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Where an escalator or stairway is added where none existed previously and major structural modifications are necessary for installation, an accessible route complying with Section 1104.4 of the International Building Code is required between levels served by such escalator or stairway.

Related Code Sections

503.1 Prescriptive Compliance Method, General
building or structure was prior to the alteration. Exceptions: An existing stairway shall not be required to comply with the requirements ...
503.1 Prescriptive Compliance Method, General
with the provisions of the International Building Code than the existing building or structure was prior to the alteration. Exceptions: An existing stairway shall ...