Variable thickness mat for use at the stress transition zone juncture of a bridge-roadway or the juncture of a railroad crossing- roadway

摘要

A variable thickness fabric mat for use at a stress transition zone juncture such as at a bridge-roadway juncture or a railroad crossing- roadway juncture, for more evenly spreading the stress forces from traffic thereover to the underlying support surfaces. The variable thickness mat is preferably formed of non-woven fabric and is of variable thickness in a direction lengthwise of the mat as well as in a direction transverse of the mat.