Constant head permeability tests were performed height of the two specimens (Ls1: Ls2) is 1.5, the ratio of the diameter of specimens (Ds1:Ds2) is 0.5. and the ratio of the constant head (h.:h) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (k1:k2) is

Constant head permeability tests were performed height of the two specimens (Ls1: Ls2) is 1.5, the ratio of the diameter of specimens (Ds1:Ds2) is 0.5. and the ratio of the constant head (h.:h) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (k1:k2) is

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.11P

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Q- Constant head permeability tests were performed on two soil specimens. S1 and S2. The ratio of height of the two specimens (LS1 : LS2) is 1.5, the ratio of the diameter of specimens (DS1: DS2) is 0.5, and the ratio of the constant head (hs1: hS2) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (ksl: kS2) is.......
2. A constant head laboratory permeability test an o fines and gives the following values Length of specimen - 254 mm Diameter of specimen -63.5 mm Head difference=457 mm Water collected in 2 min -0.51 cm^3 Determine these values o. Hydraulic conductivity, k, of the soil (cm/sec) b. Discharge velocity (cm/sec) c. Seepoge velocity (cm/sec) The void ratin of the soil specimen is 0.46.
• Constant head permeability tests were performed on two soil specimens, S1 and S2. The ratio of height of the two specimens (Lej:L2) is 1.5, the ratio of the diameter of specimens (D:D) is 0.5, and the ratio of the constant head (hh) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (kik) is s1' 's1
Constant head permeability tests were performed on two soil specimens, S1 and S2. The ratio of height of the two specimens (Ls1: Ls2) is 1.5, the ratio of the diameter of specimens (DS1:DS2) is 0.5, and the ratio of the constant head (hs1:h52) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (K51: K52) is
Constant head permeability tests were performed on two soil specimens, S1 and S2. The ratio of height of the two specimens (Ls1: Ls2) is 1.5, the ratio of the diameter of specimens (Ds:Ds2) is 0.5. and the ratio of the constant head (h:h) applied on the specimens is 2.0. If the discharge from both the specimens is equal, the ratio of the permeability of the soil specimens (k,:k2) S1 's1 is
Afalling-head permeability test is performed on a fine-grained soil. The soil sample has a length of 120 mm and a cross-sectional area of 600 mm2. The water in the standpipe flowing into the soil is 0.60 m above the top of the sample at the start of the test. It falls 50 mm in 30 minutes. The standpipe has a cross-sectional area of 200 mm2. (a) Make a sketch of the described conditions. (b) What is the coefficient of permeability in millimeters per second? (c) What is the coefficient of permeability in feet per minute? (d) On the basis of the calculated value for khyd, what is the probable soil type?
7.1 Refer to the constant-head arrangement shown in Figure 7.5. For a test, the following are given: L = 450 mm A = area of the specimen = 23 cm² Constant-head difference = h = 700 mm %3D Water collected in 3 min = 350 cm3 Calculate the hydraulic conductivity (cm/s).
During Atterberg limit tessts in the Naboratory,the studens obtained the following results froma clayey soil. Wumber of Blows (N) Molsture Content \ 38/4 16 36/5 20 33.1 28 2/7 0 Plastic limit tests: Students conducted two trials and found that PL= 17 2% for the first trial and PL = 18.4% for the second trial. Assume that the liquid limit of the soil iS LL= 29.0% a. Determine the flow index. b. Determine the liquidity index of the soil if the in situ moisture content is 22.0%.
Q.1/A) Choose the correct statement (answer 5 only). 1. During the consolidation the........................remains constant. (a) void ratio (b) pore water pressure (c) degree of saturation. ..........increases. 2. The consolidation takes place when...... (a) Toatal head (b) Effective stress (c) Total stress. 3. During seepage through a soil, direction of seepage is always (a) Parallel to equipotential lines, (b) Perpendicular to stream lines, (c) Perpendicular to equipotential lines, (d) None of these. 4. Flow net is used for the determination of (a) Quantity of seepage (b) Hydrostatic pressure (c) Seepage pressure (d) All of them. 5. Both the shear stress and the normal stress on the plane of failure are measured directly in (d) Unconfined (a) CD triaxial shear test (b) CU triaxial shear test (c) Direct shear test compression test 6. In a consolidated undrained test on an over-consolidated clay, the volume of the soil sample during shear: (a) decreases (b) first decreases and then…
3- A sand sample is subjected to drainage cutting test with a hollow cylinder device. Rupture occurs with increasing internal pressure while external pressure is constant. At the moment of rupture, the external stress is 200 kPa and the internal stress is 300| Kilopascals - be. Internal and external radii of the sample are 40 and 60 mm. A) Obtain the angle of soil friction. B) At the moment of rupture, what is the axial stress applied to the sample?
In a permeability test conducted on a soil with e = 0.50 the discharge velocity was found to be 2.4 * 10 ^ - 1cm / s The seepage velocity is:
****PROVIDE STEP BY STEP SOLUTION SOLVING H1 AND H2 VALUES in part B***** 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, provide step by step solution solving h1 and h2 values.