Retaining Wall Calculator

About this app

Sizing a retaining wall and need to know whether it slides or overturns? Pick a soil type and a wall type, enter the wall dimensions, and read the lateral pressure and both safety factors off one screen. Everything updates as you type. WHAT YOU ENTER: - Wall height, thickness, and length - Soil type: Sandy, Clay, Silty Clay, or Gravel - Wall type: Gravity Concrete, Cantilever, or Segmental Block - Surcharge load from anything sitting on the backfill - Depth to the water table WHAT IT CALCULATES: Soil Properties (from the soil type you pick): - Unit weight and friction angle, shown so you can see what is driving the number - Ka, the Rankine active earth pressure coefficient Lateral Earth Pressure: - Ka - Active pressure at the base of the wall - Total active force, per foot of wall - Surcharge force, per foot - Total lateral force, per foot Stability Analysis: - Overturning moment, per foot - Factor of safety against sliding, flagged green at 1.5 or better - Factor of safety against overturning, flagged green at 2.0 or better Foundation Recommendations: - A starting footing width and depth for the wall type you chose READ THIS BEFORE YOU RELY ON IT: This is a fast preliminary check, not a design and not a substitute for your EOR's stamp. - Unit weight and friction angle come from the soil type you pick. They are typical book values shown on screen — you cannot type in a measured gamma or phi from a soils report. - Footing width and depth are a rule-of-thumb starting ratio for the wall type, not a solved minimum. The app does not iterate a footing to hit a target safety factor. - Rankine active pressure only. No passive resistance credit, no bearing-capacity check, no global stability, no seismic. - Imperial units only (ft, pcf, psf, lbs/ft). KEY FEATURES: - One screen, live results, no calculate button - Colour-flagged safety factors so a failing wall is obvious at a glance - The calculator works completely offline. No account, no login, nothing you type leaves your device - $4.99 once. No subscription, no in-app purchases The app also includes a More Pro Tools card linking to our other apps on the App Store. Nothing in the calculator needs it, and nothing needs a connection. Built for civil engineers, geotechnical engineers, and concrete contractors who want the first-pass number in seconds and know when to check it.

More Pro Tools now leads with FE Civil Exam Prep — NCEES-style practice questions and a full-length timed mock exam for the FE Civil exam. Everything in this app works exactly as before.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Oct 2, 2026 · 7:51 PM $4.99