Situation 2 - It is required to construct the influence line for the beam shown in the figure. D, в C 2 m 1 m 3 m Which of the following most nearly gives the ordinate of the influence line for the vertical reaction at A at a point 4m from A. 4. Which of the following most nearly gives the ordinate of the influence line for the shear at D at a point 4m from A: 5. Which of the following most nearly gives the ordinate of the influence line for the moment at D at a point 4m from A: 6.

Q: The force F₁=50 N points to the East. The second force F2=100 N made with the first force an angle…

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Q: The beam below is subjected to a moving concentrated live load of 130 kN, a moving uniformly…

A: A beam as shown is hinged at end A and roller support at D and F. A moving load of 130kN, UDL live…

Q: The influence line for the reaction at B for the beam shown changes curvature between A and B;…

A: Given that there is curvature change between points A and B.

Q: Given: The beam is supported by the roller at A and a pin at B. Find: The reactions at points A and…

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Q: Use the Müller-Breslau principle to sketch the influence lines for the vertical reaction at A, the…

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Q: Determine the horizontal and vertical components of reaction at the pin A and the reaction of the…

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Q: solve for the internal forces at the midspan

A: Consider the figure,

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.