Compute the reactive forces of the pin at A and the roller at B.

Q: Draw the influence line for shear force Vc. Enter the magnitude of your and G influence line when…

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Q: Determine the horizontal reaction in kips at the connection A of the gable frame. Assume that A, B,…

A: Consider the figure,

Q: The A-frame shown supports the 250-N load and 85-N load acting on horizontal member. It is hinged at…

A: To find pin reaction at B, C,D

Q: Problem 2) For the truss shown, solve for the influence line for member CH. The trucks run across…

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Q: iii) The structural member below is subjected to a couple moment M and forces F₁ and F₂. Replace…

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Q: G E 4 m A B |C - 3 m→-- 3 m-- 3 m¬-- 3 m→+ 3 m¬- 3 m-

A: Given truss:

Q: b.) Using the value for F1,min that you calculated in (a), replace the two forces F₁ and F2 with a…

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Q: The two forces are applied to the end of the boom OA. Determine the force F so that the resultant of…

A: Given:- The two forces are applied to the end of the boom OA The magnitude of one force = 200 lb The…

Influence Lines

The graphs that show the variation of a function at a specific point on a beam or truss due to a unit load placed at any point along the structure are known as influence lines in engineering. Some common functions that are studied with influence lines are shear, moment, and deflection. In designing beams and trusses, it is important to use influence lines in structures where loads would move along their span such as bridges, crane rails, conveyor belts, floor girders, etc. The influence lines help to study where a load will create the maximum effect for any of the functions.