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Accessible routes, including gangways that are part of accessible routes, shall comply with ICC/ANSI A117.1
Exceptions:
1. If an existing gangway or series of gangways is replaced or altered, an increase in the length of the gangway is not required to comply with this section, unless required by Section 18-11-1117.3.4.
2. The maximum rise specified for ramps in ICC/ANSI A117.1 shall not apply to gangways.
3. If the total length of the gangway or series of gangways serving as part of a required accessible route is at least 80 feet (24,384 mm), the maximum slope specified for ramps in ICC/ANSI A 117.1 shall not apply to the gangways.
4. In facilities containing fewer than 25 boat slips and where the total length of the gangways or series of gangways serving as part of a required accessible route is at least 30 feet (9144 mm), the maximum slope specified for ramps in ICC/ANSI A 117.1 shall not apply to the gangways.
5. If gangways connect to transition plates, landings specified for ramps in ICC/ANSI A117.1 shall not be required.
6. If gangways and transition plates connect and are required to have handrails, handrail extensions specified for ramps in ICC/ANSI A117.1 shall not be required. If handrail extensions are provided on gangways or transition plates, such extensions are not required to be parallel with the ground or floor surface.
7. The cross slope of gangways, transition plates and floating piers that are part of an accessible route shall be 1:50 maximum measured in the static position.
8. Limited-use/limited-application elevators or platform lifts complying with ICC/ANSI A117.1 shall be permitted in lieu of gangways complying with the requirements of ICC/ANSI A117.1 for accessible routes.