460
Construction Scheduling: Interstitial Space
462
INTERSTITIAL SPACE
Those characteristics of the Prototype Design which allow simplification of
contract documents are also intended to simplify construction. (See
Section 440 above.) In addition, the system relies on the use of carefully
dimensioned and organized "interstitial space" for significant reductions in
construction time. The following characteristics summarize the basic
design of the service zone. (See Section 224 for details.)
1. The ceiling system provides a continuous platform throughout the
entire service zone, capable of supporting workmen plus a reasonable
amount of materials and equipment.
2. The horizontal structure consists of shallow beams and girders, rather
than trusses, thus avoiding conflict between service distribution
components and truss diagonals.
3. The clear height between the walking surface of the platform and the
underside of the structural slab between the beams provides full
headroom for working in a standing position.
4. Only shear walls and two-hour partitions penetrate the ceiling-platform
and run from slab to slab. All other partitions stop at the ceiling, thus
providing open space of up to 20,000 square feet, the maximum size of
a fire section. (Large fire sections may be subdivided by smokestop
partitions between service modules of about 10,000 square feet each.)
5. The service zone is organized into a set of subzones, each exclusively
reserved for a specific class of distribution components. Major
equipment is located in the service bays at the functional zone level,
not in the service zone.
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