A launching apron is to be designed at downstream of a weir for discharge intensity of 6.5 m³/s/ For the design of launching aprons the scour depth is taken two times of Lacey scour depth. The factor of the bed material is unity. If the tail water depth is 4.4m, the length of launching apron in aunched position is_ m.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A launching apron is to be designed at downstream of a weir for discharge intensity of 6.5 m³/s/m.
For the design of launching aprons the scour depth is taken two times of Lacey scour depth. The silt
factor of the bed material is unity. If the tail water depth is 4.4m, the length of launching apron in the
launched position is m.
Transcribed Image Text:A launching apron is to be designed at downstream of a weir for discharge intensity of 6.5 m³/s/m. For the design of launching aprons the scour depth is taken two times of Lacey scour depth. The silt factor of the bed material is unity. If the tail water depth is 4.4m, the length of launching apron in the launched position is m.
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