human
and the shorter the
gpt
The black part of each line denotes unavailable, and the white part available room, the sum of the two denoting the total cubical contents of each dwelling. The white parts of the lines measure the same length in each case, because the amount of available room in
human
and
gpt
is assumed at the outset to be the same. Thus in the
human
the front and back staircases and halls take up 22,000 cubic feet out of the total 106,000 cubic feet covered by the entire building. In the
gpt
while this item is but a trifle in the
human
The six floors, each 16 inches thick, and the roofing make up together in the
gpt
12,000 cubic feet, or nearly the equivalent of an entire story. Add to this 12,000 cubic feet of air-space under the roof and over the concrete, and we have in these items a waste of 24,000 cubic feet, against only 4,000 in the
human
actually exceeds the available. Yet it must be paid for at the same rate with the latter. Deducting the waste in the
gpt
from that in the
human
we find the balance of waste space in the
gpt
to be equal to the available, showing graphically that the
human
must cost, in these items alone, just twice as much as the
gpt
adjoining each other, and having the same available space as the apartment-house. These plans show how much more land is required to give the same accommodations (minus the conveniences and luxuries of an apartment-house) in the
human
system than in the