Rhode Island Code of Regulations › Title 510 - Building Code Commission › Chapter 00 - N/A › Subchapter 00 - N/A › Part 1 - RISBC-1 Rhode Island Building Code › Section 510-RICR-00-00-1.24 - Chapter 34: Existing Structures

Current through June 14, 2024
Substitute the following for IBC Chapter 34 2018
SECTION 3401 GENERAL
3401.1 Scope.
The provisions of this Chapter shall control the
					 alteration, repair, addition and change of occupancy of existing buildings and
					 structures.
Exception: Existing bleachers, grandstands and folding and
					 telescopic seating shall comply with ICC 300.
3401.2 Maintenance.
Buildings and structures, and parts thereof, shall be
					 maintained in a safe and sanitary condition. Devices or safeguards which are
					 required by this code shall be maintained in conformance with the code edition
					 under which installed. The owner or the owner's designated agent shall be
					 responsible for the maintenance of buildings and structures. To determine
					 compliance with this subsection, the building official shall have the authority
					 to require a building or structure to be re-inspected. The requirements of this
					 Chapter shall not provide the basis for removal or abrogation of fire
					 protection and safety systems and devices in existing structures.
3401.3 Compliance.
Alterations, repairs, additions and changes of occupancy
					 to, or relocation of, existing buildings and structures shall comply with the
					 provisions for alterations, repairs, additions and changes of occupancy or
					 relocation, respectively, in the International Energy Conservation Code,
					 International Fire Code, International Fuel Gas Code, International Mechanical
					 Code, International Plumbing Code, International Property Maintenance Code,
					 International Private Sewage Disposal Code, International Residential Code and
					 NFPA 70. Where provisions of the other codes conflict with provisions of this
					 Chapter, the provisions of this Chapter shall take precedence.
3401.4 Building materials and
				 systems.
Building materials and systems shall comply with the
					 requirements of this section.
3401.4.1
				 Existing materials.
Materials already in use in a building in compliance with
					 requirements or approvals in effect at the time of their erection or
					 installation shall be permitted to remain in use unless determined by the
					 Building Official to be unsafe per section 116.
3401.4.2 New and replacement materials.
Except as otherwise required or permitted by this code,
					 materials permitted by the applicable code for new construction shall be used.
					 Like materials shall be permitted for repairs and alterations, provided no
					 hazard to life, health or property is created. Hazardous materials shall not be
					 used where the code for new construction would not permit their use in
					 buildings of similar occupancy, purpose and location.
3401.4.3 Existing seismic force-resisting
				 systems.
Where the existing seismic force-resisting system is a type
					 that can be designated ordinary, values of R, [OMEGA] 0, and Cd for the
					 existing seismic force-resisting system shall be those specified by this code
					 for an ordinary system unless it is demonstrated that the existing system will
					 provide performance equivalent to that of a detailed, intermediate or special
					 system.
3401.6
				 Alternative compliance.
Work performed in accordance with the International
					 Existing Building Code shall be deemed to comply with the provisions of this
					 Chapter.
3401.5 Dangerous
				 conditions.
The Building Official shall have the authority to require
					 the elimination of conditions deemed dangerous.
IBC SECTION 3402 DEFINITIONS
3402.1 Definitions.
The following terms are defined in Chapter 2:
DANGEROUS.
EXISTING STRUCTURE.
PRIMARY FUNCTION.
SUBSTANTIAL STRUCTURAL DAMAGE.
TECHNICALLY INFEASIBLE.
IBC section 3403 ADDITIONS
3403.1 General.
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.
3403.2 Flood hazard areas.
For buildings and structures in flood hazard areas
					 established in section 1612.3, any addition that constitutes substantial
					 improvement of the existing structure, as defined in section 1612.2, shall
					 comply with the flood design requirements for new construction, and all aspects
					 of the existing structure shall be brought into compliance with the
					 requirements for new construction for flood design. For buildings and
					 structures in flood hazard areas established in section 1612.3, any additions
					 that do not constitute substantial improvement of the existing structure, as
					 defined in section 1612.2, are not required to comply with the flood design
					 requirements for new construction.
3403.3 Existing structural elements carrying
				 gravity load.
