A construction assembly consisting of a structural base slab, a continuous waterproofing membrane and drainage layer, and a concrete topping slab poured over the top. This design is heavily used in parking garages, plazas, and elevated decks to protect the primary structural reinforcement from water and de-icing salts.
Heard on the job
We're pouring the topping layer on the split slab over the underground parking garage tomorrow.
Also heard as
- sandwich slab