21% 1 8:19Mf Document 17.pdfThe data from à falling head test as shown inthe figure:Diameter of standpipeInitial headFinal headDuration of test.Length of soil sample....Diameter of permeameter is 40 cm.6 mm92 cm.85 cm.12 min.30 cm.Determine the coefficient of permeabilityin cm/min. at 20°C.Determine the hydraulic gradient.Determine the rate of flow of water in thesoil.O Compute the seepage velocity if theporosity of the soil is 0.25.Determine the coefficient of permeability itthe temp. during measurement was 22°C.(3)

Given; L=30cm t2=12min h1=92cm h2=85cm

The data from a falling head test as shown in the figure: Diameter of standpipe ..... Initial head ... Final head ... Duration of test. Length of soil sample Diameter of pemeameter is 40 cm. 6 mm 92 cm. 85 cm. 12 min. 30 cm.

The data from a falling head test as shown in the figure: Diameter of standpipe ..... Initial head ... Final head ... Duration of test. Length of soil sample Diameter of pemeameter is 40 cm. 6 mm 92 cm. 85 cm. 12 min. 30 cm.

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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A falling head permeability test sample 9.60 cm in diameter and 100 at the start of the test was 90 cm. The coefficient of on a soil mm long. The head was run permeability of the soil was found to be 5x 10-6 cm/s. The radius of the standpipe was 0.5 cm. a. Compute the rate of flow at the start of the test. b. Compute the potential head drop after 30 minutes. 11 C. Compute the rate of flow after 30 minutes.
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The permeameter in a perrneability test setup involves a soil sample 200 mm diameter and a length of 30 mm. The height of water is kept constant at 400 mm. In a duration of 4 min, water was collected in the graduated flask having a volume of 420 cu. cm. Determine the following. Flow Rate Hydraulic gradient Hydraulic conductivity
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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?
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