For a constant head laborátory permeability test on a fine sand, the tollowinKvalues are given: (Refer to Figure Figure 03.13)Length of specimen,L= 10 inchesDiameter of specimen = 2.5 inchesHead difference, h = 22 inchesWater collęcted in 2 min = 0.044 in'l'he void ratio of the specimen is 0.34.a) Determine the conductivity, k, of the soil in in/min.b) Determine the discharge velocity through the soil in in/mine) Determine the seepage velocity in in/min.%3DPorous stone tSoil specimenPorous stoneGraduatedflask

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Answered: For a constant head laborátory…

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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Question A dry sand specimen is put through a triaxial test. The cell pressure is 50 kPa and the deviator stress at failure is 100 kPa, the angle of internal friction for the sand specimen is
16. In performing water content determination, the readability of the balance for specimen greater than 200 grams is ... A. 0.01 B. 0.001 C. 0.1 I D. 1 17. Which of the following clay mineral has a range of liquid limit between 55-120%? A. Illite B. Montmorillonite C. Kaolinite 18. True or False. Peat and highly organic soils can have water contents up to about 500%.
2. Sand at a given relative density has a friction angle of approximately 33° (relatively low stress). When the sample is unsaturated at a given value of saturation (not given to you), the specimen has a negative pore pressure of 5 kPa. How tall a sandcastle "vertical" wall can you construct? What would happen to your sandcastle if the level of saturation suddenly increased? (Assume a total unit weight of 18 kN/m³)
If the height of moist fine sand in a measuring cylinder is 10.5 cm and the height reduces when it is completely inundated to 8.2 cm. The percentage of bulking of sand is:
10. Which one of the following is an assumption made by Coulomb in the development of his earth pressure theory for sand and for active state? (a) The rupture surface is non-uniform surface (b) There is a wall friction on the pressure surface (c) Failure is three dimensional (d) The soil is cohesive
Calculate the forces in members BC, CD, and CG of the loaded truss composed of equilateral triangles, each of side length 9 m. The forces are positive if in tension, negative if in compression. BC= Answers: CD = A CG = 9 m B C 3.3 KN G KN KN KN D E 6.0 KN
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
A wet sand sample has a volume of 4.55x10^-4 m^3 and weighs 8.4 N. After oven-drying, the weight reduces to 7.4 N. Use Gs=2.79. Calculate the degree of saturation. (in decimal form)
Problem: For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen - 16 cm Diameter of specimen - 9.6 cm Constant head difference - 50 cm Volume of water collected in 4 min - 420 cc Void ratio of the soil specimen - 0.55 A.) Determine the hydraulic conductivity of the soil in cm/sec B.) Determine the discharge velocity in cm/sec C.) Determine seepage velocity in cm/sec
The results of a constant head permeability test for a fine sand are as follows: Diameter of the sample = 31 cm Length of sample = 98 cm Constant head difference = 52 cm Time of collection = 364 secs Weight of water collected = 448 grams Find the seepage velocity in cm/min. if the void ratio is 0.33. Round off to four decimal places. Answer: 0.3943

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