9. From the figure shown: (See picture below)Cross-sectional area = 0.6m2Hydraulic Conductivity of sand = 0.1 cm/secWhat is the rate of upward seepage of water? (Answer: 360 cm3/sec)What would be the critical hydraulic gradient? (Answer: 1.12 m)What value of h to cause boiling? (Answer: 2.8 m) heaves or when its effective stress isbefore the bottom of the saturated clayclay.How deep can the excavation proceedheaves or when its effective stress iszero.Problem:From the figure shown:h=1.5m1.5mG-2:68é = 0.5.2.5mSandvalveopenIn flow

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Answered: heaves or when its effective stress is…

heaves or when its effective stress is before the bottom of the saturated clay clay. How deep can the excavation proceed zero. Problem: From the figure shown: h=1.5m 1.5m G-2:68

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 confined aquifer is shown in the figure. The aquifer has a hydraulic conductivity of 23 m/day and a void ratio of 0.78. The piezometric heads in the two observation wells L = 2140 m apart are 65 m and 60 m from a common datum. The aquifer has an average depth ot t = 36 m and average width of w = 4.72 km. Recharge 65 Aquifer t L 1. Determine the rate of flow of water through the aquifer, in m3/day. (IN 2 DECIMAL PLACES) 2. Determine the seepage velocity in cm/s. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) 3. Determine the time of travel in days from the head of the aquifer to a point 3 km downstream. (IN 2 DECIMAL PLACES)
FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A fine sand sample is placed into a permeameter that supplies a constant head of 100 cm ofwater. Water flows through the sample area of 20 cm2, and its length of 25 cm. If 850 ml of water is collected in 80 seconds, what is the hydraulic conductivity, kHYD in cm/s? a) Calculate the flow rate in cm3/s if the head is increased to 140 cm.
6 decimal places for the solution
please answer part a
Question 1: * Two observation wells have been constructed in the formation shown. The flow rate is 0.01 cu. m/hr per unit width of the formation. o Compute the hydraulic gradient o Compute the equivalent hydraulic conductivity o Compute the value of k2. * Note: Since the soil is layered differently compared to the given figure above. Check FAQ's. 5m 2.5m 20m K2=? Kj=15 m/day K3=10 m/day 300m 600m 400m -1300m-
← Darcy' Law 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
Please do it in a complete way, so I can easily understand it. Thank you to all of you
Answers: a) 360 cm3/sec b) 1.12 c) 2.8 meters
A falling head hydraulic conductivity test is performed on a sample of soil. The stand pipe having a diameter of 0.20cm is observed and it takes 60 seconds for the water to drop by 50 cm from an initial hydraulic head of 90cm. The sample has a length of 20cm, and a diameter of 4cm. a.Find the coefficient of permeability (cm/sec) b.Solve for the hydraulic gradient c. Compute the rate of flow of water in the soil. (cm' /sec.) 0.20 cm 6 s TAND PIPE 50cm Acm 不 20am -: SOIL
Refer to the figure. If H1 = 1.94 m, H2 = 2.37 m, h = 1.c m, e =0.49, Gs = 2.67,area of the tank = 0.64 m2, and hydraulic conductivity of the sand (k) = 0.3d cm/sec. What is the upward seepage force per unit volume of soil?
a. For Figure 2 below, calculate the effective hydraulic conductivity for flow parallel and perpendicular to layering. Show your work. Explain the difference in values. Figure 2 sand layer; K = 1 m/d; thickness = 5 d 10.5 m clay layer; K = 0.000001 m/d; thickness = 0.5 m sand laver: K = 1 m/d; thickness = 5 m b. Figure 3 below shows the effects of groundwater refraction, assuming that groundwater flow in the top layer is almost horizontal i.e., a = 89.8°, what is B and what can you say about the flow in the clay layer? a a K, b B K Figure 3.
Figure 1.11 Practice Problem 2: Refer to Figure 1.12. If Hi = 1.5 m, H2 = 2.5 m, h = 1.5 m, e =0.49, Gs = 2.66, area of the tank = 0.62 m², and hydraulic conductivity of the sand (k) = 0.21 cm/sec. a. What is the rate of upward seepage of water (m³/min)? b. Will boiling occur when h = 1.5 m? c. What would be the critical value of h to cause boiling? %3D %3D %3D 南) H H2 Valve (open) Inflow Figure 1.12