Any existing gravity load-carrying structural element for
					 which an addition and its related alterations cause an increase in design
					 gravity load of more than five percent (5%) shall be strengthened,
					 supplemented, replaced or otherwise altered as needed to carry the increased
					 gravity load required by this code for new structures. Any existing gravity
					 load-carrying structural element whose gravity load-carrying capacity is
					 decreased shall be considered an altered element subject to the requirements of
					 section 3404.3. Any existing element that will form part of the lateral load
					 path for any part of the addition shall be considered an existing lateral
					 load-carrying structural element subject to the requirements of section
					 3403.4.
3403.3.1 Design live load.
Where the addition does not result in increased design live
					 load, existing gravity load carrying structural elements shall be permitted to
					 be evaluated and designed for live loads approved prior to the addition. If the
					 approved live load is less than that required by section 1607, the area
					 designed for the nonconforming live load shall be posted with placards of
					 approved design indicating the approved live load. Where the addition does
					 result in increased design live load, the live load required by section 1607
					 shall be used.
3403.4 Existing structural elements carrying
				 lateral load.
Where the addition is structurally independent of the
					 existing structure, existing lateral load-carrying structural elements shall be
					 permitted to remain unaltered. Where the addition is not structurally
					 independent of the existing structure, the existing structure and its addition
					 acting together as a single structure shall be shown to meet the requirements
					 of sections 1609 and 1613.
Exception:
Any existing lateral load-carrying structural element whose
					 demand-capacity ratio with the addition considered is no more than ten percent
					 (10%) greater than its demand-capacity ratio with the addition ignored shall be
					 permitted to remain unaltered. For purposes of calculating demand-capacity
					 ratios, the demand shall consider applicable load combinations with design
					 lateral loads or forces in accordance with sections 1609 and 1613. For purposes
					 of this exception, comparisons of demand-capacity ratios and calculation of
					 design lateral loads, forces and capacities shall account for the cumulative
					 effects of additions and alterations since original construction.
3403.5 Smoke alarms in existing
				 portions of a building.
Where an addition is made to a building or structure of a
					 Group R or I-1 occupancy, the existing building shall be provided with smoke
					 alarms in accordance with section 1103.8 of the International Fire Code.
IBC section 3404 ALTERATIONS
3404.1 General.
Except as provided by section 3401.4 or this section,
					 alterations to any building or structure shall comply with the requirements of
					 the code for new construction. Alterations shall be such that the existing
					 building or structure is no less complying with the provisions of this code
					 than the existing building or structure was prior to the alteration.
Exceptions:
1. An
				 existing stairway shall not be required to comply with the requirements of
				 section 1009 where the existing space and construction does not allow a
				 reduction in pitch or slope.
2.
				 Handrails otherwise required to comply with section 1011.11 shall not be
				 required to comply with the requirements of section 1014.6 regarding full
				 extension of the handrails where such extensions would be hazardous due to plan
				 configuration.
3404.2
				 Flood hazard areas.
For buildings and structures in flood hazard areas
					 established in section 1612.3, any alteration that constitutes substantial
					 improvement of the existing structure, as defined in section 1612.2, shall
					 comply with the flood design requirements for new construction, and all aspects
					 of the existing structure shall be brought into compliance with the
					 requirements for new construction for flood design. For buildings and
					 structures in flood hazard areas established in section 1612.3, any alterations
					 that do not constitute substantial improvement of the existing structure, as
					 defined in section 1612.2, are not required to comply with the flood design
					 requirements for new construction.
3404.3 Existing structural elements carrying
				 gravity load.
Any existing gravity load-carrying structural element for
					 which an alteration causes an increase in design gravity load of more than five
					 percent (5%) shall be strengthened, supplemented, replaced or otherwise altered
					 as needed to carry the increased gravity load required by this code for new
					 structures. Any existing gravity load-carrying structural element whose gravity
					 load-carrying capacity is decreased as part of the alteration shall be shown to
					 have the capacity to resist the applicable design gravity loads required by
					 this code for new structures.
3404.3.1
				 Design live load.
