The following results of a falling head permeability test. Calculate the permeability of the soil sample Diameter of sample: 100 mm Diameter of feeder pipe: 20 mm Length of sample: 500 mm Flow through the sample: 1.3 l/s Distance between tappings: 450 mm Head loss: 1650 mm

The following results of a falling head permeability test. Calculate the permeability of the soil sample Diameter of sample: 100 mm Diameter of feeder pipe: 20 mm Length of sample: 500 mm Flow through the sample: 1.3 l/s Distance between tappings: 450 mm Head loss: 1650 mm

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.2P

See similar textbooks

Related questions

Q: The thin walled cylinder diameter whose diameter is 6.24 meters and thickness of 15mm. is subjected…

Q: How are occupants alerted to the presence of carbon monoxide and natural and propane gas?

Q: For the given reinforced T-section shown in Figure 2 with fc’= 30 MPa, fy = 400 MPa, calculate the…

A: According to the specifications, first we will calculate the compression and tension type of force.…

Q: Analyze frame structure using force method of analysis as 2 shown in figure to draw the moment…

Q: cables having total area Ap = 0.575 in^2. Eccentricity of the steel varies parabolically from 0 at…

A: Given that (a) AP = 0.575 in2span = 30 ft counter =475 psi effective stress instead…

Q: 2. A frame is made up of a vertical member AB of length L, which is fixed at A and a horizontal…

Q: Determine the maximum torque that can be applied to a hollow circular steel shaft of 102mm outside…

Q: 3 cm 7 cm 6 cm Determine the Following

Q: A precast concrete pile weighing 35 kN is driven by a drop hammer weighing 50 kN and having an…

A: Allowable load = Ultimate load/FOS

Q: Problem -07 An industrial waste water enters a stream having a BOD concentration of 10 mg/L and a…

Q: A piece of wood floats in water with 55 mm projecting above the water surface. When placed in…

Q: Determine the nominial moment strenght oF the beam

A: Nominal moment strength: - It is the maximum bending capacity of beam after that beam will fail in…

Q: A screw Jack has a square thread of 75 mm mean diameter and a pitch of 15 mm.

A: Given data: d=75 mm=0.075 mp=15 mm= 0.015 mμ=0.05lever (L)=500 mm = 0.5 mLoad to be lowered (W)=25…

Q: Problem 4.7. Determine the runoff volume in millimeters (in.) of depth from 50-year return period…

Q: Determine the reaction at the roller support B of the beam shown 50 kN B 6 m 6 m actual beam (a)

Q: 8. The BODS of a waste sample was found to be 160 mg/L. The initial oxygen concentration of the…

Q: A pipe line consists of successive pipes with different sections: 380-mm, 300-mm, and 250-mm pipe.…

A: This question is related to the Fluid Mechanics.

Q: Below is a link to an intersection. Provide two different design solutions that would reduce…

Q: Given Water at 75°C is flowing in a standard hydraulic copper tube, 15 mm OD x 1.2 mm wall, at a…

Q: 16N, 6 = 7. For a vertical retaining wall 5 m high with level backfill and the properties y = 32°, &…

A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…

Q: What is the Maximum moment in kN-m. Given: w = 18, a = 1, b = 6, and c = 1.

Q: 1. A thin walled cylinder whose diameter is 9.73 meters has a thickness of 18 mm. What is the…

Q: LINES DISTANCE (m) BEARING LATITUDE DMD DOUBLE AREA АВ 56 N 33°10' E BC ? S 76°16' E CD 95 DE 46 S…

Q: 1 DROW Hhe shean and B SM 4m moment diegnom.

Q: 1. Compute the force in each member of the Warren truss shown in Fig. 1000 lb 3000 Ib MATHalino.com…

A: Analysis of Warren truss is as follows:

Q: If you have a two-storey building with dimensions of 40 x 48 and the mixing ratio is 1:1.5:2.5, the…

A: Concrete= Volume of concrete = 4000 cum Ratio Sum= 1+1.5+2.5= 5 Volume of cement = 800 cum =…

Q: The system in the figure shows fours applied forces and a 50 kN-m couple, answer the following…

A: Find The line of action of the resultant force is at a perpendicular distance.m from point A

Q: Determine the vertical clearance at the left ve in meters.

Q: The two lines shown are the EGL and HGL of a pipeline. Which statement is true? B O There is pump at…

A: EGL = summation of pressure, velocity and datum head HGL = hydraulic grade lines is a summation of…

Q: Rapid Sand Filter - Example • Determine the minimum number of rapid sand filters necessary to treat…

Q: The dry weight of a sample is 330 g, and its weight when saturated with water is 360 g. The apparent…

A: We have to determine the porosity of the sample and assuming the sample is coated with a material of…

Q: A shaft is made of bronze at length AB and steel at length BC fixed at both ends. It is subjected to…

A: The behavior of the stress component of the shaft because of the torsional moment acting on it is…

Q: A rectangular footing is to be used to support a 400x700 (*400mm side is parallel to the long…

A: Given data size of column = 400x700 Dead Load = 650KN Live Load = 880 KN Size of one side footing =…

Q: Problem 1 In the two-peg of a dummy level, the following abservation are taken. INSTRUMENT SET UP…

Q: 3 cm 7 cm 5 cm 5 cm Determine the Foll oeing %3D A = ト

Q: Problem 3 Below is a profile level notes, indicate the missing data, show arithmetic check, and draw…

A: station B.S H.I F.S I.F.S Elevation BM1 1.08 36.56 35.48 1+000 2.01 34.55 1+020…

Q: Subject: Civil Engineering Instruction: Modify if TRUE or FALSE. Explain your answer. 1.…

A: Instantaneous acceleration of a body is the time derivative of its velocity This statement is true…

Q: Draw Gantt-Chart for the following activities, define the located activities on the critical path,…

Q: Rib m. Q-6: Water flows in a confined aquifer from a fully penetrating river with a piezometric head…

Q: How many Zero-Force members? YP1 YP2 O A) 3 B) 4 C) 1

A: This is a question of Structural Analysis based on rules to find zero force members in a truss.

