FLEXIBLE PAVEMENT DESIGN IN ONTARIO

The present design methodology for flexible pavements is based on the accumulated experience of pavement performance. More definitive design procedures are needed to assess alternative designs, stage construction, and maintenance strategies. A deflection-based flexible pavement design methodology linked with economic analysis should complement the experience approach. An alternative design subsystem that considers the properties of materials is discussed, and how this subsystem and suitable criteria can be substituted in the deflection method of design in a modular fashion is indicated. A tightening money supply for highways requires more sensitive economic management tools in the pavement design area.