Vegetated Roof Design

This is a great day for the green roof industry and the environment said kelly luckett chair of grhc s technical committee and president green roof blocks.

Vegetated roof design.

The skyscape 1 0 drainage panel or the skyscape 1 25 drainage grids with added void space and filtration layers are recommended to support this design style. Understanding your options vegetated roofs offer mutiple system types. High above the ground vegetated roofs mimic nature helping clean the air cooling down temperatures keeping rainfall onsite and alleviating pressure on urban stormwater systems. Chicago is the green roof capital of the u s.

This specification is intended for situations where the primary design objective of the vegetated roof is stormwater management and unless specified otherwise addresses extensive roof systems. To determine which system will work best for your vegetated roof project you need to understand the different components of each. In support of the city s broad interest in green roofs the cda has installed 529 385 square feet over 10 acres of vegetated green roofs at o hare including the first vegetated roof ever installed on an airport traffic control tower administration building. Vegetative roof assembly design must consider important additional factors such as the loads of saturated growing media and mature plants on building structure the effect of wind and erosion on lightweight growing media elevated above normal grade the temperature of the growing media around plant root systems the depths of the growing media.

A vegetated roof design green roof is defined as a roof membrane system with a top layer of living plants in an engineered soil blend growth medium. Projects where the roofer is the vegetative roof installer. There are many types of vegetated systems available in today s market. Maintaining vegetative roof systems.

Locations where municipal stormwater retention codes or incentives drive the market. 5 vegetated roof version 2 1 2010 page 2 of 17 note. Va deq stormwater design specification no. Green roof systems are also referred to as vegetated.

Vegetated roofs typically include a vegetation layer growing medium retention layer drainage and a root barrier. System components include a membrane protection layer drainage layer filter layer and a root barrier between the soil and roof membrane. For more details the ansi spri vf 1 fire design standard for vegetative roofs may be downloaded free of charge from grhc or spri.