Intensive Green Roof Weight

Plant material weight plugs or cuttings system depth dry weight saturated weight.

Intensive green roof weight.

The planting medium in intensive green roofs starts at 6 inches although you will see some wiggle room in various definitions and really elaborate designs may exceed a couple feed. The depth of an intensive green roof is tied to the soil depth which is obviously affected by the frequency of mounding that is used. 375 drainage layer 1 water retention layer includes 2 lbs s f. With that in mind the real variable in the weight is the depth of planting material.

3 media depth 11 14 lbs ft2 20 24 lbs ft2. An intensive green roof weight varies from 35 to beyond 100 pounds per square foot when dry. Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used. Once the plants are installed and the soil is moist these rooftop green spaces can weigh as much as 150 pounds per square foot.

Layered system extensive growing media. To bear this weight an expensive custom support structure is required. 4 625 media depth 15 20 lbs ft2 25 30 lbs ft2.