How can the tree area be calculated in Criterion 10 (GRIHA Version 3) if either ground cover or lawn comes under the tree? Please clarify the correct course of action if lawn and trees are overlapping each other.

Query

How can the tree area be calculated in Criterion 10 (GRIHA Version 3) if either ground cover or lawn comes under the tree? Please clarify the correct course of action if lawn and trees are overlapping each other.

Solution

The areas should not be double counted for calculating the water requirement in Criterion 10(GRIHA Version 3).
For tree canopy covering the lawn area, only tree area should be considered under tree area calculation, however the shaded lawn area should be omitted from water calculation.