For a continuous beam with 3, 4 or 5 supports and distributed load the reaction support forces can be calculated as
R = reaction support force (N, lbf)
cr = reaction support force coefficient from the figure above
q = distributed load (N/m, lbf/ft)
L = span length (m, ft)
The moments can be calculated as
cm = moment coefficient from the figure above
The reaction forces in the end supports for a continuous beam with 3 supports and distributed load 1000 N/m can be calculated as
The reaction force in the center support can be calculated as
The beam moments at the middle of spans with span length 1m can be calculated as
The beam moment at the center support can be calculated as
For a continuous beam with 3, 4 or 5 supports and point loads the reaction support forces can be calculated as
cr = reaction support force coefficient from the figure above
The moments can be calculated as
cm = moment coefficient from the figure above
The reaction forces in the end supports for a continuous beam with 3 supports and 2 point loads 1000 N can be calculated as
The reaction force in the center support can be calculated as
The beam moments at point loads with span length 1m can be calculated as
The beam moment at the center support can be calculated as
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