Cantilever Beam Calculator

Calculate moment, shear, deflection, and reinforcement requirements for cantilever concrete beams.

Cantilever Parameters

Cantilever Length (ft)

Load Type

Uniform Load (kips/ft)

Beam Width (in)

Beam Depth (in)

f'c (psi)

fy (psi)

Maximum Moment at Support

89.60 k-ft

Service: 64.00 k-ft | Shear: 22.40 kips

Flexure

Shear

Stirrups

Deflection

Support Reactions

Vertical Reaction

16.00 kips

Moment Reaction

64.00 k-ft

Top Reinforcement (at support)

1.374 in²

rho = 0.739%

5-#5

4-#6

3-#7

phiMn Capacity

89.60 k-ft

phiVc Capacity

17.65 kips

Deflection at Free End

Delta = 1.010" (Limit: 533.333" = L/180)

Load Case	Max Moment	Max Shear	Max Deflection
Uniform Load (w)	wL²/2	wL	wL⁴/8EI
Point Load at End (P)	PL	P	PL³/3EI
Point Load at (a) from support	Pa	P	Pa²(3L-a)/6EI