Time coefficient method according to either ATV (German Association for the Water Environment) or RAS-Ew (German Road Design Guidelines, section: drainage)
All relevant input values are integrated, e.g. Reinhold collection of rainfall data, peak run-off coefficients, reduced minimum rainfalls
Time coefficient is directly derived from the Reinhold rainfall intensity or a linear regression (Draschoff) based on a discretely defined rainfall (input of KOSTRA values)
Definition of a minimum rainfall duration and an individual frequency per reach when using the time coefficient method according to RE (German Design Guidelines)
Calculation of road drainages according to the relevant guidelines even outside built-up areas
On-screen constraining height design
Graphically-interactive Sewer Profile Designer
On-screen invert elevation and gradient design; either reach, section or sewerwise
Calculation via DTM, ground profile line of an existing parallel sewer, minimum depth of cover or any other invert elevations
On-screen definition of constraining heights
Invert elevation calculations sewerwise from bottom to top
Soffit height adjustment in 50 mm steps
Manhole cover and manhole heights can be adjusted in relation to DTMs or alignments and their associated chainage data, i.e. vertical alignments, widths and cross-falls
Clear & transferable data output
Data export in clearly structured lists, either in the internal list format or as a table in compliance with RE (German Design Guidelines), or transferable to databases and spreadsheets, e.g. MS Excel
Data export via the ISYBAU interface type K and EY
