Soil Mechanics and Foundation
Highway Research Board (HRB) classification of soils is based on

None of these
plasticity characteristics
both particle size composition and plasticity characteristics
particle size composition

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Soil Mechanics and Foundation
The effect of cohesion on a soil is to

increase both the active earth pressure intensity and passive earth pressure intensity
reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
reduce both the active earth pressure intensity and passive earth pressure intensity
increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99]

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