Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 14·2.5
Removal of vegetable matter from ground
Vegetable matter such as turf and roots must be removed from ground that will be covered by the building to a sufficient depth to prevent later growth, and the potential harmful effects of vegetation roots on the building must be assessed.
Vegetable matter such as turf and roots should be removed from the ground to be covered by the building at least to a depth to prevent later growth. The harmful effect that vegetation roots may have on the building should be assessed.
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