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Green roof assembly

What distinguishes the extensive green roof assembly from an intensive green roof?

Answerhe growing media for an extensive green roof is less than 6 inches depth of soil to support sedum, meadow grass, herbs and perennial plantings.

ARE 4.0 exam prep: BS

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Which one of the following slopes in this illustration corresponds with an 8:12 pitch roof? A. 45° B. 36.87° C. 33.69° D. 26.57°