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Simply Supported Beam
Civil
Structural Analysis
Simulation
Learn
Assessment
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Simply supported beam
span L = 6 m · point load
A
B
R_A
13.3 kN
R_B
6.7 kN
a = 2.00 m
b = 4.00 m
W = 20 kN
⟷ drag
δmax = 4.5 mm at x = 2.73 m · shape exaggerated
SHEAR FORCE V (KN)
+13.3
−6.7
V changes sign → M peaks
BENDING MOMENT M (KN·M) · SAGGING +
26.7
0 m
1 m
2 m
3 m
4 m
5 m
6 m
Hover or touch the diagrams to cut a section anywhere
Controls
Point load W
20
kN
Load position a (from A)
2
m
Results
Reaction A
13.3
kN
Reaction B
6.7
kN
Max deflection
4.5
mm
Max moment
26.7
kN·m
ΣM_A = 0 → R_B = W·a / L = 6.7 kN
M_max = W·a·b / L = 26.7 kN·m
ISMB 300 steel · EI = 17.2 MN·m² · limit L/360 = 16.7 mm
Drag the red load along the beam, and hover or touch the diagrams to read V and M at any section.