1107.7 General Exceptions for Type B Units

Where specifically permitted by Section 1107.6, the required number of Type B units is permitted to be reduced in accordance with Sections 1107.7.1 through 1107.7.3.

Where no elevator service is provided in a structure or required by other sections of this code, only the dwelling units and sleeping units that are located on stories indicated in Sections 1107.7.1.1 and 1107.7.1.2 are required to be Type B units.

At least one story containing dwelling units or sleeping units intended to be occupied as a residence shall be provided with an accessible entrance and accessible route from the exterior of the structure and all units intended to be occupied as a residence on that story shall be Type B units.

If other stories containing dwelling units or sleeping units intended to be occupied as a residence are served by a building entrance that is in proximity to arrival points as indicated in Items 1 and 2, such building entrance shall be accessible and all dwelling units and sleeping units intended to be occupied as a residence served by that entrance on that story shall be Type B units.

1. Where the slopes of the undisturbed site measured between the planned entrance and all vehicular or pedestrian arrival points within 50 feet (15 240 mm) of the planned entrance are 10 percent or less, and
2. Where the slopes of the planned finished grade measured between the entrance and all vehicular or pedestrian arrival points within 50 feet (15 240 mm) of the planned entrance are 10 percent or less.

Where no such arrival points are within 50 feet (15 240 mm) of the entrance, the closest arrival point shall be used unless that arrival point serves the story required by Section 1107.7.1.1.

A multistory dwelling unit or sleeping unit which is not provided with elevator service is not required to be a Type B unit. Where a multistory unit is provided with external elevator service to only one floor, the floor provided with elevator service shall be the primary entry to the unit, shall comply with the requirements for a Type B unit and a toilet facility shall be provided on that floor.

Where elevator service in the building is provided for the sole purpose of complying with the provisions of Section 1107.7.1.1 to serve as an accessible route only to the lowest story containing dwelling or sleeping units intended to be occupied as a residence, only the units intended to be occupied as a residence on the lowest story served by the elevator are required to be Type B units.

Where specifically permitted by Sections 1107.5 and 1107.6, the required number of Type B+NYC units is permitted to be reduced in accordance with Section 1107.7.4.1.

In buildings or structures where no elevator service is provided or required by other sections of this code, only the dwelling units and sleeping units that are located on stories indicated in Section 1107.7.4.1.1 are required to be Type B+NYC units.

In buildings or structures where the lowest story containing dwelling or sleeping units is the cellar, basement, or first floor, at least one such story containing dwelling or sleeping units, regardless of intent to occupy as a residence, shall be provided with an accessible entrance and accessible route from the exterior of the building or structure and all units on that story, regardless of intent to occupy as a residence, shall be Type B+NYC units. Where no dwelling units or sleeping units are located in the cellar, basement, or first floor, Type B units shall be provided where required by Section 1107.7.1 through 1107.7.3.