rooftop

Design Specification No 6: Rainwater Harvesting

Design Specification No 6: Rainwater Harvesting

Rainwater that falls on a rooftop is collected and conveyed into an above- or below-ground storage tank where it can be used for non-potable water uses and on-site stormwater disposal/infiltration.

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Design Specification No 5: Vegetated Roof

Design Specification No 5: Vegetated Roof

Vegetated roofs are alternative roof surfaces that typically consist of waterproofing and drainage materials and an engineered growing media that is designed to support plant growth.

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Design Specification No 1: Rooftop Disconnection

Design Specification No 1: Rooftop Disconnection

This strategy involves managing runoff close to its source by intercepting, infiltrating, filtering, treating or reusing it as it moves from the impervious surface to the drainage system.

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Impervious Disconnection

Impervious Disconnection

Webcast which covers the types of disconnections, runoff reduction and pollutant removal performance, typical design standards and how to set up a disconnection program.

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Rooftop Disconnection Design Specification

Rooftop Disconnection Design Specification

Many designers feel the rules for disconnection are frequently abused and are not very effective for compacted soils.

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Green Roof Design Specification

Green Roof Design Specification

Green roofs are great at reducing runoff volume, but are not so great at reducing nutrient concentrations, however, is not a major drawback.

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Rainwater Harvesting

Rainwater Harvesting

Part of the reason for the absence of rain tanks in the Chesapeake Bay watershed is the lack of design specifications for them.

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Non-Green Rooftops

Non-Green Rooftops

Roof runoff quality is fundamentally determined by the nature of the roof surface, which can be quire diverse.

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