the ground surface is picked by _________

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Q. The depth of exploration for isolated spread footing is ___________

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Q. In hand operated rings in ‘auger and shell boring’ the depth of which it can be used is _________

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Q. Auger is suitable for _______

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Q. In rotator boring __________ is forced down the hallow drillrods.

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Q. A ________ sample has preserved natural structure of soil.

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Q. ________ sample has the natural structure of soil as modified.

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Q. In the open drive samples, the tube head is provided with vents.

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Q. In open drive samples, the tube is split into two parts.

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Q. The depth up to which the increase in pressure due to structural loading is likely to cause perceptible settlement is _______

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Q. The significant depth is assumed up to a level at which the net increase in vertical pressure becomes _______ of initial overburden pressure.

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Q. Thick wall samplers have area ratio______

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