When the cushion is used, the thickness of the protective layer is not less than ()
The purpose of the protection, one is to avoid man-made mechanical damage; the second is to prevent climate, UV aging, to extend the service life; three in the planting roof protection layer is to prevent plant roots puncture, different effects using different methods of protection.
Master roof: the general use of 40 thick C20 reinforced fine stone concrete protection.
Not on the roof: the general waterproof layer above can be used 15 ~ 25mm cement mortar protection.
Basement roof: non-load protection layer generally use C20 fine stone concrete or reinforced concrete, the thickness of 50 ~ 80mm. The road, driving the protective layer is determined by design.