Q: A stream has a width of 25 m and depth of flow 2.5 m. The mean velocity of the flow is 1.10 m/s.…

Q: A elay fill has a bulk density of 1.9 g/ee. If the moisture content is 17.8% find the dry density

Q: ed concrete beam has a width of 380 mm, effective depth of 570 mm and carries a uniform live load of…

Q: Suppose the pump as shown in the figure is operating at free delivery conditions. The pipe, both…

Q: The length of the spiral curve is 260 ft with a degree of the central curve equal to 4°. Use g=…

A: Given Length of spiral curve= 260 ft Degree of curve= 4°

Q: So k 40 kN/m lo lkNn 20 kNn In + 2mtant 3.

A: Provided problem with diagram , is solved. As per the asked details.

Q: m 4.11. Assuming a dimesionless hydrograph is applicable, determine the duration of flow if the peak…

Q: The two lines shown are the EGL and HGL of a pipeline. Which statement is true? A B (D Velocity of…

A: solution HGL stands for hydraulic gradient line EGL stands for energy gradient line HGL is the line…

Q: A vertical summit curve is having tangents which intersects at point Pl at Station 12+428.3 and…

A: Pl at Station 12+428.3 142.75 meters elevation

Q: 4/115 Calculate the x- and y-components of all forces act- ing on each member of the loaded frame.…

Concept explainers

Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.

Question

The following results of a falling head permeability test. Calculate the permeability
of the soil sample

Diameter of sample: 100 mm
Diameter of feeder pipe: 20 mm
Length of sample: 500 mm
Flow through the sample: 1.3 l/s
Distance between tappings: 450 mm
Head loss: 1650 mm

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Laboratory determination of hydraulic conductivity

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.
For a falling a head permeability test, the following data were recorded. Length of soil specimen = 500 mm. Area of soil specimen = 16 cm2 Area of stand pipe = 0.97 cm2 Head difference at time t =0 is 760 mm. Head difference at time t = 6min. is 410mm. The test was conducted at a temp. of 20 ֯C. with a unit wt. of water equal to 9.789 kN/m3 and the viscosity of water at 20 ֯C is 1.005 x 10-3 N.8/m2 . Compute the hydraulic conductivity of the soil. Compute the absolute permeability of the soil. What is the head difference at time t = 4 min?
The data from a falling head test is shown Diameter of the standpipe = 3cm Initial head = 91.77 cm duration of the test = 18 mins length of the soil sample = 32.98 cm diameter of the permeameter = 44 cm If the soil permeability id 0.005cm/min, determine the final head (in cm) of the permeability test.
FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. a) Compute the permeability based on these test conditions and results. b) A falling head test is conducted on the same soil specimen at the same time (t1 – t2 = 100 sec), and the standpipe diameter is 0.8 cm. If the average head during the test should be 18 cm, what are h1 and h2 values?
FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. Provide step by step solution. a) Compute the permeability based on these test conditions and results. b) A falling head test is conducted on the same soil specimen at the same time (t1 – t2 = 100 sec), and the standpipe diameter is 0.8 cm. If the average head during the test should be 18 cm, what are h1 and h2 values?
The data from a falling head test is shown. Diameter of standpipe: 5 cm. Initial Head: 92.45 cm. Duration of test: 14 min. Length of soil sample: 32.29 cm. Diameter of permeameter: 44 cm. If the soil permeability is 0.0056 cm/min, determine the final head (in cm.) of the permeability test. Round off to two decimal places.
pls ans soon as posssible During a constant head permeability test on a sand sample, 260ml of water was collected in 2 min. If the sample had a length of 100 mm, a diameter of 40 mm and a maintained head of 200 mm, what is the coefficient of permeability?
One cubic foot soil test pit , weigh 100 pounds net weight. The dry weight of the sample is 80 pounds. Calculate the effective unit weight of the soil if it is submerge below the ground water level when the specific gravity is 2.6
For a soil with a specific gravity of 2.70, prepare a chart in whichunit weight (range of 10-25kN/m3) is plotted as ordinate and voidratio (0.2-1.8) is plotted as abscissa. Plot for three percentages ofsaturation 0, 50%, and 100%.
A falling head permeability test is to be performed on a soil sample whose permeability is estimated to be about 3x10-5 cm/s. What diameter of the standpipe in mm should be used if the head is to drop from 27.5cm to 20.0cm in 5 minutes and of the cross-sectional area and length of the sample are respectively 15cm2 and 8.5cm?
The data from a falling head test is shown. Diameter of standpipe: 5 cm. Initial Head: 92.68 cm. Duration of test: 19 min. Length of soil sample: 30.64 cm. Diameter of permeameter: 43 cm. If the soil permeability is 0.008 cm/min, determine the final head (in cm.) of the permeability test. Answer: 64.22
Calculate the coefficient of permeability of a soil sample of 6 cm is height and 50cm2 in cross sectional area, if the quantity of water equal to 450ml passed down in 10minutes under an effective constant head of 40cm. On oven drying, the test specimen weigh 495g. Take Gs as 2.65, calculate the seepage velocity of water during test.