Determination of design layer of rainfall for design of treatment facilities of surface runoff

摘要

The article assesses the influence of the initial data and the duration of observations on the calculated value of the sediment layer,which determines the performance of treatment facilities of surface runoff.At design of these constructions drain volume from a settlement rain is found.The error introduced by the grouping of initial data depending on the accepted gradation of intervals is determined.The daily layer of precipitation from low-intensity frequent rains with a period of a single excess of the calculated intensity of 0.05-0.1 years was determined(for the conditions of Samara).Recommendations on the choice of initial data in the design are given.