Beam Shear & Moment Diagram Simulator

Configure a simply supported or cantilever beam with any combination of uniform distributed load and up to 3 point loads. Instantly see shear and moment diagrams, reactions, and max deflection.

⚙️ Beam Configuration

SUPPORT TYPE

SPAN (ft)20 ft

UNIFORM DISTRIBUTED LOAD (kip/ft)1.5 k/ft

SECTION PROPERTIES

E (ksi)

I (in⁴): 400

🎯 Point Loads (max 3)

Point Load 1

Position: 10.0 ft

Load: 5 kips

RESULTS

RA (Left)

17.50 k

RB (Right)

17.50 k

Max Shear

17.50 k

Max Moment

100.00 k-ft

Max Deflection

0.001"

L/Δ Ratio

L/193333

L/Δ = L/193333 ✓ Well within deflection limits

BEAM DIAGRAM

0 ft

20 ft

▬ w = 1.5 k/ft UDL↓ P1 = 5 kips @ 10 ft

Sign convention: positive shear = left face up, right face down. Positive moment = sagging (tension on bottom fiber). Deflection uses linear elastic beam theory (EI constant). L/360 limit for live load deflection; L/240 for total load deflection per IBC 1604.3.