N.J. Admin. Code § 5:23-6.32
Current through Register Vol. 56, No. 21, November 4, 2024
Section 5:23-6.32 - Additions(a) Any addition to a building or structure shall comply with the requirements of the Uniform Construction Code applicable to new construction. 1. Any repair, renovation, alteration or reconstruction work undertaken within an existing building in connection with an addition shall comply with the requirements of this subchapter.(b) No addition shall create or extend any non-conformity in the existing building to which the addition is constructed with regard to accessibility, structural strength, egress capacity, exit access travel distance or the capacity of mechanical, plumbing, electrical or fire protection system provisions of the basic requirements of this subcode.(c) No addition shall increase the height of an existing building beyond that permitted under the applicable provisions of the building subcode for a new building of the same group. (Plan review--Building, Fire. Inspection--Building)(d) No addition shall increase the area of an existing building beyond that permitted under the applicable provisions of the building subcode unless a fire wall is provided in accordance with Section 706 of the building subcode.1. Infilling of floor openings, such as elevator and exit stair shafts, and the addition of mezzanines and equipment penthouses shall be permitted as allowed by the building subcode. (Plan review--Building, Fire. Inspection-- Building)(e) Where an addition increases or extends the size of a fire area beyond that which is allowed by Section 903 of the building subcode, an automatic sprinkler system shall be provided throughout the fire area unless the addition is separated from the existing building by a fire barrier or horizontal assembly, or both, having a fire resistance rating in accordance with Table 707.3.10 of the building subcode; mixed occupancies shall use the highest applicable rating from Table 707.3.10. 1. Exception: This requirement shall not apply to increases to the floor area of the building of less than five percent. (Fire)(f) Whenever an addition is made to a dwelling of Group R-3 or R-5, smoke alarms shall be installed in accordance with the following: 1. If the cumulative area of all floors of the addition(s) is 25 percent or more of the floor area of the largest floor of the existing dwelling, smoke alarms complying with the building subcode or one- and two-family dwelling subcode, as applicable, shall be installed throughout the addition and the existing dwelling.2. If the cumulative area of all floors of the addition(s) is five percent or more, but less than 25 percent, of the floor area of the largest floor of the existing dwelling, hardwired, interconnected smoke alarms with battery back-up meeting the requirements of NFPA 72, except as otherwise provided in the building or fire protection subcode or one- and two-family dwelling subcode, as applicable, shall be installed and maintained in each story in the dwelling unit, including basements. (Fire)(g) All additions shall comply with the requirements at Chapter 11 of the building subcode for accessibility, where applicable. 1. The addition shall include accessible entrance(s) unless the requirement that 60 percent of the building entrances be accessible has been met in the existing building. (For purposes of calculating the number of accessible entrances required, all entrances in the existing building and planned for the addition shall be included.) i. If the only accessible entrance to the addition is located in the existing building or facility, at least one interior accessible route shall provide access through the existing building to all rooms, elements, or spaces in the addition.2. If there are no toilet rooms in the addition, accessible toilet facilities that comply with Chapter 11 of the building subcode shall be provided in the existing building. (Building)(h) Structural loads: The following concern structural loads imposed by additions: 1. An addition shall not impose new loads which would cause the existing building to be subject to stresses exceeding those permitted by the building subcode.2. An addition shall not increase the forces in any structural element of the existing building or structure by more than five percent, unless the increased forces on the element are still in compliance with the building subcode for new structures.3. An addition shall not decrease the strength of any structural element of the existing building or structure unless the element still exceeds the strength required by the building subcode for new structures. (Building)(i) When work is performed in a Class 1 structure or when work is performed on a smoke control system, a list of all materials and work requiring special inspections, and a list of agencies, qualified licensed professionals or firms intended to be retained for conducting those inspections in accordance with the requirements of the building subcode shall be submitted as part of the permit application.N.J. Admin. Code § 5:23-6.32
Amended by 49 N.J.R. 1020(a), effective 5/1/2017Amended by 55 N.J.R. 349(a), effective 3/6/2023