ADOPTS WITH AMENDMENTS:

International Existing Building Code 2015 (IEBC 2015)

Heads up: There are no amended sections in this chapter.

Chapter 7 Change of Occupancy

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This section has been amended at the state or city level.

Section 701 General

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701.1 Scope

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The provisions of this chapter shall apply where a change of occupancy occurs, except as modified by Section 906 for historic buildings. Compliance with the current VCC for the change of occupancy shall only be required as prescribed in this chapter. Compliance shall be only as necessary to meet the specific provisions of the applicable International Codes and is not intended to require the entire building be brought into compliance.

Exception: Compliance with the provisions of Chapter 14 shall be permitted in lieu of complying with this chapter for a change of occupancy.

701.2 Work Undertaken in Connection With a Change of Occupancy

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This section has been amended at the state or city level.
Any repairs, alterations, or additions undertaken in connection with a change of occupancy shall conform to the applicable requirements for the work as classified in this code and as modified by this chapter.

Section 702 Special Use and Occupancy

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702.1 Compliance With the Building Code

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy to one of the special use or occupancy categories described in Chapter 4 of the VCC, the building shall comply with all of the requirements of Chapter 4 of the VCC applicable to the special use or occupancy.

702.2 Incidental Uses

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This section has been amended at the state or city level.
Where a portion of a building undergoes a change of occupancy to one of the incidental uses listed in Table 509 of the VCC, the incidental use shall comply with the applicable requirements of Section 509 of the VCC.

Section 703 Building Elements and Materials

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703.1 Interior Finish

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This section has been amended at the state or city level.
In areas of the building undergoing a change of occupancy classification, the interior finish of walls and ceilings shall comply with the requirements of the VCC for the new occupancy classification.

703.2 Enclosure of Vertical Openings

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This section has been amended at the state or city level.
When a change of occupancy classification is made to a higher hazard category as shown in Table 705.2, protection of existing vertical openings shall be in accordance with Sections 703.2.1 through 703.2.3.

703.2.1 Stairways

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This section has been amended at the state or city level.
Interior stairways shall be protected as required by Section 705.1.

703.2.2 Other Vertical Openings

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This section has been amended at the state or city level.
Interior vertical openings, other than stairways, within the area of the change of occupancy shall be protected as required by the VCC.

Exceptions:
  1. Existing 1-hour interior shaft enclosures shall be accepted where a higher rating is required.
  2. Vertical openings, other than stairways, in buildings of other than Group I occupancy and connecting less than six stories shall not be required to be enclosed are permitted if the entire building is provided with an approved automatic sprinkler system.

703.2.3 Shaft Openings

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This section has been amended at the state or city level.
All openings into existing vertical shaft enclosures shall be protected by fire assemblies having a fire protection rating of not less than 1 hour and shall be maintained self-closing or shall be automatic-closing by actuation of a smoke detector. All other openings shall be fire protected in an approved manner. Existing fusible link-type automatic door-closing devices shall be permitted in all shafts except stairways if the fusible link rating does not exceed 135°F (57°C).

Section 704 Fire Protection

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704.1 Fire Protection Systems

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Fire protection systems shall be provided in accordance with Sections 704.2 and 704.3.

704.2 Fire Sprinkler System

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy that requires an automatic fire sprinkler system to be provided based on the new occupancy in accordance with Chapter 9 of the VCC, such system shall be provided throughout the area where the change of occupancy occurs.

704.3 Fire Alarm and Detection System

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy that requires a fire alarm and detection system to be provided based on the new occupancy in accordance with Chapter 9 of the VCC, such system shall be provided throughout the area where the change of occupancy occurs. Existing alarm notification appliances shall be automatically activated throughout the building. Where the building is not equipped with a fire alarm system, alarm notification appliances shall be provided throughout the area where the change of occupancy occurs in accordance with Section 907 of the VCC as required for new construction.

Section 705 Means of Egress

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705.1 General

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Means of egress in buildings undergoing a change of occupancy shall comply with this Section.

705.2 Means of Egress, Hazards

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This section has been amended at the state or city level.
Hazard categories in regard to life safety and means of egress shall be in accordance with Table 705.2.

TABLE 705.2
MEANS OF EGRESS HAZARD CATEGORIES


RELATIVE HAZARD OCCUPANCY CLASSIFICATIONS
1 (Highest Hazard) H
2 I-2, I-3, I-4
3 A, E, I-1, M, R-1, R-2, R-4
4 B, F-1, R-3, S-1, R-5
5 (Lowest Hazard) F-2, S-2, U

705.3 Means of Egress for Change to Higher Hazard Category

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This section has been amended at the state or city level.
When a change of occupancy classification is made to a higher hazard category (lower number) as shown in Table 705.2, the means of egress serving the area of the change of occupancy shall comply with the requirements of Chapter 10 of the VCC.

