Virginia Case Studies of Risk Based Drainage Design

by G. Kenneth Young, GKY & Associates Inc, United States,

Document Type: Proceeding Paper

Part of: Critical Water Issues and Computer Applications


The goal of this paper is to apply a practical engineering risk-based method of design of pavement and surface drainage systems to three Virginia case studies. The target systems include curbs, gutters, inlets, and storm sewers. Risks are defined as the expected or average annual losses associated with random, rain-related failures of the drainage systems. The sum of construction costs and costs associated with risks is the total cost of a facility. The mathematical objective is to find the design that has the Lowest Total Economic Cost (LTEC) design. LTEC design synthesizes hydrology, hydraulics, statistics, and traffic economics.

Subject Headings: Case studies | Hydraulic design | Risk management | Drainage | Pavement design | Drainage systems | Hydraulic structures | Surface drainage | Virginia | United States

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