3. A Darcy apparatus (permeameter) with an unknown sedimenthas a radius of 15 cm and a discharge of 0.0003 m³/s. If thedistance between the two manometers (aka piezometers) outputsalong the sediment column is 50 centimeters and the differencein water height in them is 10 cm, what is the hydraulicconductivity of the sediment in the apparatus?water inputALsandpackwater output

Explanation: Darcy's Law OverviewDarcy's Law describes the flow of a fluid through a porous medium…

Answered: 3. A Darcy apparatus (permeameter) with…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter8: Seepage

Section: Chapter Questions

Problem 8.1CTP

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3. A constant head permeameter has an internal diameter of 62.5 mm and is fitted in the side with three manometer tappings at points A, B and C. During tests on a specimen of sand the following data were recorded: Test no. 3 Quantity of water collected in 5 min. 136.2 ml 184.5 ml 309.4 ml Manometer level (mm) above datum A 62 112 B 90 122 175 Length between tapping points: A-B 120 mm B-C-125 C 117 164 244
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A column analysis of a flocculating suspension is run in the apparatus shown below. Theinitial solids concentration is 320 mg/L. The resulting matrix is shown below. What willbe the overall removal efficiency of a settling basin which is 2.5 m deep with a detentiontime of 2 hr?
Lecturer: Roozbeh Safaeian Amoly Duration: 90 minutes 1. A soil sample 15 cm in diameter is placed in a tube 3 m long. A constant supply of water is allowed to flow into one end of the soil at A, and the outflow at B is collected by a beaker as shown in the figure. Determine (a) hydraulic gradient, (b) flow rate, (c) average velocity, (d) seepage velocity if e 0.7, and (e) hydraulic conductivity, if the average amount of water collected is 3 cm' for every 20 seconds. 10 kPa ttt 1.4 m 1.5m- 15m- 15m-- 1.5m- B Soil C. Exit Datum 2m 1-5 m 15m 11:00 口 4) 2.06.2021
Lecturer: Roozbeh Safaeian Amoly Duration: 90 minutes 1. A soil sample 15 cm in diameter is placed in a tube 3 m long. A constant supply of water is allowed to flow into one end of the soil at A, and the outflow at B is collected by a beaker as shown in the figure. Determine (a) hydraulic gradient, (b) flow rate, (c) average velocity, (d) seepage velocity if e 0.7, and (e) hydraulic conductivity, if the average amount of water collected is 3 cm for every 20 seconds. 10 kPa 1.4 m F 1 5m-- 15m-- 1sm-l- 1.5m-| B A Soil 2m Exit Datum 1.75 m 15m
A constant head permeameter, 85 mm in diameter containing fine sand sample 450 mm long, allowed water to flow at a rate of 184 mL/min under steady flow conditions. Given the difference in head between two points 240 mm apart was 375 mm, determine the coefficient of permeability in mm/s. When the same sample size is tested in a falling head apparatus using a stand-pipe of 32.5 mm diameter, calculate the time required for the water in the stand-pipe to drop from 1750 mm to 1000 mm above the outflow level.
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PIEZOMETERS HAVE BEEN PLACED ALONG THE DIRECTION OF FLOW IN A CONFINED AQUIFER THAT 13 30 m THICE. APART. THE DIFFERENCE IN PIEZOMETER HEAD IS 1.4 m ASSIMING THAT THE ACGDIFER IS ALMSST MADE OF FINE SAND, CALCULATE THE FOLLOVING TWO THE PIEZOMETERS ARE 280 m. a) THE TRAVEL TIME OF WATER FLOW THE PIEZOMETERS? BETWEEN b) THE DISCHARGE?. 4 c) THE DARCY VELOCITY?
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Q1) The data in the table below used to design a sedimentation tank with depth=4m and detention time=2hr, the influent flow is 2000L for each minute. 0.004 0.01 0.02 0.03 0.04 0.05 0.063 0.085 0.12 Settling Velocity(cm/sec) Weight fraction 98 95 Greater than size % 8 6 4 3 2 1 0.5 Determine the overall removal efficiency for this tank, s.g. of particle=1.2 u=0.89x10-³N.s/m². Use Ax=0.1. Q2) For the above question find the depth of sludge for each day if the influent solid concentration is 3000mg/L and percentage of solid=8% and sludge density =1.2 ton/m³.
Solve 8-22 show all the work please. State your answer in Tons/Day.

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