Overview

About the Calculator

The ClearCalcs One-Way Concrete Flat Slab Calculator to ACI 318-19 allows the fast and accurate analysis and design of concrete slabs to the latest US standards. With live solving FEA and dynamic hoverable graphs for moment, shear, and deflection, ClearCalcs makes it easy to design and optimize concrete slabs.

One-way concrete slab design to ACI 318-19

Quickly design and analyze one-way concrete flat slabs to meet the requirements of the latest US standards, including the American Concrete Institute (ACI) 318-19.

Fast and accurate one-way slab design with easy-to-use input

ClearCalcs simplifies the process of designing one-way concrete slabs. With minimal input needed for slab thickness, span, and concrete strength and cover, you can obtain accurate results in seconds.

Integrated check for minimum allowable cover for slab design

Automatic check for minimum allowable cover based on the reinforcement size of your slab design.

Traffic light checks for one-way concrete slab design

Instantly calculate your slab's usable strength (positive moment capacity), shear, and deflection with color-coded utilization

Access checks and references for one-way slab design calculation in a click of a button

Easily find the appropriate standards reference, clause, and description (reasoning) used for your one-way slab design calculation if you are unsure or want more information. Never be in the dark again!

Why ClearCalcs?

Frustration to Flow

See how ClearCalcs transforms structural calculations from a tedious, error-prone chore into an efficient, stress-free process.

With spreadsheets and clunky software

Frustration, fuss, and fragile formulas—the old way of engineering calculations that holds you back

Struggle with endless spreadsheets and custom formulas.

Building codes change, but outdated software and spreadsheets don’t.

Triple-check and verify manual input at every turn.

Old software feels like a maze, with unclear settings, limited templates, and rigid interfaces.

With ClearCalcs

Effortless, efficient engineering calculations at your fingertips.

100+ pre-built calculators for different materials.

Every calculation comply with the latest codes and standards.

Forget the worry of “black box” calculations; verify calculators with inline formulas, codes, and checks.

Intuitive tools built to your workflow, plus unmatched customer support.

How It Works

Your code-compliant calculator

Tired of complex calculations? ClearCalcs Calculator Library keeps it simple, secure and code-compliant – so you can calculate with confidence.

Save time with ready-to-use templates for wood, steel, and concrete

ClearCalcs offers an extensive library of easy-to-use calculators for beams, columns, and footings, designed to make structural calculations simpler and faster.

Choose from a wide range of pre-configured beam and column options, complete with automatic member sizing, so you can quickly reach reliable designs and reduce rework.

Beams

Columns

Foundations

Walls

Loads

Dynamically track your load paths from roof to foundation

No need to copy and paste reactions between calculations! If the top calculator's reactions change, the loads being inherited onto the lower calculator will update automatically. This includes all loads such as dead, live, snow, seismic, and wind.

Submit professional reports for permit review

ClearCalcs is not only easy to use, but also easy to check! All calculations follow an easy to understand traffic light check system, with multiple levels of detail available giving you the choice of printing every step of the calculation and all code and standard references, or simply a compact, one-page print out.

Report heading includes your project name and address

Easily upload your organization logo for a professional report

Use custom PDF upload to merge additional documents to your structural calculations

Download a sample report

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Concrete Slab Calculator to ACI 318-19