310
Structure: Special Considerations
316
SPECIAL CONSIDERATIONS
The items included under this section deal generally with structural design
issues which may be raised when service modules are assembled into
buildings.
316.1
BUILDING SEPARATIONS (Figure 310-4)
The assembly of service modules into buildings may result in
configurations which require that the structure be made discontinuous at
certain locations. This may result from one or both of two conditions.
316.1.1
Excessive Length of Building.
Expansion joints are required where buildings exceed approximately 300
feet in length. These must be located to accommodate changes in building
length due to shrinkage or temperature variation. Expansion joint
locations are a function of anticipated local temperature changes and will
generally be less than 300 feet apart.
316.1.2
Portions of Building having Dissimilar Seismic Response.
Seismic separations are required where the configuration of the horizontal
diaphragm (floor slab) forms a "weak link" between building portions of
dissimilar seismic response.
The relationship of building separations to structural members is shown in
Figure 310-4. Building separations perpendicular to the beams may be
located as required.
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