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. | 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. | ||
[[Category:748 Hydraulics and Drainage|748.05]] | [[Category:748 Hydraulics and Drainage|748.05]] | ||
Revision as of 08:59, 13 May 2010
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 encouaged. Thorough documentation of the adequate historical performance is included with the Design Exception.