AASHTO HDG-4-M
AASHTO HDG-4-M
Highway Drainage Guidelines, 4th Edition
standard by American Association of State and Highway Transportation Officials, 01/01/2007
standard by American Association of State and Highway Transportation Officials, 01/01/2007
The updated Fourth Edition of Highway Drainage Guidelines is in dual units and, therefore, supersedes all previous versions, both metric and U.S. Customary units, of this title.