1. The figure shows layers of soil in a tube that is 100mm x 100mm in cross – section. Water3. For a constant head laboratory permeability test on a fine sand, the followiis supplied to maintain a constant head difference of 400mm across the sample. Thegiven:hydraulic conductivities of the soils in the direction of flow through them are as follows:Soilk (cm/sec)Porosity, nLength of specimen300 mmA1x 10-225%Diameter of specimen200 mm3х 10332%Head difference400 mmC4.9 x 10-422%Volume of water collected in 4 minutes420 m3Void ratio of the soil specimen0.55Water supplyContinuoussupplyOverflowConstant headdifference = 400 mm400 mmAB-soil.sample300 mm Porous plate150 mm 150 mmHorizontal areaof soil sample200 mm200 mma. Calculate the equivalent k in cm/sec.a. Compute the coefficient of permeability in cm/sec.b. Calculate the rate of water supply in cm³/hr.b. Compute the discharge velocity in cm/sec.c. Calculate the seepage velocity through soil C in m/sec.c. Compute the seepage velocity.

3. For a constant head laboratory permeability test on a fine sand, the followi given: Length of specimen 300 mm Diameter of specimen 200 mm Head difference 400 mm Volume of water collected in 4 minutes 420 m³ Void ratio of the soil specimen 0.55 Continuous supply Overflow 400 mm soil 300 mm Porous plate jample Horizontal area of soil sample 200 mm a. Compute the coefficient of permeability in cm/sec. b. Compute the discharge velocity in cm/sec. c. Compute the seepage velocity.

3. For a constant head laboratory permeability test on a fine sand, the followi given: Length of specimen 300 mm Diameter of specimen 200 mm Head difference 400 mm Volume of water collected in 4 minutes 420 m³ Void ratio of the soil specimen 0.55 Continuous supply Overflow 400 mm soil 300 mm Porous plate jample Horizontal area of soil sample 200 mm a. Compute the coefficient of permeability in cm/sec. b. Compute the discharge velocity in cm/sec. c. Compute the seepage velocity.

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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The following results were recorded during a Falling head permeability test: Sample diameter = 120 mm Sample length = 140 mm Initial head = 510 mm Final head = 310 mm Standpipe diameter = 6 mm Duration of flow = 3.4 mins Determine the coefficient of permeability for the soil in m/s. Based on the coefficient of permeability estimate the soil type
A sample of saturated clay was placed in a container and weighed. The weight was 6N. The clay in its container was placed in an oven for 24 hours at 105˚C. The weight reduced to a constant value of 5N. The weight of the container is 1N. If Gs = 2.7, determine: a) Water Content b) Void Ratio c) Bulk Unit Weight d) Dry Unit Weight e) Effective Unit Weight
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