Exceptions:
  1. Existing interior stairways are permitted to be enclosed in accordance with Section 603.4.1.1 from the highest floor where the change of occupancy classification occurs to, and including, the level of exit discharge and all floors below.
  2. An enclosure shall not be required for openings serving only one adjacent floor and that are not connected with corridors or stairways serving other floors.
  3. Unenclosed existing stairways need not be enclosed in a continuous vertical shaft if each story is separated from other stories by 1-hour fire resistance rated construction or approved wired glass set in steel frames and all exit corridors are sprinklered. The openings between the corridor and the occupant space shall have at least one sprinkler head above the openings on the tenant side. The sprinkler system shall be permitted to be supplied from the domestic water supply systems, provided the system is of adequate pressure, capacity, and sizing for the combined domestic and sprinkler requirements.
  4. Existing corridor walls constructed on both sides of wood lath and plaster in good condition or 1/ 2 -inch-thick (12.7 mm) gypsum wallboard shall be permitted. Such walls shall either terminate at the underside of a ceiling of equivalent construction or extend to the underside of the floor or roof next above.
  5. Existing corridor doorways, transoms and other corridor openings are permitted to comply with the requirements in Sections 603.6.4.1, 603.6.4.2 and 603.6.4.3 regardless of work areas.
  6. Existing dead-end corridors are permitted to comply with the requirements in Section 603.6.5 regardless of work areas.
  7. An existing operable window with clear opening area no less than 4 square feet (0.38 m2) and minimum opening height and width of 22 inches (559 mm) and 20 inches (508 mm), respectively, shall be accepted as an emergency escape and rescue opening.
  8. Regardless of work areas, existing handrails are permitted to comply with the requirements of Section 603.6.8 and existing guards are permitted to comply with the requirements of Section 603.6.10.
  9. Fire escapes in compliance with Section 303.
  10. Existing stairways are not required to be altered to meet current tread depth and riser height requirements.
When a change of occupancy classification is made to an equal or lesser hazard category (higher number) as shown in Table 705.2 or a change of occupancy without a change of classification is made, the means of egress shall be deemed acceptable provided the means of egress serving the area of the change of occupancy meets the egress capacity and occupant load based means of egress provisions in Chapter 10 of the VCC for the new occupancy.

Section 706 Heights and Areas

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This section has been amended at the state or city level.

706.1 General

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This section has been amended at the state or city level.
Heights and areas of buildings and structures undergoing a change of occupancy classification shall comply with this Section.

706.2 Heights and Areas, Hazards

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This section has been amended at the state or city level.
Hazard categories in regard to height and area shall be in accordance with Table 706.2.

TABLE 706.2
HEIGHTS AND AREAS HAZARD CATEGORIES


RELATIVE HAZARD OCCUPANCY CLASSIFICATIONS
1 (Highest Hazard) H
2 A-1, A-2, A-3, A-4, I, R-1, R-2, R-4
3 E, F-1, S-1, M
4 (Lowest Hazard) B, F-2, S-2, A-5, R-3, R-5, U

706.3 Height and Area for Change to Higher Hazard Category

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This section has been amended at the state or city level.
When a change of occupancy classification is made to a higher hazard category as shown in Table 706.2, heights and areas of buildings and structures shall comply with the requirements of Chapter 5 of the VCC for the new occupancy classification.

Exception: For high-rise buildings constructed in compliance with a previously issued permit, the type of construction reduction specified in Section 403.2.1 of the VCC is permitted. This shall include the reduction for columns. The high-rise building is required to be equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 of the VCC.

706.3.1 Fire Wall Alternative

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This section has been amended at the state or city level.
In other than Groups H, F-1 and S-1, fire barriers and horizontal assemblies constructed in accordance with Sections 707 and 711, respectively, of the VCC shall be permitted to be used in lieu of fire walls to subdivide the building into separate buildings for the purpose of complying with the area limitations required for the new occupancy where all of the following conditions are met:
  1. The buildings are protected throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 of the International Building Code.
  2. The maximum allowable area between fire barriers, horizontal assemblies, or any combination thereof shall not exceed the maximum allowable area determined in accordance with Chapter 5 of the VCC without an increase allowed for an automatic sprinkler system in accordance with Section 506 of the VCC.
  3. The fire-resistance rating of the fire barriers and horizontal assemblies shall be not less than that specified for fire walls in Table 706.4 of the VCC.
Exception: Where horizontal assemblies are used to limit the maximum allowable area, the required fire-resistance rating of the horizontal assemblies shall be permitted to be reduced by 1 hour provided the height and number of stories increases allowed for an automatic sprinkler system by Section 504 of the VCC are not used for the buildings.

