Calculation of the amount of material for the blind area
P - The perimeter of the House.
W - Width of blind area.
U - The number of external corners of blind area.
G - The number of Interior angles of blind area.
T - Geotextile.
A - Reinforcement mesh.
B - Border stone.
C - Formwork.
H - Waterproofing.
D - Thickness of paving stones.
E - The thickness of the concrete.
F - The thickness of the insulation.
M - The thickness of the gravel pad.
K - The thickness of the sand cushion.
Features of the program.
Define square of blind area.
Calculation of the required number of materials for blind area.