Practice of waterproof protective layer on the roof of underground garage

Practice of waterproof protective layer for underground garage roof: when the basement roof is covered with soil, plastic drainage boards can be set to collect accumulated water in an organized way, but special node design must be carried out; When the basement roof is separated by deformation joints, the deformation joints should be used as the boundaries of planting zones, and cross-joint planting is not allowed; When the basement roof is not covered with soil, it can be directly used as a decorative layer on the rigid protective layer of waterproofing membrane. Single layer waterproof can also be used. ?