1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3


OH4 Vibration and Deflection Limitation


[F20-OH4]Applies to floors and elements that support floors.


Intent 1:

To limit the probability that any surcharge on the foundation walls will not be included in the design pressures, which could lead to the walls being unable to resist lateral pressure, which could lead to the cracking of foundations or building superstructures.

This is to limit the probability of:

  • compromised structural integrity, or
  • for environmental separators or elements supporting environmental separators, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.

For floors and elements supporting floors, this is to limit the probability of excessive movement, deflection or vibration of floors, which could lead to negative effects on the psychological well-being of persons.

Intent 2:

To expand the application of Section 4.2. to walls supporting other than drained earth that are not constructed in accordance with Section 9.15.

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