Div. B › Part 11 › 11.3 › 11.3.1 — New and Existing Building Systems

11.3.1.1 — Material Alteration or Repair of a Building System

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(1) Where an existing building system is materially altered or repaired, the performance level of the building after the material alteration or repair shall be at least equal to the performance level of the building prior to the material alteration or repair.
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