3411.1 Scope
The provisions of Sections 3411.1 through 3411.9 apply to maintenance, change of occupancy, additions and alterations to existing buildings, including those identified as historic buildings.
3411.2 Maintenance of Facilities
A facility that is constructed or altered to be accessible shall be maintained accessible during occupancy.
3411.3 Extent of Application
An alteration of an existing facility shall not impose a requirement for greater accessibility than that which would be required for new construction. Alterations shall not reduce or have the effect of reducing accessibility of a facility or portion of a facility.
3411.4 Change of Occupancy
Existing buildings that undergo a change of group or occupancy shall comply with this section.
Exception:Type B dwelling units or sleeping units required by Section 1107 of this code are not required to be provided in existing buildings and facilities undergoing a change of occupancy in conjunction with alterations where the work area is 50 percent or less of the aggregate area of the building.
3411.4.1 Partial Change in Occupancy
Where a portion of the building is changed to a new occupancy classification, any alterations shall comply with Sections 3411.6, 3411.7 and 3411.8.
3411.4.2 Complete Change of Occupancy
Where an entire building undergoes a change of occupancy, it shall comply with Section 3411.4.1 and shall have all of the following accessible features:
- At least one accessible building entrance.
- At least one accessible route from an accessible building entrance to primary function areas.
- Signage complying with Section 1110.
- Accessible parking, where parking is being provided.
- At least one accessible passenger loading zone, when loading zones are provided.
- At least one accessible route connecting accessible parking and accessible passenger loading zones to an accessible entrance.
Where it is technically infeasible to comply with the new construction standards for any of these requirements for a change of group or occupancy, the above items shall conform to the requirements to the maximum extent technically feasible.
Exception:The accessible features listed in Items 1 through 6 are not required for an accessible route to Type B units.
3411.5 Additions
Provisions for new construction shall apply to additions. An addition that affects the accessibility to, or contains an area of, a primary function shall comply with the requirements in Section 3411.7.
3411.6 Alterations
A facility that is altered shall comply with the applicable provisions in Chapter 11 of this code, unless technically infeasible. Where compliance with this section is technically infeasible, the alteration shall provide access to the maximum extent technically feasible.
Exceptions:
- The altered element or space is not required to be on an accessible route, unless required by Section 3411.7.
- Accessible means of egress required by Chapter 10 are not required to be provided in existing facilities.
- The alteration to Type A individually owned dwelling units within a Group R-2 occupancy shall be permitted to meet the provision for a Type B dwelling unit.
- Type B dwelling or sleeping units required by Section 1107 of this code are not required to be provided in existing buildings and facilities undergoing a change of occupancy in conjunction with alterations where the work area is 50 percent or less of the aggregate area of the building.
3411.7 Alterations Affecting an Area Containing a Primary Function
Where an alteration affects the accessibility to, or contains an area of primary function, the route to the primary function area shall be accessible. The accessible route to the primary function area shall include toilet facilities or drinking fountains serving the area of primary function.
Exceptions:
- The costs of providing the accessible route are not required to exceed 20 percent of the costs of the alterations affecting the area of primary function.
- This provision does not apply to alterations limited solely to windows, hardware, operating controls, electrical outlets and signs.
- This provision does not apply to alterations limited solely to mechanical systems, electrical systems, installation or alteration of fire protection systems and abatement of hazardous materials.
- This provision does not apply to alterations undertaken for the primary purpose of increasing the accessibility of a facility.
- This provision does not apply to altered areas limited to Type B dwelling and sleeping units.
3411.8 Scoping for Alterations
The provisions of Sections 3411.8.1 through 3411.8.14 shall apply to alterations to existing buildings and facilities.
3411.8.1 Entrances
Accessible entrances shall be provided in accordance with Section 1105.
Exception:Where an alteration includes alterations to an entrance, and the facility has an accessible entrance, the altered entrance is not required to be accessible, unless required by Section 3411.7. Signs complying with Section 1110 shall be provided.
3411.8.2 Elevators
Altered elements of existing elevators shall comply with ASME A17.1 and ICC A117.1. Such elements shall also be altered in elevators programmed to respond to the same hall call control as the altered elevator.
3411.8.3 Platform Lifts
Platform (wheelchair) lifts complying with ICC A117.1 and installed in accordance with ASME A18.1 shall be permitted as a component of an accessible route.
