Application Type of load Pavement type Subgrade depth

Airport Dynamic/extra heavy Flexible 2.0m Rigid 1.5m

Mine haul access Dynamic/very heavy Flexible 1.5m Rail Dynamic/very heavy Flexible/rigid 1.25m Major roads Dynamic/heavy Flexible 1.0m

Rigid 0.75m Industrial building Dynamic/static/heavy Rigid 0.75m Minor roads Dynamic/medium Flexible 0.75m

Rigid 0.5m Commercial and Static/medium Rigid 0.5m residential buildings

Walkways/bike paths Static/light Rigid/flexible 0.25m

◦ Contact pressures for flexible foundations on sands and clays approximately similar.