A sand sample of 35 sq. cm cross sectional area and 20 cm long was tested in a constant head permeameter. Under a head of 60 cm, the discharge was 120 ml in 6 min. The dry weight of sand used for the test was 1120 g, and Gs = 2.68 1. Determine the hydraulic conductivity in cm/sec. 2. Determine the discharge velocity in cm/sec 3. Determine the seepage velocity in cm/sec

A sand sample of 35 sq. cm cross sectional area and 20 cm long was tested in a constant head permeameter. Under a head of 60 cm, the discharge was 120 ml in 6 min. The dry weight of sand used for the test was 1120 g, and Gs = 2.68 1. Determine the hydraulic conductivity in cm/sec. 2. Determine the discharge velocity in cm/sec 3. Determine the seepage velocity in cm/sec

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

5. A permeameter of 8 cm diameter contains a sample of length 35 cm. Attachments are made it to enable conducting either constant head test or falling head test. The stand pipe used for conducting falling head test has a diameter of 2.5 cm. When constant head test was conducted the loss of head was 100 cm measured on a length of 25 cm. If the rate of flow was 2.7 cc/sec, calculate the coefficient of permeability of soil. If a falling head test is conducted on the same sample in the permeameter find the time taken for head to fall from 150 cm to 100 cm.
Problem G: For Problem 27 to 28. In a constant head permeability test the following are given L= 250 mm and A=105 cm?. If the value of k = 0.014 cm/secand flow rate of 120 cm3/min which is to be maintained. 27) What is the head difference, h in the specimen? b) 34.341 cm 28) Determine the discharge velocity in cm/sec? b) 0.109 a)34.136 cm c) 33.901 cm d) 34.014 cm a) 0.0189 c) 1.019X102 d) 0.019
In a field testing, the hydraulic gradient between two peizometers is 1.11, the area of flow is 4.08 m2 and the hydraulic conductivity of the aquifer material is 0.94 m/day, calculate the discharge in m3/day. Note that discharge cannot be negative
PROBLEM C For a falling head laboratory test, the following are the given values: • Length of soil specimen 210.00 mm Initial head 523.00 mm Final head 297.00 mm = Duration of test 3.50 mins 42.0 sq.mm 1050.00 sq.mm Area of standpipe Area of specimen A. Compute for the hydraulic conductivity of the soil in cm/sec. B. Determine the seepage velocity if n=0.35 C. Determine the head difference at t = 120 sec
7.7 In a constant-head permeability test, the length of the specimen is 200 mm and the cross sectional area is 78.5 cm². If k = 2.1 x 10-2 cm/sec, and a rate of flow of 130 cm³/min has to be maintained during the test, what should be the head difference across the specimen?
In a constant head permeability test in the laboratory as shown in Figure Q2(e), the data is recorded in Table Q2(b). The void ratio of the soil specimen is 0.46. Determine; (i) Hydraulic conductivity, k, of the soil in cm/sec. (ii) Discharge velocity in cm/sec.
Problem (3) The hydraulic conductivity of a sand specimen at a void ratio of 0.55 is 0.051cm/sec. Estimate its hydraulic conductivity at a void ratio of 0.7.
For a falling-head permeability test, the following values are given:• Length of specimen 8 in.• Area of soil specimen 1.6 in.2• Area of standpipe 0.06 in.2• Head difference at time t 0 20 in.• Head difference at time t 180 sec 12 in.Determine the hydraulic conductivity of the soil in in./sec
For a falling head permeability test, the following values are given: Length of specimen: 200 mm Area of specimen:1000 sq. mm Area of standpipe: 40 sq. mm Head difference at t= 0: 500 mm Head difference at t= 180 sec : 300 mm Determine the hydraulic conductivity (cm/sec)
a. Compute the liquid limit.b. Compute the plastic limit.c. Compute the natural water content.d. Compute the liquidity index.