Answered: A pipe carrying steam at 3.5 MPa has an…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A pipe carrying steam at 3.5 MPa has an outside diameter of 450 mm and a wall thickness of 10 mm. A gasket is inserted between the flange at one end of the pipe and a flat plate used to cap the end. How many 40-mm-diameter bolts must be used to hold the cap on if the allowable stress in the bolts is 105 MPa, of which 55 MPa is the initial stress? What circumferential stress is developed in the pipe? Why is it necessary to tighten the bolt initially, and what will happen if the steam pressure should cause the stress in the bolts to be twice the value of the initial stress? * Your answer A cylindrical steel pressure vessel 400 mm in diameter with a wall thickness of 20 mm, is subjected to an internal pressure of 5 MN/m^2. (a) Determine the safe stress between the tangential and longitudinal sections in the steel. (b) To what value may the internal pressure be increased if the stress in the steel is limited to 120 MPa? (c) If the internal pressure were increased until the vessel burst, sketch the type of fracture that would occur. * Your answer A water tank, 22 ft in diameter, is made from steel plates that are ½ in. thick. Find the maximum height to which the tank may be filled if the circumferential stress is limited to 6ksi. The specific weight of water is 1000 kg/m^3. * The wall thickness of a 4-m-diameter spherical tank is 3/4 in. Calculate the allowable internal pressure if the stress is limited to 60MPa * At what angular velocity will the stress of the rotating steel ring equal 30ksi if its mean radius is 5/4" ? The density of steel 7.85 Mg/m^3. * Calculate the minimum wall thickness for a spherical vessel that is to carry a gas at a pressure of 1400 psi. The diameter of the vessel is 2 ft, and the stress is limited to 12 ksi. * The tank shown in the given figure is fabricated from 3mm steel plate. Calculate the maximum longitudinal and circumferential stress caused by an internal pressure of 1MPa. * The strength of longitudinal joint below is 30 kips/ft, whereas for the girth is 53 kips/ft. Calculate the maximum diameter of the cylindrical vessel if the internal pressure is 150 ksi. *

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