50 grams of oven dried soil sample is taken for sedimentation analysis. The hydrometer reading in a 100 ml soil suspension 30 minutes after the commencement of sedimentation test is 24.5. The effective depth for R₁ = 25, found from the calibration curve is 10.7 cm. The meniscus correction is found to be + 0.5 and the composite correction as - 2.50 at the test temperature of 30°C. Taking the specific gravity of particles as 2.75 and viscosity of water as 0.008 poise, calculate the smallest particle size which would have settled during this interval of 30 minutes and the percentage of particle finer than this size.

50 grams of oven dried soil sample is taken for sedimentation analysis. The hydrometer reading in a 100 ml soil suspension 30 minutes after the commencement of sedimentation test is 24.5. The effective depth for R₁ = 25, found from the calibration curve is 10.7 cm. The meniscus correction is found to be + 0.5 and the composite correction as - 2.50 at the test temperature of 30°C. Taking the specific gravity of particles as 2.75 and viscosity of water as 0.008 poise, calculate the smallest particle size which would have settled during this interval of 30 minutes and the percentage of particle finer than this size.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.

Question

n
50 grams of oven dried soil sample is taken for sedimentation analysis. The hydrometer
reading in a 100 ml soil suspension 30 minutes after the commencement of
sedimentation test is 24.5. The effective depth for R₁ = 25, found from the calibration
curve is 10.7 cm. The meniscus correction is found to be + 0.5 and the composite
correction as - 2.50 at the test temperature of 30°C. Taking the specific gravity of
particles as 2.75 and viscosity of water as 0.008 poise, calculate the smallest particle
size which would have settled during this interval of 30 minutes and the percentage
of particle finer than this size.

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