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.
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
SUBJECT MATTER EXPERT: Jake Woland, ASLA
JAKE
WOLAND, ASLA, is a landscape architect with HEWITT in Seattle, Washington. He
previously taught at Rutgers, The State University of New Jersey.
KURT NATHAN, MS, PE, is Professor Emeritus at Rutgers, The State University of New Jersey, and was formerly a consulting engineer for Conservation Engineering.
The
late STEVEN STROM, FASLA, was Associate Professor in the Department of
Landscape Architecture at Rutgers, The State University of New Jersey.
1 hr. Online Course