Site Engineering for Landscape Architects: Determining Rates and Volumes of Storm Runoff (RV-10716)
To design and size storm water management devices, such as grassed swales, drainage pipes, and detention storage ponds, it is first necessary to estimate the rates and volumes of runoff that must be handled. The science of hydrology, which deals with precipitation and runoff, includes a number of models that help predict the runoff to be used as input to the design procedures. This course discusses the Rational method and Modified Rational method for designing and sizing of management systems, and provides examples of how these methods may be applied.
Water / Stormwater Management
Health, Safety and Welfare
By the end of this course, you will be able to:
Describe the Rational method for determining storm water surface runoff rates
Explain the concept of time of concentration for a drainage area
Explain the Modified Rational method of developing simplified hydrographs
Identify the three types of simplified hydrographs developed by the MRM
Describe how to compute volumes of runoff and required storm water storage
Jake Woland, ASLA
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