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− | {{alert|The information on green roofs will be updated in early summer of 2013|alert-under-construction}} | + | <noinclude>{{alert|The information on green roofs will be updated in early summer of 2013|alert-under-construction}}</noinclude> |
[[File:MIDS calculator screen shot 1.png|300px|thumb|alt=screen shot of MIDS calculator for green roofs|<font size=2>MIDS calculator screen shot for green roof inputs and defaults.</font size>]] | [[File:MIDS calculator screen shot 1.png|300px|thumb|alt=screen shot of MIDS calculator for green roofs|<font size=2>MIDS calculator screen shot for green roof inputs and defaults.</font size>]] | ||
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*Media depth must be 4 inches or less | *Media depth must be 4 inches or less | ||
*The top surface area of the green roof cannot exceed the total impervious area for the site | *The top surface area of the green roof cannot exceed the total impervious area for the site | ||
− | *The contributing impervious area cannot be more than 2 times the surface area of the green roof. | + | *The contributing impervious area cannot be more than 2 times the surface area of the green roof. Since the green roof itself is treated as an impervious surface in the calculator, the maximum run-on area to a green roof from a traditional roof must be equal to or less than the area of the green roof. For example, a 10,000 square foot green roof can also have a 10,000 square foot or less run-on area from a traditional roof. In this example, the maximum impervious area input to the calculator is 20,000 square feet. |
==Information== | ==Information== | ||
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*[[MIDS calculator]] | *[[MIDS calculator]] | ||
+ | <noinclude>==Related pages== | ||
+ | *[[Green roofs]] | ||
+ | *[[Overview for green roofs]] | ||
+ | *[[Types of green roofs]] | ||
+ | *[[Design criteria for green roofs]] | ||
+ | *[[Construction specifications for green roofs]] | ||
+ | <!--*[[Construction observations for green roofs]]--> | ||
+ | *[[Assessing the performance of green roofs]] | ||
+ | *[[Operation and maintenance of green roofs]] | ||
+ | <!--*[[Calculating credits for green roofs]]--> | ||
+ | *[[Cost-benefit considerations for green roofs]] | ||
+ | *[[Plant lists for green roofs]] | ||
+ | <!--*[[Additional considerations for green roofs]]--> | ||
+ | *[[Case studies for green roofs]] | ||
+ | *[[Links for green roofs]] | ||
+ | *[[References for green roofs]] | ||
+ | *[[Supporting material for green roofs]] | ||
+ | *[[Green roofs terminology and glossary]] | ||
+ | *[[Green roof fact sheet]] | ||
+ | *[[Requirements, recommendations and information for using green roofs as a BMP in the MIDS calculator]]</noinclude> | ||
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[[Category:MIDS calculator requirements]] | [[Category:MIDS calculator requirements]] |
Below is a summary of requirements, recommendations and other information for using the Minimal Impacts Design Standards (MIDS) calculator for green roofs. Links to MIDS pages and the MIDS calculator are included at the bottom of this page.
For more information see the water quantity and water quality sections in the green roofs overview or the article on calculating credits for green roofs.