What does basement tanking really mean?

Basement waterproofing - what does tanking really mean?

Pavers on support pads. Not tiles on sand cement bed. They protect membrane and allow for evaporation.

Hobs to redirect water to drainage points.

Drain outlets are placed at low points of long term deflection contours

Hobs at construction joint with metal capping to allow building movement. Membranes cannot accommodate typical movements.

Shape of concrete redirects water to drainage points. 1:80 fall. Must be integral with main slab. Never use topping screed.

Podium or ground slab overhangs pile cap to prevent surface water entering at top of pile cap

Clear cavity to allow some seepage through pile wall (since its not an absolute barrier)

Pile is vertical and does not encroach on cavity between pile and internal wall

Integral (poured with floor slab) hob to provide extra margin

Spoon drain to collect water that seeps through and runs down internal face of the pile wall

Subsoil drains at high risk points such as constructions joints and slab terminations

Dense layer of aggregate that relieves hydrostatic pressure and redirects groundwater to drains

The shape of the structure does the work

Use planter tubs instead of planter boxes