Siphonic Innovations logo Megh™SIPHONIC DRAINAGE CALCULATOR

Siphonic design. In your browser.

Mac or Windows. Nothing to install.

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Megh™ · Siphonic Drainage CalculatorEnglish
Roof area8 400 m²
Rainfall333 l/(s·ha)
Design flow280 l/s
OutletsHD/110 × 7
PipeHDPE
ViewIsometric
Primary systemOK Secondary systemOK Gutter checkOK
09:16
21-10-2026

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A little of Megh, right here

Three features, simplified from the real software.

mm
mm
Folds

Folded

The full software

Inside Megh

Set to the standard your project follows

UKBS 8490:2025United Kingdom
DEVDI 3806Germany
USASPE/ANSI 45-2025United States
SGSS 525:2024Singapore

Sized and balanced

Every pipe in the network, branch by branch.

Siphonic gutters

Gutters designed for siphonic outlets, not gravity rules.

Gravity, side by side

Gravity calculator with a direct comparison to siphonic.

Isometric, CAD, BIM

One-click export to CAD and BIM, with your own roof outlet model.

BOQ and BOM

Currency, discount and pipe stock. BOQ: bill of quantities; BOM: bill of materials.

Printed reports

Metric or US units, in 7 languages.

For manufacturers and distributors

Your own version of Megh

Each company gets Megh built around its own products. Your engineers and agents design with your parts, and every report carries your name.

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Free demo

Request a demo login

The demo has every feature working. Reports and drawings are marked DEMO. We set up your login by hand, usually within one working day.