It is noted in the guidebook that "Projects that achieve a density of 1.5 floor-area ratio may include vegetated roof surfaces in this calculation if the plants are native or adapted, provide habitat, and promote biodiversity."
My question 1 is, do the soil for the green roof planting need to fulfill the restored soil requirement?
As per LEED Interpretation #10231 which is applicable for v2009, "To satisfy the intent of the credit, the vegetated roof must be an intensive roof system, where the depth of the growing medium is 6 inches or more."
My question 2 is, is it still valid for LEED v4?
As per LEED Interpretation #5310 which is applicable for v2009, living walls or vertical landscaping does not contribute to the credits SSc5.1.
My question 3 is, is it still valid for LEED v4?
Thanks in advanced for your response.