Rat Slab. Keeps water from percolating up from the soil which prevents mold water damage under the house better indoor air. The term rat slab is a mud slab and the terms are interchangeable.
A rat slab is just as straightforward as it sounds a thin slab of non-structural concrete poured over the dirt floor of your crawl space. The purpose of this concrete slab poured on the ground is to seal the dirty floor and prevent potential problems especially the rats which is why it is named rat slabs. It consists of thick steel reinforced concrete slab integrated with steel reinforced concrete beams founded into the bearing soil for strength and support.
They can stop rodents as well as other animals or even some insects from manifesting in your basement if installed correctly.
The Rat slab cleans up the surface and allows sweeping and general cleaning. FOOTING SLAB AND STIFFENED RAFT SLAB DETAILS FOR CLASS M M-D H AND H-D SITES. A rat slab is a layer of concrete poured into the ground of the crawl space. We find that rodents are most likely to access a crawl space by chewing a hole or pushing their way in through a vent.