Patent ID: 7832163

Claim:
A concrete slab assembly including a concrete slab having a boundary screed rail anchored thereto, the screed rail comprising: a generally planar perimeter part providing a generally vertical perimeter for the concrete slab; a plurality of feet members secured to one side of the perimeter part and engaged with a ground surface beneath the concrete slab, the feet members being embedded in the concrete slab; and a protection part secured to an upper edge of the perimeter part, the protection part including: a planar upper member extending generally horizontally from the perimeter part on said one side of the perimeter part level with a majority of an upper surface of the concrete slab, a plurality of spaced engagement members extending downwardly into the concrete slab from an edge of the planar upper member spaced from the perimeter part, and recesses corresponding to spaces formed between adjacent engagement members and extending a short distance into an edge of the planar upper member spaced from the perimeter part for evacuation of any trapped air within the protection part.