Atlan Stormwater

GPT Sizing Tool

Calculate the required treatment flow and select the optimal Gross Pollutant Trap configuration for your project specifications.

Site Parameters

Hydraulic Demand Analysis

GPT sizing overview

Required treatment flow is calculated from the rational method for catchment mode, then matched against supplied GPT model capacities.

Required Flow

-- L/s

Council Status

Auckland

Input Mode

Catchment Sizing

Q (L/s) = Area (m²) × C × rainfall (mm/hr) / 3600