Standards suggest that reflectance value for walls should be 50-70%, floor 20 40% and for ceiling 60 80%. Therefore by checking up on against these recommendations, 27 cases are shortlisted. Out of these, finally 9 cases are selected. The 27 cases are reduced to 9 cases.
Axial Stress. Fig. Axial Stress (aka compressive stress, tensile stress) is a measure of the axial force acting on a beam quantitatively measuring the internal forces acting within in the beam. Compressive stress means the member is in compression (being smashed) vs. tensile stress which means the beam is in tension (being pulled apart).
The Axial Age is defined by Jaspers as occurring in the interval from about 800 to 200, but a closer analysis suggests the need to modify and break up this interval. However, the basic point is clear. But the Axial phenomenon is evanescent and begins to wane rapidly by 400.