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TOPIC 04: Influence Line (IL) Problem 04 Given the 2-D beam structure [shown in Fiqure 81, with the following data: A moving concentrated (downward) force 1 Kip, which can travel the entire beam ABC (from A to C) Joint A is a FREE joint; Joint B is a PINNED support, and joint C is a ROLLER support; Joint C has a ROLLER support; Joint D is a FREE joint AB = 18 (notes: AD = 12 and DB-6); BCz 12 (a) Draw the Influence Line (IL) for the Reaction force at the PIN support joint B?? (b) Draw the Influence Line (IL) for the INTERNAL SHEAR force at joint D ?? (c) Draw the Influence Line (IL) for the INTERNAL MOMENT at joint D ??
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