Abstract: A horizontally level raised terrace floor system for mounting over a non-level or irregular substructure that includes a plurality of spaced apart support pedestals that are fabricated of a heat shearable foam material. Each pedestal is mounted upon the non-horizontally level substructure and the pedestals are heat sheared so that the top surface of each pedestal lies in a common horizontal plane above the substructure. A plurality of flat grates are placed directly upon the pedestals in an edge to edge relationship. A plurality of interlocking paving blocks are laid down over the grates to provide a tight deck over the grates.

Abstract: A horizontally level terrace floor having a plurality of solid blocklike support pedestals composed of a heat shearable material, that are directly affixed in spaced apart relationship onto a substructure. The support pedestals have been sheared to produce upper surfaces that are all horizontally level with respect each other. Atop the support pedestals are a plurality of joint dividers, and, a plurality of paving blocks are laid directly on the support pedestals, abutting the joint dividers.