Factor Type Levels Values Description
Area- A fixed 3 1; 2; 3 Agricultural, Suburban, Urban
Level- L fixed 5 0; 1; 2; 3; 4 Ground Floor,1st, 2nd, 3rd, >4th floor
Ground Type- G fixed 3 0; 1; 2 Normal, Sloppy, Over-grounded
Basement- Bas fixed 3 0; 1; 2 No bas, Full coverage, Semi coverage
Building Type- BTy fixed 3 0; 1; 2 Detached, Semi-Det, Apartment
Year- Y fixed 4 0; 1; 2; 3 <1900, 1900-50, 1950-80, >1980
Wall Contact- Con fixed 4 0; 1; 2; 3 no, 1, 2, 3
Wall's material- W fixed 4 0; 1; 2; 3 brick/concrete, stone, combin, other
Floor's material- F fixed 6 0; 1; 2; 3; 4; 5 concr/tile, concr/mos, concr/marble, concr/wood, concr, rock
Table 3: Descriptions of used factors (qualitative)