Guidelines for the Design of Subsurface Drainage Systems for Highway Structural Sections.

摘要

Design criteria and a design method for pavement subsurface drainage systems include inflow-outflow method of analysis,open graded drainage layers,collector drains,pipe outlets and markers. Design examples are given for embankment sections,cut sections and superelevated curves. Emphasis is on draining water that infiltrates the pavement structure from the surface through cracks,construction joints,and through permeable surfaces,medians and shoulders. A final section of the report covers general guidance for the design,construction and operation of subsurface drainage systems. (Author)