How accurate is this calculator?

This calculator uses data and methodologies from authoritative sources like ASCE 7-22.

Can I use this calculator for all types of green roofs?

This tool is designed for a variety of green roofs but check with a structural engineer for specific cases.

Green Roof Load Calculator

Use this calculator to determine the load impact of green roofs on your building structure. Ideal for civil engineers and architects, this tool provides insights into the additional weight imposed by vegetation layers, soil media, and water retention.

Interactive Calculator

Roof Area (m²) *

Soil Depth (cm) *

Vegetation Type *

Water Retention (%) *

Results

Total Load: 0 kg/m²

Data Source and Methodology

All calculations are based on the guidelines from ASCE 7-22, providing reliable data for structural engineering.

The Formula Explained

Load = (Soil Depth × Soil Density) + Vegetation Load + (Water Retention × Water Density)

Glossary of Terms

Roof Area: The total area of the roof in square meters.
Soil Depth: The depth of the soil layer in centimeters.
Vegetation Type: The type of vegetation used in the green roof, affecting load.
Water Retention: The percentage of water retained by the soil.

How It Works: A Step-by-Step Example

For a roof area of 100 m² with a soil depth of 15 cm and medium vegetation, the load is calculated using the provided formula.

Frequently Asked Questions (FAQ)

What are the benefits of a green roof?

Green roofs provide insulation, reduce urban heat, manage stormwater, and improve biodiversity.

How do I know which vegetation type to choose?

Consider your climate, maintenance capacity, and structural load capacity when choosing vegetation.

Tool developed by Ugo Candido. Content reviewed by the Construction Calculator Hub Expert Team. Last reviewed on October 2023.