Please write legibly, complete solutions, avoid rounding off intermediate values, thanks. A masonry dam as shown has a coefficient of permeability in the vertical and horizontal direction of Kz=4.5m/day and Kx=6m/day,respectively.Assume length into the paper =35m and base width = 40m.24 ma) Determine the seepage (lit/sec) into the downstream side per meter of the dam.0.525 lit/secb) Calculate the average of the pressure of the toe and heel of the dam in kPa.c) Calculate the total uplift force in x10^3 KN.

To Find :- a. Seepage pressure per meter length of dam in lit./sec b. Average of pressure of to and…

Answered: A masonry dam as shown has a…

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.3P

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The dam shown has a base of which 2m below the ground surface. The pressure distribution diagram at the base of the dam can be obtained from the equipotential lines as follows: k=4.5 m/day. if H=6m determine the seepage through the foundation.
A masonry dam has a coefficient of permeability in the vertical and horizontal directions of Kz=4m/day and Kx=5m/day, respectively. The difference in the head is 18m and the distance between the base of the dam and the downstream water surface is 18m. Assume z=35m and width of dam = 40m. a. Determine the seepage flow (m3/day) b Determine the uplift pressure (kpa) at A. c. Determine the uplift force (x10^3 kN) acting in the dam. Assume that the uplift pressure under the dam varies uniformly.
A masonry dam has a coefficient of permeability in the vertical and horizontal directions of kz=4m/day and kx=5m/day, respectively. The difference in the head is 18 m and the distance between the base of the dam and the downstream water surface is 18m. Assume z=35 m and width of Dam =40m Determine a) the seepage flow b) the uplift pressure (kpa)at point A C) the uplift force (Kn) acting in the dam. assume that the uplift pressure under the dam varies uniformly
seepage is occurring through the sandy layer underneath the concrete dam.Given: upstream water level = 15.8 m; downstream water level = 2.1 m; thickness of the sandy layer = 1.1 m; coefficient of permeability of the sandy layer = 0.0081 cm/s and L = 48 m. Determine: 1.The seepage flowrate per unit length of the wall in m3/hr/m. 2.Quantity of seepage per day if the dam is 400 m long.
CALCULATION USING DARCY'S LAW An aquifer system is formed by two horizontal layers. Two piezometers were installed for monitoring, the distance between them is 885m. The upper layer (A) has a thickness of 39m and K = 1.3 x 10-5 m/s and the lower layer (B) has a thickness of 25m and K = 2.7 x 10-6 m/s. THE hydraulic load in the PZA is 60m and in the PZB it is 40m. Calculate the flow and the transmissivity of each layer.
Refer to Problem 8.4. Using the flow net drawn, calculate the hydraulic uplift force at the base of the hydraulic structure per meter length (measured along the axis of the structure).8.24 For the hydraulic structure shown in Figure 8.24, draw a flow net for flow through the permeable layer and calculate the seepage loss in m3/day/m.
A concrete dam is 30 m long from upstream side to downstream end. The dam is situated on a 15-m-thick stratum of soil that has a coefficient of permeability equal to 0.5 m per day. Firm, hard clay and rock underlies thedescribed soil stratum. The base of the dam is installed at a level 2 m below the natural soil surface. Draw the flow net for seepage occurring beneath the dam, and compute the seepage in cubic meters per day per meter ofdam width (perpendicular to the paper), for the condition where the reservoir water against the upstream face of the dam is 18 m above the soil surface and the water level at the downstream end is at the soil surface.
Calculate the transmissivity of the confined aquifer if the flow is along the strata consist of a 3 layers. The upper layer consist of gravel of 400 cm having hydraulic conductivity of 2.0 cm/sec. The middle layer consists of the fine sand of thickness 300 cm, having hydraulic conductivity of 0.002 cm/sec. The bottom layer consists of coarse sand of thickness 400 cm, having hydraulic conductivity of 0.01 cm/sec.
Use 10 kN/m3 for unit weight of water. For a concrete structure that retains water, a flow net is sketched as shown in Figure H8-3. Noting the marked location of the Datum, answer the following: Mark on the figure all boundary Also mark the type of each boundary. Calculate the uplift pressures at points A, B, C, D, E, and F. Calculate the factor of safety against The seepage loss (q) per day per meter length of the (i.e. q in m3/day/m) if the permeability of the soil is k = 10-4 m/sec.
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trench 80 ft long is excavated 500 ft away and is parallel to a riverbank. A sand aquifer is 40 ft thick The river water surface is 50 ft above the horizontal bottom of the aquifer. If the water depth in the trench must be maintained at 10ft, at what rate must water be pumped from the trench? How far from the trench will the aquifer cease to be saturated? Use K of sand = 30 ft/day
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