Problem: An open channel is to be designed to carry 1.5 cms at a slope of 0.007. The channel material has an n value of 0.012. Let b=2d. A. Find the most efficient cross section (b in mm) for rectangular section. B. Find the Hydraulic radius.

2-53. Determine the smallest thickness b of the concrete gravity dam that will prevent the dam from overturning due to water pressure acting on the face of the dam. The density of concrete is p. = 2.40 Mg/m³. Hint: Work the problem using a 1-m width of the dam. 3 m 6 m A b

From the given figure. Determine the total active lateral pressure at the interface in kPa.

Hi, I need help with this question please. Thank you. A cantilever thin-walled cylindrical tube of inner diameter ? = 30cm and thickness ? = 1cm is subjected to a torque T and internal pressure p as shown below. The free end of the tube is closed. Strain gauges A and B mounted on the surface of the cylinder give readings ?? = 7.5 × 10^−6 and ?b = 19.7x10^−6, respectively. The bar is made of steel having Young's modulus E=200 GPa and Poisson's ration ? = 0.3. a) Determine the torque, T, and internal pressure, p. b) Determine the absolute maximum shear strain ???? at point C.

A) Water at 70 °C flows up a 50-ft-long conical pipe with its centerline sloping at 5° to the horizontal, as shown in figure (1). At its lower end the diameter is 24 in, the water pressure is 15 psi; at its upper; outlet end the diameter is 18 in and the water pressure is 12.5 psi. By a method, the shear stress found to be 0.25 lb/ft². Assuming this value to be non-varying, calculate the flow rate. given = 62.30 lb/ft³ 18 in dia Q-? 24 in dia.. 15 pe soft 7₂-0.75 46/4² Figure (1) 12.6 pri

Two parallel plates kept 295mm a part have laminar flow of oil . The lower plate is stationary and the upper plate is moving with 4.75m/s . find: a- velocity distribution formula. b- The value and position of the maximum velocity. c- The discharge per meter width. d- The shear stress at the plates. e- The difference in pressure between two points 50m apart. f- The velocity gradient at the plates. g- The velocity at 130 mm. Assume viscosity of oil to be 24.5 poise.

2) Consider a cylindrical vessel that is subjected to both an internal pressure p and an applied torque Tat the ends (as shown). Using Mohr's circle, find the principal stresses and maximum shear stress in the wall of the tank. Assume an inner cylinder radius r = 25 inches, wall thickness t = 1 inch, applied torque T = 1500 kips-in and internal pressure p = 30 psi. [Ans. to Check opi=981.8 psi] P T T

Problem 3. The strength per meter of the longitudinal joint in the figure is 480 KN whereas the girth joint is 200 KN. Determine the maximum diameter of the cylindrical tank, if the internal pressure is 1.5 MN/m?. Longitudinal Joint Girth Joint:

Sum of the length of the solid boundaries of the section in contact with the fluid is known as OA. Wetter Surface O B. Wetted Perimeter O C. Hydraulic Path D. Hydraulic Radius

SITUATION 8: A suspended bar system consists of two cross sections as shown in the figure. Initially its lower surface is 0.8 millimeters above the ground surface. Take E=205 GPa. 80 I1.2 m mm? 160 40 kN mm2 0.8 mm 20. Determine the stress in the 160 mm2 section when a load of 40kN is applied as shown. a. 90.8 MPa b. 204.6 MPa с. 318.3 МPа d. 147.7 MPa 21. Determine the stress in the 80mm2 section when a load 40 kN is applied as shown. а. 90.8 MPа b. 204.6 MPa с. 318.3 МРа d. 147.7 MPa |42.4 m>4