A sand sample of 35 m² cross sectional area and 20 cm long was tested in a constant head permeameter. Under a head of 60 km, the discharge was 120 ml in 6 min. The dry unit weight of sand used for the test was 1120 g. and GS = 2.68 Take Sw = 1 g/ cm³ The hydraulic conductivity (in cm/sec) is 10-3 x ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

A sand sample of 35 m² cross sectional area and 20 cm long was tested in a constant head permeameter. Under a head of 60 km, the discharge was 120 ml in 6 min. The dry unit weight of sand used for the test was 1120 g. and GS = 2.68 Take Sw = 1 g/ cm³ The hydraulic conductivity (in cm/sec) is 10-3 x ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

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

See similar textbooks

Similar questions

PART IV: PERMEABILIT Y PROBLEM A For a constant head laboratory test on a fine sand, the following are the given values : • Length of the specimen • Di ameter of the specimen 14.0 inches 3.25 inches He ad difference 25.0 inches Water collected in 2.50 mins Void ratio A. Compute for the hydraulic conductivity of the soil in in/sec. B. Determine the discharge velocity through the soil in in/sec. c. Determine the seepage velocity in in/sec. 0.065 cubic inches 0.45
soil هفصشبكطودذؤ
I want the solution in less than 15 minutes
a completely dry sand sample fills a 200 cm 3 metal cylinder and weighs 260 g (Ws), having Ss = 2.6 Calculate e(void ratio), then complete the schematic. (see the picture). I WILL RATE IT.
****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.
The following results were obtained from a liquid limit test on a clay using the Casagrande cup device. Number of blows 12 20 28 32 Water content (%) 52.5 47.1 43.2 38.6 37.0 Two determinations for the plastic limit gave water contents of 22.8% and 23.2%. Determine (a) the liquid limit and plastic limit, (b) the plasticity index, (c) the liquidity index if the natural water content is 38% and (d) the void ratio at the liquid limit if G, = 2.7. (e) What is the soil state in the field? (f) Do you expect a brittle type of failure for this soil?
Ex.6: Drilling mud with 16 ppg density. The volume percentage of solids in it is (32%). Calculate the percentage of each on in the mud.
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.
Consolidated Undrained Test....
Sketch and explain the relationship between hydraulic conductivity and hydraulicgradient. If the gradient used in the laboratory is too high, will the measured hydraulicconductivity be higher or lower than the hydraulic conductivity expected in the field?Assume that the laboratory test is conducted on a specimen large enough to berepresentative of field conditions
(a) What is the pore water pressure at point A (kPa), and what is the effective stress at point A (kPa) ? (b) True or False: The effective strength at point A will increase if the groundwater table rises to the ground surface.
I need help with this question