For the flow net shown below, the soil saturated unit weight is 20 kN/m³, water unit weight is 10 kN/m³, calculate: (k = 1.9 × 10-Sm/s, Hupstream=13.6294) %3D (3) Head difference (H)=? (1) (m) Nf=? (2) Nd=? if the datum at the ground surface, the total (4) head (ht)=? (m) the quantity of seepage under the dam=? (m³/s (5) per m) the pressure head (hp) at point A=? (m) (6) the pressure head (hp) at point B=? (m) (7) ?=the exit hydraulic gradient (ie) (8) ?=the factor of safety against the boiling (F.S) (9) 2m 20m 15m 0.9m 13m 13m 22m B Impermeable Rock

For the flow net shown below, the soil saturated unit weight is 20 kN/m³, water unit weight is 10 kN/m³, calculate: (k = 1.9 × 10-Sm/s, Hupstream=13.6294) %3D (3) Head difference (H)=? (1) (m) Nf=? (2) Nd=? if the datum at the ground surface, the total (4) head (ht)=? (m) the quantity of seepage under the dam=? (m³/s (5) per m) the pressure head (hp) at point A=? (m) (6) the pressure head (hp) at point B=? (m) (7) ?=the exit hydraulic gradient (ie) (8) ?=the factor of safety against the boiling (F.S) (9) 2m 20m 15m 0.9m 13m 13m 22m B Impermeable Rock

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.14P

See similar textbooks

Similar questions

For the two-dimensional flow system shown below (units in meters):Compute the total flow rate under the Dam. X = 4, Y = 8. Note 1: Point A is located in the middle point of the equipotential lines. Point B is located in the middle point of the flow lines.Note 2: Assume e=0.8 (void ratio) and k=10^-3 cm/s (coeff. of permeability).Note 3: Datum is located at the bottom level of the water (right side of Dam).Note 4: Remember, the figure is drawn to scale. So, use the value of 2X+Y to estimate any dimension that you consider necessary.
Refer to Figure 6.14. Find the flow rate in m3 /s/m length (at right angles to the crosssection shown) through the permeable soil layer given H = 3 m, H1 = 2.5 m, h = 2.8 m, L = 25 m, a = 10°, and k = 0.04 cm/s.
Suppose that a stable hydraulic jump forms between the two sluice gates shown in Figure 5.15. If the flow depth downstream of a sluice gate is 61% of the gate opening (yg), determine the downstream gate opening (yg2) for the following conditions: y1 = 0.61 m, Q = 15 m3/s, b = 5 m. (Hint. Assume no loss of energy through a sluice gate.)
Consider a rectangular channel of width b=7.5 m, in which the hydraulic jump occurs and one of its stays is equal to 45 cm. A flow rate Q=54 m3/s passes through the channel. Determine: a) the other conjugate tie rod b) energy losses c) type of jump that occurs d) jump length
Find the rate of flow in m^3/sec/m (at right angles to the cross-section shown in Figure 7.33) through the permeable soil layer. Given: H 4 m, H1 2 m, h 2.75 m, S 30 m, a 14°, and k 0.075 cm/sec.
The following figure shows and inclined aquifer at 100 to the horizontal. The difference in water level between to observation points of 60 m is 5 m. Determine the discharge through the aquifer per unit width if k = 0.7 mm/sec. The depth of aquifer normal to the direction of flow is 2.95
Determine the elevation of the upstream reservoir (A) in Figure P4.1.2 if the downstream reservoir(B) is at 750m, the flow rate ((water at 20 ℃) through the smooth concrete pipeline is ,1.2m^3/secgiven the following: pipes 1 and 2: 100m long (D=0.5m) valves 1–2: fully open globe valve expansion 2–3: D=0.5m to 1.0m pipe 3: 100m long (D=1.0m) pipe 5: 50m long (D=0.5m) pipe 6: 50m long (D=0.5m) confusor 4: loss coefficient of 0.3 bend 5–6: loss coefficient of 0.2
1. For the flow net shown in the figure below, if the datum is selected at the downstream water surface, determine: (a) the total head at point b; (b) the pressure head at point b if point b is 11 m below the downstream ground surface (or 13 m below the downstream water surface);
For a given dam in the figure below,(A) Compute the flow rate q under the dam(B) Compute the water pressures at the heel (A) and toe (B) sections of the dam base Assume Nf = 3 and Nd=8
Given:(2 decimal places) h = 1.4 H = 1.1 m K = 4.87 x 10-2 cm/sec θ = 14° L = 36 m a.)Find the hydraulic gradient. b.)Compute the cross-sectional area of the figure in m2. c.)Solve the rate of flow in m3/hr.
determine the flow that comes out into the atmosphere in F, tabulate and plot the hydraulic gradient line of the system shown. Ya= 11m diameter 2= 18 cm L2= 85 m
Determine the slope of the channel bed, expressed in the unit of horizontal length to vertical length, given the cross-sectional area of 8 square meters, the wetted perimeter of 8 meters, a volumetric flow rate of 33.33 cubic meters per second, and a Manning's coefficient of 0.012, using the hydraulic principles and the Manning's equation for open channel flow.