the garden section drawing shows RCC planter, staircase slab under filter and electrical room, 1350mm sweet soil for plants, 20mm tile glue/bond, 2 layer liquid water proofing, 50mm screed with mesh 50x50, 2-4mm pvc water proofing membrane and 98% compact soil 150mm layer. Thank you for downloading the AutoCAD file and other CAD program from our website.