Mech
Registered User
2009 IBC & 2012 IBC Chapter 11 and Section 3411
Existing 4 story building w/ basement
An enclosed stair is being replaced to be brought into compliance with current code requirements. Accessible means of egress in existing buildings are not required per 3411.6 exception 2. There is no existing or proposed accessible means of egress for the building.
If a 5 ft addition is constructed to house a portion (less than 50%) of the replacement stair, must the stair then be constructed to provide an accessible means of egress? (Additions must comply with the code for new construction - 3403.1.) Site constraints limit an addition, and 5 feet could go a long way to enhance the inside of the building.
3403.1 General. (IBC 2009)
Additions to any building or structure shall comply with the requirements of this code for new construction. Alterations to the existing building or structure shall be made to ensure that the existing building or structure together with the addition are no less conforming with the provisions of this code than the existing building or structure was prior to the addition. An existing building together with its additions shall comply with the height and area provisions of Chapter 5.
3411.6 Alterations. (2012 IBC)
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:
1. The altered element or space is not required to be on an accessible route, unless required by Section 3411.7.
2. Accessible means of egress required by Chapter 10 are not required to be provided in existing facilities.
3. 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.
4. 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.
Thanks
Existing 4 story building w/ basement
An enclosed stair is being replaced to be brought into compliance with current code requirements. Accessible means of egress in existing buildings are not required per 3411.6 exception 2. There is no existing or proposed accessible means of egress for the building.
If a 5 ft addition is constructed to house a portion (less than 50%) of the replacement stair, must the stair then be constructed to provide an accessible means of egress? (Additions must comply with the code for new construction - 3403.1.) Site constraints limit an addition, and 5 feet could go a long way to enhance the inside of the building.
3403.1 General. (IBC 2009)
Additions to any building or structure shall comply with the requirements of this code for new construction. Alterations to the existing building or structure shall be made to ensure that the existing building or structure together with the addition are no less conforming with the provisions of this code than the existing building or structure was prior to the addition. An existing building together with its additions shall comply with the height and area provisions of Chapter 5.
3411.6 Alterations. (2012 IBC)
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:
1. The altered element or space is not required to be on an accessible route, unless required by Section 3411.7.
2. Accessible means of egress required by Chapter 10 are not required to be provided in existing facilities.
3. 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.
4. 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.
Thanks
