Abstract
Since their inception and introduction in the early 1980s, geocomposites have received wide acceptance as edge drains, particularly on interstate highway rehabilitation projects. During that time the industry has learned a great deal about the design requirements of the system to ensure acceptable performance. Through a review of laboratory tests, site investigations, and literature, a guide to systems design with emphasis on controlling factors is offered. Structural, hydraulic, and installation criteria are included. This paper appears in transportation research record no. 1329, Geocomposite pavement drain systems 1991