daphnelee-mh
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I am confused why positive value of bending moment is plotted under the axis?
Question about plotting a Bending Moment Diagram
- Context: Engineering
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I am confused why positive value of bending moment is plotted under the axis?
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It is just a convention.
Please, see:
https://en.m.wikipedia.org/wiki/Bending_moment
https://en.m.wikipedia.org/wiki/Shear_and_moment_diagram
"In structural engineering and in particular concrete design the positive moment is drawn on the tension side of the member. This convention puts the positive moment below the beam described above. A convention of placing moment diagram on the tension side allows for frames to be dealt with more easily and clearly. Additionally placing the moment on the tension side of the member shows the general shape of the deformation and indicates on which side of a concrete member rebar should be placed, as concrete is weak in tension."
Please, see:
https://en.m.wikipedia.org/wiki/Bending_moment
https://en.m.wikipedia.org/wiki/Shear_and_moment_diagram
"In structural engineering and in particular concrete design the positive moment is drawn on the tension side of the member. This convention puts the positive moment below the beam described above. A convention of placing moment diagram on the tension side allows for frames to be dealt with more easily and clearly. Additionally placing the moment on the tension side of the member shows the general shape of the deformation and indicates on which side of a concrete member rebar should be placed, as concrete is weak in tension."