Given the following conditions: Q = 0.05 m3/s P1 = 12.5 kPa P2 = 11.5 kPa P3 = 10.3 kPa Find HL (1-3) P1 P2 2) = 50 mm 4 = 50 mm 10m %3D P3 d. = 30 mm %3D
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- DESIGN Situation No. 1 – A pressure vessel 360 mm in diameter it to be fabricated from steel plates. The vessel is to carry an internal pressure of 6 MPa. 1. What is the required thickness of the plate if the vessel is to be cylindrical and the allowable steel stress is 120 MPa. 2. What is the required thickness of the plate if the vessel is to be spherical and the allowable steel stress is 120 MPa. 3. If the vessel to be fabricated is cylindrical using 12 mm thick steel plate, what is the maximum internal pressure that the vessel can carry if the allowable steel stress is 60 MPa.The work cylinder of a hydraulic system is acted by a hydraulic pressure of 400 psi while the maximum load of the piston is 6000 lbs. if the allowable tensile stress is 2300 psi, what is the required wall thickness of the cylinder. a.0.510 in. b.0.448 in. c.0.420 in. d.0. 512 in.L=9m W=5kN/m 360 UB 50.7
- (5) A gas engine valve spring is loaded to 35kgf when the valve is closed & 52kgf hen the valve is open. The valve lift is 8mm. The outside diameter is to be from 38mm~45mm, & the permissible stress is 413N/mm2 . Determine: (a) the wire & outside diameter; (b) the number of effective coils; (c) the free length when it is squared & ground.A tensile load of 330,000 N is applied to a copper pipe with maximum allowable stress of 110 MPa and 80 mm inner diameter. What should be the thickness of the pipe? Choices: A. 9.78 mm B. 12.35 mm C. 11.56 mm D. 10.55 mmA steel pipe has an inside diameter of d = 350 mm and an outside diameter of D = 158 mm. The length of the pipe is L = 5.0 m. The changes in dimension caused by an increase in temperature of 80°C for the: Outside diameter - ____ mm Inside diameter - ____ mm Lenght - ____ mm standard coefficient of thermal expansion steel: 11.25x10^-6/degrees
- Calculate the maximum permissible internal pressure with psi units, if a cylindrical pressure vessel has a 0.25 inches wall thickness and 24 inches inner radius. The material has a yield point of 200 MPa and a 3.0 adequate safety factor.Data:P = 2 kipd = 3.6 inchw = 305 millimeterst = 0.03 meterr = 5.08 centimeterh = 0.6667 feet a) Calculate the maximum static stress in the material (in MPa). b) Estimate the theoretical stress concentration factor at the fillet c) Estimate the theoretical stress concentration factor at the holeThe cross-section of an earth dam sitting on an impermeable base is shown in figure 2. Determine the critical failure surface and the center of the circle by assuming failure surface is circular. Use Bishop’s conventional or rigorous method.
- Mechanical design The maximum load in a rotating shaft is subjected to bending moment of 1 kN.m and a torque of 1 kN.m. The member is made of steel the Ultimate Tensile Strength 440 MPa, Yield Tensile Strength 370 MPa. With a safety factor of 4, kt = km = 1.5 and keyway stress consternation is presented. According to the maximum shear stress theory, the shaft diameter will be: a. 160 mm b. 74 mm C. 145 mm d. 92.5 mm e. 60 mm f. 66 mmThe manufacturing process of shats is usually done with: a) A uniform diameter b) Step diameters c) Reduced diameter at the middle and large at the ends d) Shoulders e) Non of the aboveA 4-T crane is used to lift a 3m x 1.2m x 200mm pre-cst panel. A preader beam is needed to ensure the proper distribution of load in the lifting chains. Consider modulus of elasticity, E=200,000 MPa, allowable shearing stress of lifting pin is 50 MPa, the steel plate used in the spreader beam has an allowable bearing stress of 40 MPa. (All measurement in the figure is in millimeters) 1. Determine the total load in kN, the crane has to carry the the lifting accessories (spreader beam, lifting chains and hooks) has a total mass of 720 kgs. if 2. Determine the average normal stress on each leg of the lifting chain A and B. 3. Determine the required diameter (d) in millimeters of the lifting pin if the allowable shearing stress must not be exceeded (Round to the nearest whole number). 4. Determine the required thickness (t) in millimeters of the steel plate to be used if the allowable bearing stress must not be exceeded. (Round to the neareat whole number)