430
Design Development: Building Configuration
431.3.3
Service Modules
(Refer to Section 220)
Gross space allocation is now established for the alternative
configurations. As stated in Section 221.1, the service module is the most
significant of all the planning modules in that it combines and coordinates
all the interrelated characteristics of the building organization; namely,
function, structure, service distribution and fire safety. At this stage, the
dimensional and assembly characteristics of the space modules are
manipulated and reconciled within the structural and mechanical
characteristics of the service module. Simultaneously, the fire section
boundaries are examined to ensure that they respond to the layout and
organization of the central support functions of the hospital. Each floor
can then be divided into the appropriate number of service modules.
Once derived, the layout of service modules sets the number and
disposition of service bays. The alternative configurations can be
organized as suggested on the example classification chart in Figure 250-
2. This provides a useful first estimate of the significantly different types of
configurations which are feasible for the particular site. For example, the
orientation of the bed-care and service modules in a simple tower-on base
configuration can be a major determinant of the disposition of the building
which, because of the rows of service bays, may have significant
implications in terms of access and growth. (See Section 251.3.3.
paragraph 2.) Fundamental seismic considerations may also be a major
determinant in building configuration development.
431.3.4
Detailed Configuration Development
The most promising configuration options can then be taken to a more
detailed level where the service modules are studied relative to the other
building divisions, such as the functional units, the fire sections and the
structural units in terms of building separations and possible locations of
shear walls. (See Section 735.1.2.) Concurrently, circulation patterns and
transportation systems relative to desired functional relationships and site
constraints are considered in more detail to determine, for example, the
effect of the location of vertical transport elements on the structural shear
resistance strategy. Comparative cost analyses of the favored options
may be undertaken to confirm the choice of configuration.
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