DEFLECTION FACTOR CHARTS FOR TWO-AND THREE-LAYER ELASTIC SYSTEMS

TABLES OF DEFLECTION FACTOR VALUES FOR THREE-LAYER ELASTIC SYSTEMS LOADED WITH UNIFORM CIRCULAR LOADS HAVE BEEN PUBLISHED BY A. JONES OF THE THORNTON RESEARCH CENTER, IN CONNECTION WITH THE DEVELOPMENT OF A FUNDAMENTAL METHOD OF PAVEMENT DESIGN. FOR CONVENIENCE IN THE DESIGN AND ANALYSIS OF PAVEMENT STRUCTURES, THESE FACTORS SHOULD BE PRESENTED IN GRAPHIC FORM. THE ANALYTICAL EXPRESSION OF THE DEFLECTIONN FACTOR WAS MODIFIED, AND THE DETERMINGING PARAMETERS WERE TRANSFORMED TO PERMIT AN EASIER AND MORE DIRECT PROCESS OF DEFLECTION ANALYSIS. TWO-LAYER FACTORS WERE ALSO COMPUTED AS A PARTICULAR CASE OF THREE-LAYER SYSTEMS. THIS PAPER PRESENTS A SERIES OF DEFLECTION FACTOR CHARTS FOR TWO-AND THREE-LAYER SYSTEMS, FOR A WIDE RANGE OF PARAMETER VALUES, BASED ON JONES TABLES. SEVERAL EXAMPLES WERE COMPUTED TO SHOW THE PRACTICAL APPLICATION OF THE CHARTS. /AUTHOR/