State-of-the-Art Report: Mexicoby José Antonio Maza Alvarez, UNAM, Mexico,
Abstract: Design recommendations for groins and spur dikes are presented. For groins the most important ones are: to build them with sloping crests, orientated downstream and maximum spacing of 6 Lt for straight reaches and 4 Lt for curves. The last recommendation is valid only for regular banks parallel to the river axis. The equations needed to find the plan-view shape and the dimensions of spur dikes are also shown. Spur dikes built following these recommendations prevent the scouring of the abutments and guarantee that the streams lines have the directions for different discharges and parallel to the axis of the piers.
Subject Headings: Levees and dikes | Developing countries | Groins (structure) | Channel flow | High-rise buildings | Curvature | Spacing | Rivers and streams | Slopes | North America | Mexico
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