On the calculation of the capacity of intermediate storage tanks
in storm sewer networks (further to the discussion)

Summary

Within the framework of the announced discussion («Calculation method for determining the capacity of intermediate storage tanks in storm sewer networks», article by G. Gudkov, published in No. 6 of the journal for 2020), the results of one particular case of developing a method of approximate calculation of the capacity of an intermediate storage tank in a storm sewer were critically «analyz» and «accuracy» criteria. It is noted that in some cases, with a high degree of uncertainty of the initial data, these criteria may contradict each other. It is concluded that the approximation of rain hydrographs by more simple functions of time, convenient for subsequent analysis, is acceptable without any significant loss of accuracy. On this basis, an expression was obtained for calculating the capacity of an intermediate storage tank in storm sewer networks. The compact formula is more convenient for engineering calculations than the one presented in the above-mentioned article.

Key words

surface runoff , mathematical model , calculation error , intermediate storage tank , rain hydrograph , approximation