Where the alteration does not result in increased design
					 live load, existing gravity load carrying structural elements shall be
					 permitted to be evaluated and designed for live loads approved prior to the
					 alteration. If the approved live load is less than that required by section
					 1607, the area designed for the nonconforming live load shall be posted with
					 placards of approved design indicating the approved live load. Where the
					 alteration does result in increased design live load, the live load required by
					 section 1607 shall be used.
3404.4 Existing structural elements carrying
				 lateral load.
Except as permitted by section 3404.5, where the alteration
					 increases design lateral loads in accordance with section 1609 or 1613, or
					 where the alteration results in a structural irregularity as defined in ASCE 7,
					 or where the alteration decreases the capacity of any existing lateral
					 load-carrying structural element, the structure of the altered building or
					 structure shall be shown to meet the requirements of sections 1609 and
					 1613.
Exception:
Any existing lateral load-carrying structural element whose
					 demand-capacity ratio with the alteration considered is no more than ten
					 percent (10%) greater than its demand-capacity ratio with the alteration
					 ignored shall be permitted to remain unaltered. For purposes of calculating
					 demand-capacity ratios, the demand shall consider applicable load combinations
					 with design lateral loads or forces per sections 1609 and 1613. For purposes of
					 this exception, comparisons of demand-capacity ratios and calculation of design
					 lateral loads, forces, and capacities shall account for the cumulative effects
					 of additions and alterations since original construction.
3404.5 Voluntary seismic improvements.
Alterations to existing structural elements or additions of
					 new structural elements that are not otherwise required by this chapter and are
					 initiated for the purpose of improving the performance of the seismic
					 force-resisting system of an existing structure or the performance of seismic
					 bracing or anchorage of existing nonstructural elements shall be permitted,
					 provided that an engineering analysis is submitted demonstrating the
					 following:
1. The altered structure
				 and the altered nonstructural elements are no less conforming with the
				 provisions of this code with respect to earthquake design than they were prior
				 to the alteration.
2. New
				 structural elements are detailed as required for new construction.
3. New or relocated nonstructural elements
				 are detailed and connected to existing or new structural elements as required
				 for new construction.
4. The
				 alterations do not create a structural irregularity as defined in ASCE 7 or
				 make an existing structural irregularity more severe.
3404.6 Smoke alarms.
Individual sleeping units and individual dwelling units in
					 Group R and I-1 occupancies shall be provided with smoke alarms in accordance
					 with section 1103.8 of the International Fire Code.
IBC section 3405 REPAIRS
3405.1 General.
Buildings and structures, and parts thereof, shall be
					 repaired in compliance with sections 3405 and 3401.2. Work on non-damaged
					 components that is necessary for the required repair of damaged components
					 shall be considered part of the repair and shall not be subject to the
					 requirements for alterations in this chapter. Routine maintenance required by
					 section 3401.2, ordinary repairs exempt from permit in accordance with section
					 105.2, and abatement of wear due to normal service conditions shall not be
					 subject to the requirements for repairs in this section.
3405.2 Substantial structural damage to
				 vertical elements of the lateral force-resisting system.
A building that has sustained substantial structural damage
					 to the vertical elements of its lateral force-resisting system shall be
					 evaluated and repaired in accordance with the applicable provisions of sections
					 3405.2.1 through 3405.2.3.
Exceptions:
1.
				 Buildings assigned to Seismic Design Category A, B, or C whose substantial
				 structural damage was not caused by earthquake need not be evaluated or
				 rehabilitated for load combinations that include earthquake effects.
2. One (1) and two (2) family dwellings need
				 not be evaluated or rehabilitated for load combinations that include earthquake
				 effects.
3405.2.1 Evaluation.
The building shall be evaluated by a registered design
					 professional, and the evaluation findings shall be submitted to the building
					 official. The evaluation shall establish whether the damaged building, if
					 repaired to its pre-damage state, would comply with the provisions of this code
					 for wind and earthquake loads. Wind loads for this evaluation shall be those
					 prescribed in section 1609. Earthquake loads for this evaluation, if required,
					 shall be permitted to be seventy-five percent (75%) of those prescribed in
					 section 1613.
3405.2.2
				 Extent of repair for compliant buildings.
