Drainage Design
Automatic stormwater sizing
Automatic stormwater system sizing based on project location
ASHRAE rainfall data
Integration with ASHRAE rainfall and weather data
Flow and diameter calculation
Calculates flow rates, runoff coefficients, and pipe diameters
Plugin Name
Drainage Design
Discipline
Mechanical
Activities
Calculation
Tier
Premium
Overview
The Storm Water Sizing Tool automates the design and calculation of stormwater drainage systems directly within Revit. By analyzing the project’s geographical location, roof and surface areas, and rainfall intensity data sourced from ASHRAE and local weather databases, the tool determines accurate flow rates and optimal pipe diameters. It helps engineers size stormwater pipes, manholes, and catch basins in accordance with international drainage standards. The tool also accounts for surface runoff coefficients, slope, and rainfall duration, ensuring precise hydraulic performance. Results are automatically documented in a detailed calculation report and visualized within the project model. This saves time, minimizes human error, and ensures stormwater systems are designed for both performance and sustainability.