Retaining Wall Design Calculator

Design gravity and cantilever retaining walls with Rankine/Coulomb earth pressure analysis, overturning/sliding/bearing stability checks, and structural reinforcement design.

Eurocode 7 · ACI 318 · AS 4678

Geometry

Retained Height H (m)

Stem Top (m)

Stem Base (m)

Base Width (m)

Base Thickness (m)

Toe Projection (m)

Heel Projection (m)

Shear Key

Key Depth (m)

Key Width (m)

Soil & Loading

Backfill Soil

gamma = 18 kN/m3phi = 33 degc = 0 kPadelta = 22 deg

Foundation Soil

Bearing (kPa)

Friction (tan d)

Earth Pressure Theory

RankineCoulomb

Surcharge q (kPa)

Fully Drained

Materials

f'c (MPa)

fy (MPa)

Cover (mm)

Wall Cross-Section

Stability Checks

Overturning

Target: 2.0

2.10

Sliding

Target: 1.5

1.19

Bearing

Target: 3.0

1.67

Eccentricity

0.402 m

Middle Third

Fail

q_max

120.1 kPa

q_min

0.0 kPa

Resultant

0.798 m

Structural Design

StemShear OK

Moment80.2 kNm/m

Shear54.2 kN/m

As req602 mm2/m

BarsD10 @ 130 mm

ToeShear OK

Moment31.1 kNm/m

Shear72.4 kN/m

As req616 mm2/m

BarsD10 @ 127 mm

HeelShear OK

Moment46.8 kNm/m

Shear62.7 kN/m

As req616 mm2/m

BarsD10 @ 127 mm

Distribution Steel

544 mm2/m

Concrete

2.270 m3/m

Rebar

74.6 kg/m

Some Checks Fail