Highway subdrainage design

009641022134166281990PDFTech ReportFHWA-TS-80-224;NTIS-PB2008100997;GPO-1990-717-000:27148SubdrainsSubsurface drainageGroundwaterDrainage - United States - Design and constructionRoad drainage - United States - Design and constructionUnited StatesUnited States. Federal Highway AdministrationMoulton, Lyle K.Triad Engineering Consultants, Inc.United States. Federal Highway Administration. Office of Research and DevelopmentNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceNTL-HIGHWAY/ROAD TRANSPORTATION-Soils and GeologyFederal Highway AdministrationThis report contains five chapters relating to highway subdrainage design. Chapter 1 is devoted to a general discussion of the adverse effects of subsurface water, the types and sources of subsurface water and its movements, and the types of subsurface drainage installations that can be used either singly or in combination, to control this water. Chapter 2 lists the data requirements for analysis and design and presents recommended procedures for assembling these data. Chapter 3 presents methods and recommended criteria for the control of groundwater and infiltration in pavement structural sections. Chapter 4 deals with the more general control of groundwater away from the pavement. Chapter 5 presents a discussion of the construction and maintenance aspects of subdrainage systems