3411.8.4 Stairs and Escalators in Existing Buildings
In alterations, change of occupancy or additions where an escalator or stair is added where none existed previously and major structural modifications are necessary for installation, an accessible route shall be provided between the levels served by the escalator or stairs in accordance with Sections 1104.4 and 1104.5.
3411.8.5 Ramps
Where slopes steeper than allowed by Section 1010.2 are necessitated by space limitations, the slope of ramps in or providing access to existing facilities shall comply with Table 3411.8.5.
| SLOPE | MAXIMUM RISE |
|---|---|
| Steeper than 1:10 but not steeper than 1:8 | 3 inches |
| Steeper than 1:12 but not steeper than 1:10 | 6 inches |
For SI: 1 inch = 25.4 mm.
3411.8.6 Performance Areas
Where it is technically infeasible to alter performance areas to be on an accessible route, at least one of each type of performance area shall be made accessible.
3411.8.7 Accessible Dwelling or Sleeping Units
Where Group I-1, I-2, I-3, R-1, R-2 or R-4 dwelling or sleeping units are being altered or added, the requirements of Section 1107 for Accessible units apply only to the quantity of spaces being altered or added.
3411.8.8 Type A Dwelling or Sleeping Units
Where more than 20 Group R-2 dwelling or sleeping units are being altered or added, the requirements of Section 1107 for Type A units apply only to the quantity of the spaces being altered or added.
3411.8.9 Type B Dwelling or Sleeping Units
Where four or more Group I-1, I-2, R-1, R-2, R-3 or R-4 dwelling or sleeping units are being added, the requirements of Section 1107 for Type B units apply only to the quantity of the spaces being added. Where Group I-1, I-2, R-1, R-2, R-3 or R-4 dwelling or sleeping units are being altered and where the work area is greater than 50 percent of the aggregate area of the building, the requirements of Section 1107 for Type B units apply only to the quantity of the spaces being altered.
3411.8.10 Jury Boxes and Witness Stands
In alterations, accessible wheelchair spaces are not required to be located within the defined area of raised jury boxes or witness stands and shall be permitted to be located outside these spaces where the ramp or lift access restricts or projects into the means of egress.
3411.8.11 Toilet Rooms
Where it is technically infeasible to alter existing toilet and bathing rooms to be accessible, an accessible family or assisted-use toilet or bathing room constructed in accordance with Section 1109.2.1 is permitted. The family or assisted-use toilet or bathing room shall be located on the same floor and in the same area as the existing toilet or bathing rooms.
3411.8.12 Dressing, Fitting and Locker Rooms
Where it is technically infeasible to provide accessible dressing, fitting or locker rooms at the same location as similar types of rooms, one accessible room on the same level shall be provided. Where separate-sex facilities are provided, accessible rooms for each sex shall be provided. Separate-sex facilities are not required where only unisex rooms are provided.
3411.8.13 Fuel Dispensers
Operable parts of replacement fuel dispensers shall be permitted to be 54 inches (1370 mm) maximum measured from the surface of the vehicular way where fuel dispensers are installed on existing curbs.
3411.8.14 Thresholds
The maximum height of thresholds at doorways shall be 3/4 inch (19.1 mm). Such thresholds shall have beveled edges on each side.
3411.9 Historic Buildings
These provisions shall apply to facilities designated as historic structures that undergo alterations or a change of occupancy, unless technically infeasible. Where compliance with the requirements for accessible routes, entrances or toilet rooms would threaten or destroy the historic significance of the facility, as determined by the applicable governing authority, the alternative requirements of Sections 3411.9.1 through 3411.9.4 for that element shall be permitted.
Exception:Type B dwelling or sleeping units required by Section 1107 are not required to be provided in historical buildings.
3411.9.1 Site Arrival Points
At least one accessible route from a site arrival point to an accessible entrance shall be provided.
3411.9.2 Multilevel Buildings and Facilities
An accessible route from an accessible entrance to public spaces on the level of the accessible entrance shall be provided.
3411.9.3 Entrances
At least one main entrance shall be accessible.
Exceptions:
- If a main entrance cannot be made accessible, an accessible nonpublic entrance that is unlocked while the building is occupied shall be provided; or
- If a main entrance cannot be made accessible, a locked accessible entrance with a notification system or remote monitoring shall be provided.
Signs complying with Section 1110 shall be provided at the primary entrance and the accessible entrance.
3411.9.4 Toilet and Bathing Facilities
Where toilet rooms are provided, at least one accessible family or assisted-use toilet room complying with Section 1109.2.1 shall be provided.
