Risk-Safety Factor Relation for Storm Sewer Design

by Ben Chie Yen,
Wilson H. Tang,

Serial Information: Journal of the Environmental Engineering Division, 1976, Vol. 102, Issue 2, Pg. 509-516

Document Type: Journal Paper


Recently, the writers proposed a new method for optimal design of diameters and slopes of pipes of storm sewer networks. Uncertainties from various sources are considered and a tradeoff is made between potential rainstorm flood damages and the coast of installation of the sewers. One key step in the proposed method is the establishment of the risk-safety factor relationship. Through a numerical example, this paper presents the details of procedure to establish the risk-safety factor relationship. The usefulness of the relationship so established is neither restricted to the optimal design method proposed.

Subject Headings: Risk management | Storm sewers | Slopes | Pipe sizes | Pipe networks | Sewer pipes | Uncertainty principles | Rainfall

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