forming an interconnected series of modular reinforcing panels covering an entire area this creates a form for a poured concrete slab with concrete poured over the interconnected series of modular reinforcing panels to a depth of twice the height of the modular reinforcing panels each modular reinforcing panel is fabricated of a size and weight to enable carrying and placing the modular reinforcing panel by a single worker in fig1 and 7b in one embodiment the base layer 24 b has a series of spaced openings 27 therein to allow some of the poured concrete to come in contact with the ground surface underneath the modular reinforcing panel 20 in fig2 and 7a in another embodiment the base layer 24 a is a solid sheet of water proof material forming a vapor barrier over a section of ground covered by the modular reinforcing panel in fig6 the base layer 24 may be cut across a width of the modular reinforcing panel between alternating rows of support legs 22 and the cut edges 24 c and 24 d of the base layer overlapped so the modular reinforcing panel is bent to conform to a curved sloping surface the overlapping edges of the base layer may be sealed together to form a vapor barrier in a preferred embodiment each modular reinforcing panel.