706.4 Height and Area for Change to Equal or Lesser Hazard Category

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This section has been amended at the state or city level.
When a change of occupancy classification is made to an equal or lesser hazard category as shown in Table 706.2, the height and area of the existing building shall be deemed acceptable.

706.5 Fire Barriers

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This section has been amended at the state or city level.
When a change of occupancy classification is made to a higher hazard category as shown in Table 706.2, fire barriers in separated mixed use buildings shall comply with the fire-resistance requirements of the VCC.

Exception: Where the fire barriers are required to have a 1-hour fire-resistance rating, existing wood lath and plaster in good condition or existing 1/ 2- inch-thick (12.7 mm) gypsum wallboard shall be permitted.

Section 707 Exterior Wall Fire-Resistance Ratings

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707.1 Exterior Wall Fire-Resistance Ratings, Hazards

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This section has been amended at the state or city level.
Hazard categories in regard to fire-resistance ratings of exterior walls shall be in accordance with Table 707.1.

TABLE 707.1
EXPOSURE OF EXTERIOR WALLS HAZARD CATEGORIES


RELATIVE HAZARD OCCUPANCY CLASSIFICATIONS
1 (Highest Hazard) H
2 F-1, M, S-1
3 A, B, E, I, R
4 (Lowest Hazard) F-2, S-2, U

707.2 Exterior Wall Rating for Change of Occupancy Classification to a Higher Hazard Category

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This section has been amended at the state or city level.
When a change of occupancy classification is made to a higher hazard category as shown in Table 707.1, exterior walls shall have fire resistance and exterior opening protectives as required by the VCC.

Exception: A 2-hour fire-resistance rating shall be allowed where the building does not exceed three stories in height and is classified as one of the following groups: A-2 and A-3 with an occupant load of less than 300, B, F, M or S.

707.3 Exterior Wall Rating for Change of Occupancy Classification to an Equal or Lesser Hazard Category

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This section has been amended at the state or city level.
When a change of occupancy classification is made to an equal or lesser hazard category as shown in Table 707.1, existing exterior walls, including openings, shall be accepted.

707.4 Opening Protectives

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This section has been amended at the state or city level.
Openings in exterior walls shall be protected as required by the VCC. Where openings in the exterior walls are required to be protected because of their distance from the lot line, the sum of the area of such openings shall not exceed 50 percent of the total area of the wall in each story.

Exceptions:
  1. Where the VCC permits openings in excess of 50 percent.
  2. Protected openings shall not be required in buildings of Group R occupancy that do not exceed three stories in height and that are located not less than 3 feet (914 mm) from the lot line.
  3. Where exterior opening protectives are required, an automatic sprinkler system throughout may be substituted for opening protection.
  4. Exterior opening protectives are not required when the change of occupancy group is to an equal or lower hazard classification in accordance with Table 707.1.

Section 708 Electrical and Lighting

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708.1 Special Occupancies

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy to one of the following special occupancies as described in NFPA 70, the electrical wiring and equipment of the building that contains the proposed occupancy shall comply with the applicable requirements of NFPA 70:
  1. Hazardous locations.
  2. Commercial garages, repair, and storage.
  3. Aircraft hangars.
  4. Gasoline dispensing and service stations.
  5. Bulk storage plants.
  6. Spray application, dipping, and coating processes.
  7. Health care facilities.
  8. Places of assembly.
  9. Theaters, audience areas of motion picture and television studios, and similar locations.
  10. Motion picture and television studios and similar locations.
  11. Motion picture projectors.
  12. Agricultural buildings.

708.2 Service Upgrade

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This section has been amended at the state or city level.
When a new occupancy is required to have a higher electrical load demand per NFPA 70 and the service cannot accommodate the increased demand, the service shall be upgraded to meet the requirements of NFPA 70 for the new occupancy.

708.3 Number of Electrical Outlets

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy, the number of electrical outlets shall comply with NFPA 70 for the new occupancy.

708.4 Lighting

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This section has been amended at the state or city level.
Lighting shall comply with the requirements of the VCC for the new occupancy.

