PROBLEM 2 . A tank is in the shape of a frustum of a pyramid having a square section .The upper base is 3 m x 3m and the lower base is 1.5 m x 1.5 m with a height of 3 m.. Assume the tank to be initially full of water and use coefficient of fluctuation equal to 0.6 . Determine the time required to lower down the water surface 2 m through a 10 cm by 10 cm square orifice located at the bottom .

PROBLEM 2 . A tank is in the shape of a frustum of a pyramid having a square section .The upper base is 3 m x 3m and the lower base is 1.5 m x 1.5 m with a height of 3 m.. Assume the tank to be initially full of water and use coefficient of fluctuation equal to 0.6 . Determine the time required to lower down the water surface 2 m through a 10 cm by 10 cm square orifice located at the bottom .

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

A conical tank is inclined with an angle of 60°. A hole with radius 2-in was opened at the bottom. If initially the tank is full to a height of 9 ft, how long will the tank drain? Consider a coefficient of contraction, 0.6.
A rectangular trough is 10ft long and 3 ft wide. Find how fast the surface rises, if the water flows in at rate of 12 ft³/min.
An inclined circular gate with a diameter of 5.8 meter has water on one side. Calculate the location (in meters)of the center of pressure along with the inclination of the gate from the bottom. a=1.6 meters
A) what is the number of drop of the flownet? B) What is the flow of water in the unit of cm^2/min? C) What is the water pressure, u, at point A? (Assume the water unit is 10 kN/m^3) D) What is the total head at point B/ E) What is the water pressure at point B? (Assume the water unit is 10 kN/m^3)
An open horizontal tank 2 m high, 2 m wide and 4m. long is full of water. a) How much water is spilled out when the tank is accelerated horizontally at 2.45 misec in a direction parallel with its longest side? b.) What is the porce acting on the side with the greatest depth? c.) Compute the required accelerating force.
A 1.5 m diameter vertical cylindrical tank 3 m high contains 2.5 m of water. A 100 mm diameter circular sharp-edged orifice is located at its bottom. Assume c=0.6, how long will it take to lower the water level to 1 m deep after opening the orifice?
A sluice gate flows into a horizontal channel as shown in the figure. Determine the flow through the gate per meter width when y=1.0m and d1=6m. Assume that the pressure distributions at section 1 and 2 to be atmospheric and neglect losses in the channel. Use coefficient of contraction Cc= .85 and coefficient of velocity is Cv=.95.
Water flows in a rectangular open channel with a depth of y = 0.45 m and velocity of V = 1.45 m/s. What is the water level after a gradual step rise? Can you please explain it with steps and proof? a) The water level will rise b) The water level will drop.
If a steel rectangular gate of 1.2m wide by 1.75 m high, is located in the wall of a reservoir. It is hinged at the top and acts as a relief valve such that when the water level reaches 1.5m above the top of the gate the gate starts to open allowing water to leave the reservoir. If the gate is inclined at 55º to the horizontal, and the density of steel is 7, 600 kg/m3, determine the thickness of the gate.
There is X=5m high water on the left side of a 3.5 m wide vertical cover sitting on the hinge shown in the figure. On the right, a water jet with a cross-sectional area of A=1100 cm2 hits the cover. a) Determine the horizontal hydrostatic pressure force acting on the cover and the vertical distance of the impact point to the hinge. b) What should be the Q flow rate of the water jet so that the lid remains vertical? (gravity forces will be neglected)
3. The 500 mm diameter pipe conveys treated water to supply a municipality with a demand of 40 MLD. Determine the head loss in meter if the length of the pipe is 10 km considering that (a) friction factor f is 0.018, (b) Hazen-William coefficient C is 90, and (c) Mannings coefficient n is 0.015.
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.