please answer all parts The following are results of a constant head permeability test with the bubble tube device:100 mmInside diameter of specimen tubeHeight of specimen tubeInside diameter of reservoir tuberers115 mm100 mmOutside diameter of bubble tube15 mm1390 gWeight of dry sandSpecific gravity, G,Head difference, H2.60123 mm43.6 cmInitial height of water in reservoir tubeFinal height of water in reservoir tube31.3 cmTime of water flow in the reservoir tube4.25 minutesDetermine:G,P-1 if needed.(a)Void ratio, e of the soil. You may use e =Pa(b)Rate of flow, q.(c)Hydraulic conductivity, k. You may use q= kiA if needed.%3DIl || || || || || || | ||||

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Answered: The following are results of a constant…

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.1P

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Q: I an oedometer test on a specimen of saturated clay (Gs = 2.72), the applied pressure was increased from 107 1o 214 kPa and the following compression readings recorded: TaBLE| Tmen 0 025 05 1 225 4 &5 9 16 Guugelmm) 78 742 732 721 6% 678 &6 643 637 Teme(mi) 25 % 4 s om0 X0 a0 Guge(nm) 629 626 621 618 616 615 610 602 After 1440 min, the thickness of the specimen was 15.30 mm and the water content was 23.2%. Determine the values of the coefficient of consolidation and the compression atios from (a) the root time plot and (b) the log time plot. Determine also the values of the coefTicient of volume compressibility and the coefficient of permeability.
A 3MM DIAMETER TUBE IS INSERTED IN MERCURY AND LATER IN WATER. A) ASSUME THE TUBE IS CLEAN AS IT CONTACTS WITH MERCURY AND SURFACE TENSION IS 0.5140 N/M, WHAT IS THE AMOUNT OF DEPRESSION? B) ASSUME THE TUBE IS CLEAN AS IT CONTACTS WITH WATER AND SURFACE TENSION IS 0.0728 N/M, WHAT IS THE AMOUNT OF RISE?
A manometer with diameters L and d is used to measure the pressure difference P1 − P2. Both ends experienceatmospheric pressure. Completely derive the correct expression for the pressure difference:
Pumping test was carried out in a layer of soil extending to a depth of 28 m. The initial position of water table is located 4 m below the ground. Observation wells were sighted 33.5 m & 97.5 m from the pumping well. Water is pump at 248.4 m3/hr and when steady level was attained, the drawdowns at the observation wells were observed to be 1.1 m and 0.54 m, respectively. Compute the coefficient of permeability in m/day. CHOICES A. 64.82 m/day B. 71.49 m/day C. 71.49 m/day D. 78.09 m/day
For a falling head permeability test find the value of permeability in (mm/sec) if the initial height of water 1500mm, final height 605mm, time of the test 281 sec, length of the sample 150 mm, diameter of the sample 100mm and diameter of the stand pipe 5mm.
A calibration test of a 12.7mm circular sharp edge orifice in the vertical side of a large tank showed a discharge of 589N of water in 81 sec. at a head of 4.73. Measurement of the jet showed that it traveled 2.35m horizontally while dropping 0.0305m. Compute the three orifice coefficients.
4~ When flow velocity increases, it alters the shape of the flow velocity profile. Clarify 5~ What are the advantages and disadvantages of the pitot static tube. 6~ Does altering fluid temperature influences the results obtained by pitot static tube? clarify
Through the pipeline system in the figure calculate gauge and absulate presures at A and B
A course sand sample is placed in the constant permeameter test. Water passes through the sample water with a constant head of 40cm and after 0.00167hr, 40grams of water have been collected. What is the coefficient of permeability of the sand in cm/sec if the sample is placed inside a 166cm container with a 7.89cm radius?
a block (unit weight = 19.5 kn/m3) 0.55m square and 479mm deep floats on a stratified liquid composed of a 200mm layer of water above a layer of mercury (s.g. = 13.6). determine the position of the bottom of the block relative to the mercury surface in mm.
A constant-head permeability test is performed where the hydraulic gradient is 0.75. The crosssectional area of the sample is 0.25 ft2. The quantity of water flowing through the sample is measured to be 0.004 ft3/minute. (a) What is the coefficient of permeability in feet per minute? (b) What is the coefficient of permeability in millimeters per second?
2 When the pitot tube is moved vertically inside the pipeline, why does it yield different flow velocities? Explain 3~ If the pitot tube s not perfectly aligned with the current direction, it produces errors in the measurements of static pressure and total (pool) pressure, Why? Explain. 4~ When flow velocity increases, it alters the shape of the flow velocity profile. Clarify 5~ What are the advantages and disadvantages of the pitot static tube. 6 - Does altering fluid temperature influences the results obtained by pitot static tube? clarify

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