Civil Engineer: Bending Moment Calculator

Bending moment at a section is defined as the algebraic sum of moment of forces either on the left or right side of the section. Bending moment calculation is required for the design of structural elements more specifically for flexure members (beam and slab) of steel and concrete. The following bending moment calculator will be helpful in determining the bending moment at any section of simply supported beam subjected to point load and uniformly distributed load.

Instructions for using Bending moment Calculator
This Bending Moment calculator is developed to calculate the bending moment at any section of the beam carrying point load or uniformly distributed load (udl). The forces acting upward are considered as positive and sagging bending moment is taken as positive.
(i) If the beam carries more than one load you can simply re-enter the values of the load and its position and go on adding those calculated values of support reaction and Bending moment. All the distances should be entered in meter and load in kN. It will give the values of BM for section within the supports.
(ii) You can also quickly get the Bending Moment values at different sections of the beam. Just by changing the position of section "x"
(iii) This calculator will also help you in getting the ordinates of influence line diagram in case of moving load on the structures.

Loading Case	Input Values	Results
Point Load	Span of Beam (m): Load P (kN): Distance 'a' (m): Distance 'x' (m):	Reaction at A (kN): Reaction at B (kN): B.M.; Mx (kNm):
UDL on part of span	Span of Beam (m): UDL (kN/m): Distance "a" (m): Distance "b" (m): Distance "x" (m):	Reaction at A (kN): Reaction at B (kN): B.M., Mx (kNm):

This Bending Moment calculator is developed by Dr. S K Ahmad

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