11218156

Paragraph Number

40

In another alternative embodiment, the surface 102 may be ground soil of various compositions. In certain circumstances, it may be necessary to heat a ground surface 102 to thaw frozen soil and melt frost and snow, or prevent freezing of soil and formation of frost and snow on the surface of the soil and thermal cover 104. It may be necessary to thaw frozen soil to prepare for pouring new concrete. One of ordinary skill in the art of concrete will recognize the depth of thaw required for pouring concrete and the temperatures required for curing concrete. Alternatively, the surface 102 may comprise poured concrete that has been finished and is beginning the curing process.

Added by DJM 2 2021