I have been tasked to find the material thickness needed for a cylindrical shell with open ends. I have been given the internal pressure, the cylinder inside diameter, the Poisson's ratio and the allowable tensile strength. I have used Birnie's equation to solve (see attached file in thread: "Thick-walled cylinder material thickness") I believe the equation has been solved but would like to know if there is a different way to achieve the same, or different results and be able to compare. I am doubtful that the formula above may be too generic. Any direction on this? Pls forgive me... I have posted the same issue in thread: Thick-walled cylinder material thickness. I dont mean to break any rules, I just dont know how to post in the correct area. Please help me by either showing me the steps to post correctly in the correct area or by moving this thread for me to where it's supposed to be. Thnx!