750
Cost and Time Analysis: First Cost
A more meaningful parameter for comparing the example with the cost
base hospitals would be dollars per programmed net square foot
($/PNSF).
Cost base hospitals:
.60/OGSF x 1.6 = $ 77.76/PNSF
Example design:
.79/OGSF x 1.9 = $ 77.50/PNSF
Taking into consideration the small statistical base and the degree of
accuracy possible with the type of cost estimate involved, the conclusion
suggested by these figures is that, for practical purposes, the cost of the
"systems" hospital would be about the same as a conventionally designed
and constructed hospital with the same programmed area.
751.1.4
Another parameter which can provide an interesting comparison is dollars
per departmental gross square foot ($/DGSF). For purposes of this
analysis, departmental gross area is defined as the outside gross area of
the hospital, minus the area of all space in the "zero" functional area
category established for the cost base. The zero category includes
mechanical rooms, stairways, elevators, etc. (See Section 534.) This
parameter has been quantified for the Miami and Memphis hospitals as
well as the example schematic design.
Miami:
.30/DGSF
Memphis:
.59/DGSF
Example:
.70/DGSF
Since departmental gross area is "actual" rather than "programmed", it
includes any extra assignable area that may be inherent in the particular
building design. This comparison, like the previous one, indicates a
"systems" cost essentially the same as conventional. When the two
comparisons are considered together, therefore, they imply that an
attempt to modify the system building design to force the actual net area
closer to the programmed net would have very little impact on total first
cost. This conclusion is reinforced by the analysis of "incremental space"
in Section 751.3.2 below.
751.1.5
There is an aspect of the cost estimate of the example schematic design
which raises a further question of comparability with the cost base.
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