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Start new project
Create a project with a name and owner, then save your calculator work for later.
Scenario Manager
Build one or more pavement design cases, then compare them side by side.
Design suite link
Pick the pair that feeds the Carbon and Unpaved tabs.
Active Scenario
Rename it and set the global inputs here; layers and subgrade CBR are edited in the tables on the right.
Project Materials The materials this project offers in each layer's dropdown. Seeded from the country / standard; rename, set a default CBR, add or remove. Changes apply on Apply.
| Material name | Default CBR % |
|---|
Layer Design & Results
One editable table per scenario — surface at the top, subgrade (with its CBR) at the base. Inputs are on the left; computed EV2 updates on the right. Every scenario marked Compare gets its own table plus a side-by-side summary.
Layer Design
Drag the handle to reorder layers. Reinforced types reveal cell height / overfill / grid controls below the row. Click a scenario title to make it active.
Pavement Structure
Thickness profile with EV2 labels.
EV2 vs Depth
Step profile from subgrade to pavement surface.
Calculation Notes
Neoloy Tough-Cells MIF
Standalone MIF lookup — no full pavement design needed. Enter the infill material CBR and the support it sits on; the chart shows the 40 / 80 / 120 MPa support curves, the interpolated curve for your support, and the resulting MIF.
MIF is interpolated between the 40, 80 and 120 MPa support curves and floored at 1.0. Support is clamped into the 40–120 MPa fit domain: below 40 MPa the MIF is taken from the 40 MPa curve, above 120 MPa from the 120 MPa curve. The SIF vs support view compares the SIF cap (support modulus × SIF factor, ramping between the calibrated factors across support CBR 3–4.6) with MIF × Emax — the lower of the two governs the layer modulus.