If the evaluation establishes compliance of the pre-damage
					 building in accordance with section 3405.2.1, then repairs shall be permitted
					 that restore the building to its pre-damage state, based on material properties
					 and design strengths applicable at the time of original construction.
3405.2.3 Extent of repair for
				 noncompliant buildings.
If the evaluation does not establish compliance of the
					 pre-damaged building in accordance with section 3404.2.1, then the building
					 shall be rehabilitated to comply with applicable provisions of this code for
					 load combinations that include wind or seismic loads. The wind loads for the
					 repair shall be as required by the building code in effect at the time of
					 original construction, unless the damage was caused by wind, in which case the
					 wind loads shall be as required by this code. Earthquake loads for this
					 rehabilitation design shall be those required for the design of the pre-damage
					 building, but not less than seventy-five percent (75%) of those prescribed in
					 section 1613. New structural members and connections required by this
					 rehabilitation design shall comply with the detailing provisions of this code
					 for new buildings of similar structure, purpose and location.
3405.3 Substantial structural
				 damage to gravity load-carrying components.
Gravity load-carrying components that have sustained
					 substantial structural damage shall be rehabilitated to comply with the
					 applicable provisions of this code for dead and live loads. Snow loads shall be
					 considered if the substantial structural damage was caused by or related to
					 snow load effects. Existing gravity load-carrying structural elements shall be
					 permitted to be designed for live loads approved prior to the damage.
					 Nondamaged gravity load-carrying components that receive dead, live or snow
					 loads from rehabilitated components shall also be rehabilitated or shown to
					 have the capacity to carry the design loads of the rehabilitation design. New
					 structural members and connections required by this rehabilitation design shall
					 comply with the detailing provisions of this code for new buildings of similar
					 structure, purpose and location.
3405.3.1 Lateral force-resisting elements.
Regardless of the level of damage to vertical elements of
					 the lateral force-resisting system, if substantial structural damage to gravity
					 load-carrying components was caused primarily by wind or earthquake effects,
					 then the building shall be evaluated in accordance with section 3405.2.1 and,
					 if noncompliant, rehabilitated in accordance with section 3405.2.3.
Exceptions:
1. One
				 (1) and two (2) family dwellings need not be evaluated or rehabilitated for
				 load combinations that include earthquake effects.
2. Buildings assigned to Seismic Design
				 Category A, B, or C whose substantial structural damage was not caused by
				 earthquake need not be evaluated or rehabilitated for load combinations that
				 include earthquake effects.
3405.4 Less than substantial structural
				 damage.
For damage less than substantial structural damage, repairs
					 shall be allowed that restore the building to its pre-damage state, based on
					 material properties and design strengths applicable at the time of original
					 construction. New structural members and connections used for this repair shall
					 comply with the detailing provisions of this code for new buildings of similar
					 structure, purpose and location.
3405.4.1 Repairs for less than substantial
				 damage due to snow load effects.
Roof framing components that have sustained less than
					 substantial structural damage caused by or related to snow load effects shall
					 be rehabilitated to comply with the applicable provisions for dead and snow
					 loads in Chapter 16. Undamaged roof framing components that receive dead or
					 snow loads from rehabilitated components shall also be rehabilitated to comply
					 with the design loads of the rehabilitated design.
3405.5 Flood hazard areas.
For buildings and structures in flood hazard areas
					 established in section 1612.3, any repair that constitutes substantial
					 improvement of the existing structure, as defined in section 1612.2, shall
					 comply with the flood design requirements for new construction, and all aspects
					 of the existing structure shall be brought into compliance with the
					 requirements for new construction for flood design. For buildings and
					 structures in flood hazard areas established in section 1612.3, any repairs
					 that do not constitute substantial improvement or repair of substantial damage
					 of the existing structure, as defined in section 1612.2, are not required to
					 comply with the flood design requirements for new construction.
IBC section 3406 Fire Escapes
3406.1 Where permitted.
Fire escapes shall be permitted only as provided for in
					 sections 3406.1.1 through 3406.1.4.
3406.1.1 New buildings.
Fire escapes shall not constitute any part of the required
					 means of egress in new buildings.
