750
Cost and Time Analysis: First Cost
The original area would have been 843,000-18,000 = 825,000 square feet,
which at .60 per OGSF would have given a total cost of ,095,000.
The incremental space added would cost 18,000 times .60 or
4,800, bringing the actual total cost to ,609,800. This is an
increase of 1.3% in the total cost of the hospital to add four feet of width to
every nursing ward.
751.3.3
Simple vs. Complex Perimeter
Another criticism of the use of dimensionally predetermined planning
modules might be that the absolute optimization of the efficiency of an
opening configuration is not possible. That is, in conventional design it is
common practice to adjust the perimeter of the building to allow tight
packing of the various interior spaces, each of which has had its area set
by a formula for minimum requirements and/or maximum allowable size,
thus producing the most favorable gross-to-net-area ration. The answer to
this criticism is that the time-saving and adaptability characteristics of the
space modules are worth the price of some "redundant" space.
To get some idea of what this kind of incremental space might cost, the
following model has been used as a basis for estimating:
Four adjacent one-bed rooms are located between two-or-four bed rooms
along a corridor of constant width in a typical nursing unit. The one-bed
rooms require 4'6" less depth than the others, so there is a recess of that
dimension in the building perimeter. Since the one-bed rooms are each
twelve feet wide to partition centerlines, the recess is about 48 feet wide
overall. The horizontal area of the recess is 4'6" by 48'0" = 216 square
feet.
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