River Loire levees hazard studies – CARDigues’ model principles and utilization examples on Blois levees

Durand, E.; Maurin, J.; Bridoux, B.; Boulay, A.; Bontemps, Arnaud

doi:10.1051/e3sconf/20160703010

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“…For central Loire levee systems, we naturally reused CARDigues tool [15] and adapted it to above presented methodology. [15] Indeed, CARDigues tool was used on 46 Loire levees hazards studies and geometry data (shown on Figure 7) are already imput for each representative profile of levee segment, every 50 ml length (generally). Presence and nature of reinforcements are also available data.…”

Section: Evaluation Tool To Evaluate Structural Levee Costmentioning

confidence: 99%

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Existing levee system economic evaluation methodology

Durand¹,

Deniaud²,

Patouillard³

2021

Science and Practice for an Uncertain Future

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In France but also in other countries, levee system network are mostly composed of old levees, modified and reinforced during the past. In France, these systems, as road network, are considered as properties and financially as assets. Then the French Centre for Studies and Expertise on Risks, Environment, Mobility, and Urban and Country Planning (CEREMA) and Centre-Val de Loire Regional Direction of Environment Planning and Housing (DREAL) conducted a reflection to build a methodology for an economic evaluation of a levee system. This reflection is inspired by methodology based on asset replacement cost with a potentially depreciation reserve and methodology based on total economic value that takes into account benefits or provided services rendered by this asset. Therefore, the global economic value of a levee system is an average of structural cost balanced out with depreciation or bonus factors. The article details how structural cost is obtained with a levee system segmentation in homogeneous levee sections and unit prices and how depreciation or bonus are evaluated. Finally, this article discuss this methodology and its applicability on Loire levee systems with an example on Orléans levee system.

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Section: Evaluation Tool To Evaluate Structural Levee Costmentioning

confidence: 99%

“…Figure 2. Description of the levee system separation in representative levee segments and profiles(Durand E., 2016) …”

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confidence: 99%