Slab Design Calculator

Professional two-way slab design with AI recommendations

ACI 318 CompliantDPT 1008 CompliantAI RecommendationsCO₂ Analysis

Note: This tool calculates per ACI/DPT standards but does not replace review by the design engineer.

Solo mode — click Share to invite collaborators

Unit System

Building Type(Auto-suggests live load)

Span X (m)

Span Y (m)

Span ratio: 1.33 → Two-way action ✓

Thickness (mm)(Leave blank for auto-calculation)

Use service (unfactored) values in kN/m²; values above 10 are unusual — double-check units

Live Load (kN/m²)

Dead Load (kN/m²)

Permanent loads (walls, services) excluding slab self-weight

Superimposed Dead Load (kN/m²)

Finishes, partitions, MEP (typical: 1.0–2.0 kN/m²)

Support Type

Edge X

Edge Y

Concrete Grade

Steel Grade

Building Code

Ready to Calculate

Fill in the form and click "Calculate Design"