A falling-head permeability test on a specimen of fine sand 17.5 cm2 in area and 15.0 cm long gave a k of 8.5×10-4 cm/s. The dry mass of the sand specimen was 250 g and ρs was 2.71 Mg/m3. Compute the coefficient of permeability of the sand for a void ratio of 0.70.

A falling-head permeability test on a specimen of fine sand 17.5 cm2 in area and 15.0 cm long gave a k of 8.5×10-4 cm/s. The dry mass of the sand specimen was 250 g and ρs was 2.71 Mg/m3. Compute the coefficient of permeability of the sand for a void ratio of 0.70.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.3P

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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

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