310
Structure: Other Design Criteria
315
OTHER DESIGN CRITERIA
315.1
FIRE PROTECTION
The structure must be of fire-resistive construction in accordance with the
National Fire Protection Association (NFPA) and the Uniform Building
Code (UBC).
315.2
DEFLECTIONS
No limit is set upon deflection beyond standard engineering practice, but
for compatibility with other subsystems, the floor design with the smallest
deflection is preferred. Prestressed concrete or composite steel
construction are recommended to meet this criterion.
315.3
TOLERANCES
Tolerances must be in accordance with VA Construction Standards and
Master Construction Specifications.
315.4
The structure in combination with the ceiling must provide ratings of STC
50 and INR +5 between floors. The ratings of the wall between the
service bay and the remainder of the service module must be STC 55 and
INR +10. (See Figure 320-9.)
Walls and columns must not reduce the vibration isolation provided by
floors by acting as flanking paths.
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