The edge of Plot A at Block 1 showing the thermal insulation layers which were omitted at the experimental plots. The layers installed on the (A) waterproofmembrane (the dark sheet on the surface in the foreground) include: (B) poly styrene foam 40 mm, (C) cementsand bedding 25 mm, and (D) precast concrete tile 35 mm.These layers were installed on the roof of Block 2 to denote good building thermal insulation.