Water hydraulics

With BaSYS AquaFIN, water supply networks are calculated directly from the BaSYS database. BaSYS AquaFIN uses STANET, a very fast and exact solution procedure for the stationary and dynamic calculation of water supply networks.

BaSYS AquaFIN administers all water supply network data that are relevant for hydraulics. The calculation results are output in the BaSYS AquaFIN forms, standard reports and in BaSYS Plan theme plans.

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Data collection has to comply with the network logic according to the GAWANIS standard. This requirement is met automatically with the use of BaSYS-Plan. Alternatively the data can imported into the BaSYS database using standardised interfaces or entered manually into the BaSYS AquaDATA/AquaFIN forms.

BaSYS AquaFIN (and the BaSYS database) communicates directly with the STANET calculation core via an interface. At the start of the calculation, the elements of the water supply network, data and parameters are automatically transformed to the STANET logic. This means a hydraulic standby system is not required. Optionally the network can be revised and recalculated in STANET before reading the results back into BaSYS AquaFIN.

The hydraulically relevant pipe characteristics, pump curves and hydraulic default settings are administered in the BaSYS AquaFIN libraries. Complete libraries can be made available for other water supply projects using System Manager:

  • The pipe library contains the technical and hydraulic pipe parameters.
  • When a pipe library entry is assigned to a water line, all relevant values are transferred. This makes hydraulic planning considerably easier.
  • The pipe library can be subsequently generated from existing network data using the geometry tool. This also automatically links the relevant pipes to the respective data record in the pipe library. The water supply network can also be liked to an existing pipe library in this way.
  • The pump curves are defined in the corresponding library and shown graphically.

The node and pipe forms are divided into tabs:

  • Verification and input of the technical data.
  • Verification and input of the hydraulic base data.
  • Verification and input of the hydraulic data for the calculation default settings.

BaSYS AquaFIN communicates directly with the supplementary forms of BaSYS AquaDATA and object representation in BaSYS Plan.


The list view of the node and pipe forms offers numerous possibilities:

  • Filtering/grouping by the calculation default settings.
  • Use of visual and integrated plausibility checks.
  • Export of the data to any Office document.


The node form is used to administer the data relevant for hydraulics:

  • Control centre boundary conditions
  • Elevations, pressures, feeds, discharges, flows
  • Relevant flow direction of “one-way” fittings such as control units and pumps
  • Status “opened”/“closed”

The calculation default settings are stored in the database. These include:

  • The sub-network to be calculated
  • All parameters for calibrating the calculation in STANET
  • Hydraulic boundary conditions
  • Load factors

The tract discharge – also parallel to the node discharge – can be calculated using the meter mass value, load factor and line-specific development factor.


The calculation is started in the BaSYS AquaFIN menu bar and encompasses:

  • Data export to STANET with plausibility check of the network topology and parameters
  • Display of the calculation protocol in BaSYS AquaFIN
  • Optional recalculation before the import back into AquaFIN


The calculation results can be checked in the following locations:

  • BaSYS AquaFIN node and pipe forms (export to Office)
  • Queries/reports of the BARTHAUER Configuration Explorer
  • Theme plans in BaSYS Plan
  • Longitudinal section BaSYS LILA


The calculation results for selected pipe tracts are output in the longitudinal section:

  • Visualisation of pressure curves, energy curves, flows
  • Joint representation with the sewer hydraulics results