![]() The bending stress is therefore σ = 6.M/t² (from M/I = σ/y) The second moment of area of a unit width of a plate I = t³÷12 The pressure on the wall decreases linearly from a maximum value at its base to zero at the surface of the liquid, which is coincident with the top of the wall. Containment WallsĪ containment wall is a 2-D vertical plate intended to hold a liquid the full depth of its height. Protective WallsĪ protective wall is a 2-D vertical plate intended to resist wind or water pressure that is equal all over its surface. ![]() The variables that determine the properties of a material are its Poisson's ratio (ν) and its Young's modulus (E). The material from which a wall is manufactured will determine its ability to resist an applied load, in terms of both stress and deflection. DimensionsĪ wall is rectangular with a dimensional ratio of 'width:height' that can be anything between 0 and 10 Materials ![]() a box)įig 1 shows some examples of a wall with 3 edges fixed. The plate width is the horizontal distance between its vertical stiffeners or edges and its height is the vertical distance between its footings and its upper rim.Ĭ) a change in direction of the wall (e.g. The other three edges may be fixed or free to deform under load.Įdge stiffeners constitute the outer limits of the wall width or height, each of which requires a minimum rigidity (second moment of area) in order to prevent a specified displacement rate (δy). The bottom edge of the wall or barrier is always fixed.
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