748.5 Matching Existing Structures: Difference between revisions

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[[image:748.5 Photo Matching Existing.jpg|right|500 px]]
[[image:748.5 Photo Matching Existing.jpg|right|500 px]]


When an existing structure that is to be replaced has provided adequate performance, a [[131.1 Design Exception Process|design exception]] to match the hydraulic performance of the existing structure is necessary and encouaged.  Thorough documentation of the adequate historical performance is included with the Design Exception.
When an existing structure that is to be replaced has provided adequate performance, a [[131.1 Design Exception Process|design exception]] to match the hydraulic performance of the existing structure is necessary and encouraged.  Thorough documentation of the adequate historical performance is included with the Design Exception.


[[Category:748 Hydraulics and Drainage|748.05]]
[[Category:748 Hydraulics and Drainage|748.05]]

Revision as of 14:32, 21 December 2011

When an existing structure that is to be replaced has provided adequate performance, a design exception to match the hydraulic performance of the existing structure is necessary and encouraged. Thorough documentation of the adequate historical performance is included with the Design Exception.