SASA BEAM MECHANICS // IS 456 LIMIT STATESCOGNISTRUCT PVT. LTD.

Beam Force & Deflection Calculator

Calculate maximum bending moments (M_max), shear forces (V_max), and midspan deflection for simply supported flexural members with IS 456 L/350 deflection compliance verification.

1. Member Geometry & LoadingIS 456

Clear Span Length (L)6.0 Meters

Uniformly Distributed Load (w)12.0 kN/m

Includes self-weight + slab dead load + live load

Point Load at Midspan (P)25.0 kN

Modulus of Elasticity (E)

Moment of Inertia (I)cm⁴ (e.g. 45000 for 300x500mm)

MAXIMUM BENDING MOMENT (M_max)

91.50 kN·m

From UDL (wL²/8):54.00 kN·m

From Point Load (PL/4):37.50 kN·m

MAXIMUM SHEAR FORCE (V_max)

48.50 kN

Left Support (R_A):48.50 kN

Right Support (R_B):48.50 kN

IS 456:2000 SERVICEABILITY DEFLECTION

Midspan Deflection (δ) vs Limit (L/350)

FAIL · DEFLECTION EXCEEDED

Actual Midspan Deflection (δ)

28.00 mm

UDL: 18.00mm | Point: 10.00mm

Allowable Limit (L/350)

17.14 mm

Utilization: 163.3% of allowable

Deflection Capacity Utilization163.3%

Next: Audit Concrete Section Reinforcement

Pass calculated moment capacity into the IS 456 RC Design Analyzer.

Open Design Analyzer

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