TUFLOW 2D Hydraulic Structures: Difference between revisions
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<li>Calculate the ratio of the water area occupied by piers to the gross water area of the constriction (both based on the normal water surface) and the angularity of the piers. These inputs are used to calculate "J" in the FHA documentation.</li>
<li>Use the FHA (1978) ''Incremental Backwater Coefficient for Piers'' data to calculate Kp. This is the value which will be entered into TUFLOW as the form loss
[[File:FHA_Kp_arrow.PNG|400px]]
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