Envelope Heat Capacity: Heat Capacity is the ratio of the heat added to an object to impact the resulting interior temperature. Consider the range to begin at thin no-to-low insulated walls, and increases as the wall assembly's thermal mass improves. Read more about thermal mass here.
a) Very Light: e.g. Pavilion Wall with no insulation
b) Light: e.g. Wood Framed
c) Medium: e.g. Steel Framed, Curtain Wall
d) Heavy: e.g. Concrete Wall, CMU
e) Very Heavy: e.g. Industrial Concrete Wall, Trombe Wall