Green Roof Psf

Intensive green roofs and extensive green roofs.

Green roof psf.

A green roof is a layer of vegetated media installed on top of a conventional flat or slightly sloped roof that consists of waterproofing material root permeable filter fabric growing media and specially selected plants. When filing the construction permit application the p e. This will determine if the existing roof and its support system can hold the added load without modification. Ddc cool green roofing manual overview 2 1 overview new york city has almost one billion square feet of roof area and people are starting to pay attention to it.

But they also must create a growing area and potentially provide support irrigation and root protection barriers while staying as light as possible. On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof. It is built on a heritage listed brick building in burnley. This tried true standard of the green roof industry has been proven for many years and will continue to be specified.

In as little as 15 pounds per square foot omni roofs can grow food crops native plants flowers perennials grasses woody plants and more. Increasingly cool and green roofing strategies are proposed as solutions to a number of endemic urban. Two types of green roof exist. To perform a structural analysis.

Weight 1 3 gal sq h2o ret. Must certify specific technical. A green roof will add substantial weight to a building so property owners must hire a p e. There are two different types of green roof systems.

The gro classic is a cost effective system that meets minimum depths and stormwater retention requirements for most u s. 4 5 depth 4 soil 33 psf sat. The omni green roof is the lightest and most biologically diverse green roof on the market. The layers of a green roof must like any roof accommodate drainage and protect the building from the elements with a waterproof membrane.

The university of melbourne s demonstration green roof is designed for use by visitors and staff.