RAINPLANER® – Scope of Functions

Whether infiltration or retention, whether surface, swale, trench or basin – RAINPLANER®-Online covers all practically relevant calculation types in a standard-compliant manner. Ideal for engineers, landscape planners, civil engineering and architects.

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Infiltration Systems

All infiltration types according to DWA-A 138-1 (10/2024), DWA-A 138 (04/2005) and ATV-A 138 – iteratively with KOSTRA-DWD-2020 rainfall intensities.

Surface Infiltration

Dimensioning of the required infiltration area or verification of an existing area. For high open-space availability and good infiltration capacity of the subsoil. Joint share can be considered.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ ATV-A 138 (Reinhold rainfall intensity)
  • ✅ Joint share configurable
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Swale Infiltration

Dimensioning of the required swale volume or alternatively the swale depth. Iterative design procedure for all duration levels and return periods.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ ATV-A 138 (Reinhold rainfall intensity)
  • ✅ Optional volume or depth determination
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Trench Infiltration

Dimensioning of trench length or height incl. pipe trench infiltration. Consideration of additional trench elements to increase volume.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ ATV-A 138 (Reinhold rainfall intensity)
  • ✅ Height instead of length determination possible
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Modular Trench System

Calculation for INTEWA DRAINMAX Tunnel/Honeycomb, AUER Rigoletto RG88, WAVIN QBic Plus/Aquacell as well as freely configurable third-party geometries.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ Number of system components calculated automatically
  • ✅ CAD system diagrams included
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Shaft Infiltration

Dimensioning of infiltration shafts Type A (base and side areas) and Type B (base area). Calculation for multiple shafts with shallow groundwater depths.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ ATV-A 138 (Reinhold rainfall intensity)
  • ✅ Multi-shaft distribution possible
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Infiltration Basin

Dimensioning of the required basin volume using the simplified method. Rectangular basin with configurable slope gradient and ponding depth.

  • ✅ DWA-A 138-1 (10/2024) / DWA-A 138 (04/2005)
  • ✅ Iterative simplified method
  • ✅ Individual basin geometry
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Retention & Verification

Stormwater retention storage, flood verifications and stormwater management according to DWA and DIN.

Stormwater Retention Storage

Dimensioning of the storage volume VR and ponding depth with throttled discharge. Three alternative calculation methods available.

  • ✅ DWA-A 117 (02/2014)
  • ✅ DIN 1986-100 (12/2016), Eq. 22
  • ✅ Simplified inflow-outflow balance
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Flood Verification

Calculation of ponding volume and ponding depth according to DIN or DWA. Consideration of discharge restrictions and foundation drains.

  • ✅ DIN 1986-100 (12/2016), Eq. 20, 21, 22
  • ✅ DWA-A 138-1 (10/2024), Eq. 10
  • ✅ DWA-AG ES-3.1
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Treatment Requirement DWA-M 153

Assessment points for air pollution, connected areas and water body type. Treatment measures and manufacturer systems stored.

  • ✅ DWA-M 153 – assessment points complete
  • ✅ Treatment measures A.4a / A.4b
  • ✅ Manufacturer-specific passage values
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Stormwater Management DWA-A 102

Area categorisation of connected areas, identification of required treatment and efficiency ratings when pollutant loads are exceeded.

  • ✅ DWA-A 102 – area categories stored
  • ✅ DWA-A 138-1 supplementary
  • ✅ Treatment systems from various manufacturers
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Pipe & Channel Flow

Calculation of flow from pipes and channels using two recognised hydraulic calculation methods.

  • ✅ Prandtl-Colebrook
  • ✅ Manning-Strickler

Partner Calculators & Manufacturer Integrations

RAINPLANER® integrates product and planning tools from leading manufacturers directly into your calculation workflow.

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Greywater Recycling

Aqualoop

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Effluent from small sewage treatment plants

Sewage

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INTEWA DRAINMAX

Tunnel trench systems

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Aqualoop

Aqualoop

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INTEWA RAINMASTER

Domestic water systems

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Roof Runoff

Rainwater harvesting

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INTEWA PURAIN

Rainwater filter

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Drinking water production

Water treatment

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AUER Rigoletto

at AUER RAIN SOLUTIONS

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WAVIN Stormwater Calculator

incl. WAVIN QBic Plus

General Performance Features

RAINPLANER®-Online offers uniform quality characteristics across all calculation types.

KOSTRA-DWD-2020

Location-specific rainfall intensities directly from the KOSTRA-DWD-2020 dataset – selection by map, geocoordinates or place name. Individual rainfall data can be imported.

PDF Reports

Audit-ready reports at the push of a button – ready for submission to authorities and approval bodies. Incl. system diagrams for modular trench systems.

Cloud & Access

Permanent password-protected account. Data and projects secured by encryption and protected against data loss by backups.

Project Management

Manage multiple projects simultaneously, compare variants and archive results. Team access available.

100% browser-based

No download, no installation. Runs on desktop, tablet and smartphone – with Chrome, Firefox, Safari and Edge.

Combinable Calculations

Treatment assessments (DWA-M 153, DWA-A 102) can be performed separately or directly together with infiltration and retention calculations.

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