Section 709 Mechanical and Ventilation

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709.1 Mechanical and Ventilation Requirements

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This section has been amended at the state or city level.
Where a building undergoes a change of occupancy such that the new occupancy is subject to different kitchen exhaust requirements or to increased ventilation requirements in accordance with the International Mechanical Code, the new occupancy shall comply with the respective International Mechanical Code provisions.

Section 710 Plumbing

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This section has been amended at the state or city level.

710.1 Increased Demand

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This section has been amended at the state or city level.
Where a building or portion thereof undergoes a change of occupancy such that the new occupancy is subject to increased or different plumbing fixture requirements or to increased water supply requirements in accordance with the International Plumbing Code, the new occupancy shall comply with the respective International Plumbing Code provisions.

Exception: In other than Group R or I occupancies or child care facilities classified as group E, where the occupant load is increased by 20 percent or less in the area where the change of occupancy occurs, additional plumbing fixtures required based on the increased occupant load in quantities specified in the International Plumbing Code are not required.

710.2 Interceptor Required

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This section has been amended at the state or city level.
If the new occupancy will produce grease or oil-laden wastes, interceptors shall be provided as required in the International Plumbing Code.

710.3 Chemical Wastes

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This section has been amended at the state or city level.
If the new occupancy will produce chemical wastes, the following shall apply:
  1. If the existing piping is not compatible with the chemical waste, the waste shall be neutralized prior to entering the drainage system, or the piping shall be changed to a compatible material.
  2. No chemical waste shall discharge to a public sewer system without the approval of the sewage authority.

Section 711 Structural

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This section has been amended at the state or city level.

711.1 Gravity Loads

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This section has been amended at the state or city level.
Buildings subject to a change of occupancy where such change in the nature of occupancy results in higher uniform or concentrated loads based on Table 1607.1 of the VCC shall comply with the gravity load provisions of the VCC.

Exception: Structural elements whose stress is not increased by more than 5 percent.

711.2 Snow and Wind Loads

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This section has been amended at the state or city level.
Buildings and structures subject to a change of occupancy where such change in the nature of occupancy results in higher wind or snow risk categories based on Table 1604.5 of the VCC shall be analyzed and shall comply with the applicable wind or snow load provisions of the VCC.

Exception: Where the new occupancy with a higher risk category is less than or equal to 10 percent of the total building floor area. The cumulative effect of the area of occupancy changes shall be considered for the purposes of this exception.

711.3 Seismic Loads

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This section has been amended at the state or city level.
Existing buildings with a change of occupancy shall comply with the seismic provisions of Sections 711.3.1 and 711.3.2.

711.3.1 Compliance With VCC-Level Seismic Forces

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This section has been amended at the state or city level.
Where a building is subject to a change of occupancy that results in the building being assigned to a higher risk category based on Table 1604.5 of the VCC, the building shall comply with the requirements for VCC-level seismic forces as specified in Section 305.2.1 for the new risk category.

Exceptions:
  1. Specific detailing provisions required for a new structure are not required to be met where it can be shown that an equivalent level of performance and seismic safety is obtained for the applicable risk category based on the provision for reduced VCC-level seismic forces as specified in Section 305.2.2.
  2. Where the area of the new occupancy with a higher hazard category is less than or equal to 10 percent of the total building floor area and the new occupancy is not classified as Risk Category IV. For the purposes of this exception, buildings occupied by two or more occupancies not included in the same risk category, shall be subject to the provisions of Section 1604.5.1 of the VCC. The cumulative effect of the area of occupancy changes shall be considered for the purposes of this exception.
  3. Unreinforced masonry bearing wall buildings in Risk Category III when assigned to Seismic Design Category A or B shall be allowed to be strengthened to meet the requirements of Appendix Chapter A1 of this code Guidelines for the Seismic Retrofit of Existing Buildings (GSREB).

711.3.2 Access to Risk Category IV

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This section has been amended at the state or city level.
Where a change of occupancy is such that compliance with Section 711.3.1 is required and the building is assigned to Risk Category IV, the operational access to the building shall not be through an adjacent structure, unless that structure conforms to the requirements for Risk Category IV structures. Where operational access is less than 10 feet (3048 mm) from either an interior lot line or from another structure, access protection from potential falling debris shall be provided by the owner of the Risk Category IV structure.

Section 712 Assessibility

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This section has been amended at the state or city level.

712.1 General

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This section has been amended at the state or city level.
Existing buildings that undergo a change of occupancy classification shall comply with Section 402.
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