CIRCLY is the leading pavement design software for roads and highways. CIRCLY implements a rigorous flexible mechanistic pavement design methodology that incorporates state-of-the-art pavement material properties and performance models. CIRCLY is an integral component of the AUSTROADS Australian Pavement Design Guide.

CIRCLY VERSION 4.0
IS NOW AVAILABLE!

CIRCLY 4.0 has been enthusiastically received by our users. 

CIRCLY 4 has the best of of V2 and V3 plus more.  Much more useful than V3.  We congratulate you.

Bruce Chappell
Beca Carter Hollings and Ferner,
New Zealand

CIRCLY 4 is a dream to use!

Colin Leek
City of Canning
West Australia

  • If you currently use CIRCLY Version 3.0, check out the New Features.

  • If you are new to CIRCLY why not try the Guided Tour?

Layered Elastic Pavement Design- Recent Developments We have recently published a paper that gives an overview of mechanistic pavement design and recent developments in CIRCLY 4.   For further details see Wardle and Rodway (1998).

Austroads Guide changes CIRCLY users should be aware of a number of important changes to the manual which were issued to registered holders in November 1997. These changes relate to fatigue relationships for cemented materials and to recommended tyre pressures.

Heavy Duty Pavements Performance data developed for highway pavements (e.g. Austroads) is not generally appropriate for heavy loadings such as airports and container terminals.   Use of such models can lead to grossly under-designed pavements.  For further details see Rodway and Wardle (1998).


CIRCLY is now Year 2000 compliant

Overview

CIRCLY is a powerful, user-friendly, Windows-based package that analyses a comprehensive range of load types acting on layered elastic systems. CIRCLY saves time on data analyses, reduces costs and improves the accuracy of results, bringing new efficiencies to the complex task of pavement design.

CIRCLY implements a rigorous flexible pavement design methodology that incorporates state-of-the-art pavement material properties and performance models.

CIRCLY calculates the cumulative damage induced by the whole traffic spectrum comprising any combination of vehicle types and load configurations.

Also Available: A Design package for Heavy duty or Aircraft pavements

A special design system, APSDS (Airport Pavement Structural Design System) is used for heavy duty pavements. It is based on the CIRCLY system and has been modified to suit the design of airport pavements and other heavy duty industrial pavements such as container terminals.   We have recently published a paper that describes why performance data developed for highway pavements is not appropriate for heavy loadings such as airports and container terminals and can lead to grossly under-designed pavements.   For further details see Rodway and Wardle (1998).