SMTL101_Mod3_Demonstration Problems (Winter 2016)

SMTL101_Mod3_Demonstration Problems (Winter 2016) -...

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Demonstration Problem 3.1. The beam shown below is simply supported , meaning that it has one roller support and one pinned support. Given the following load configuration, calculate the two support reactions "A y " and "B y ": Step (1) Draw the free body diagram and assume that the two support reactions act vertically upwards: Step (2) Sum of the moments about support "A": For equilibrium: Σ M A = 0 - (20 * 1.5) - (30 * 3.5) + (B y * 5.0) = 0 - 30.0 - 105.0 + 5 B y = 0 B y = + 135.0 / +5
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