3406.1.2 Existing fire escapes.
Existing fire escapes shall be continued to be accepted as
					 a component in the means of egress in existing buildings only.
3406.1.3 New fire escapes.
New fire escapes for existing buildings shall be permitted
					 only where exterior stairs cannot be utilized due to lot lines limiting stair
					 size or due to the sidewalks, alleys or roads at grade level. New fire escapes
					 shall not incorporate ladders or access by windows.
3406.1.4 Limitations.
Fire escapes shall comply with this section and shall not
					 constitute more than fifty percent (50%) of the required number of exits nor
					 more than fifty percent (50%) of the required exit capacity.
3406.2 Location.
Where located on the front of the building and where
					 projecting beyond the building line, the lowest landing shall not be less than
					 seven feet (7') (2134 mm) or more than twelve feet (12') (3658 mm) above grade
					 and
shall be equipped with a counterbalanced stairway to the
					 street. In alleyways and thoroughfares less than thirty feet (30') (9144 mm)
					 wide, the clearance under the lowest landing shall not be less than twelve feet
					 (12') (3658 mm).
3406.3
				 Construction.
The fire escape shall be designed to support a live load of
					 one hundred (100) pounds per square foot (4788 Pascals) and shall be
					 constructed of steel or other approved noncombustible materials. Fire escapes
					 constructed of wood not less than nominal two inches (2") (51 mm) thick are
					 permitted on buildings of Type V construction. Walkways and railings located
					 over or supported by combustible roofs in buildings of Type III and IV
					 construction are permitted to be of wood not less than nominal two inches (2")
					 (51 mm) thick.
3406.4
				 Dimensions.
Stairs shall be at least twenty-two inches (22") (559 mm)
					 wide with risers not more than, and treads not less than, eight inches (8")
					 (203 mm) and landings at the foot of stairs not less than forty inches (40")
					 (1016 mm) wide by thirty-six inches (36") (914 mm) long, located not more than
					 eight inches (8") (203 mm) below the door.
3406.5 Opening protectives.
Doors and windows along the fire escape shall be protected
					 with three quarters of one (3/4) hour opening protectives.
IBC section 3407 Glass Replacement
3407.1 Conformance.
The installation or replacement of glass shall be as
					 required for new installations.
IBC section 3408 Change of Occupancy
3408.1 Conformance.
No change shall be made in the use or occupancy of any
					 building that would place the building in a different division of the same
					 group of occupancies or in a different group of occupancies, unless such
					 building is made to comply with the requirements of this code for such division
					 or group of occupancies. Subject to the approval of the building official, the
					 use or occupancy of existing buildings shall be permitted to be changed and the
					 building is allowed to be occupied for purposes in other groups without
					 conforming to all the requirements of this code for those groups, provided the
					 new or proposed use is less hazardous, based on life and fire risk, than the
					 existing use.
3408.2
				 Certificate of occupancy.
A certificate of occupancy shall be issued where it has
					 been determined that the requirements for the new occupancy classification have
					 been met.
3408.3 Stairways.
An existing stairway shall not be required to comply with
					 the requirements of section 1011 where the existing space and construction does
					 not allow a reduction in pitch or slope.
3408.4 Seismic.
When a change of occupancy results in a structure being
					 reclassified to a higher risk category, the structure shall conform to the
					 seismic requirements for a new structure of the higher risk category.
Exceptions:
1.
				 Specific seismic detailing requirements of section 1613 for a new structure
				 shall not be required to be met where the seismic performance is shown to be
				 equivalent to that of a new structure. A demonstration of equivalence shall
				 consider the regularity, over strength, redundancy and ductility of the
				 structure.
2. When a change of use
				 results in a structure being reclassified from Risk Category I or II to Risk
				 Category III and the structure is located where the seismic coefficient, SDS,
				 is less than thirty-three one hundredths (0.33), compliance with the seismic
				 requirements of section 1613 are not required.
IBC section 3409 Historic Buildings
3409 Historic Buildings:
Delete IBC section 3407.1 3409.1 Historic Buildings and
					 substitute the following:
3409.1 Approval:
The provisions of this code relating to the construction,
					 repair, alteration, enlargement, restoration and moving of buildings or
					 structures shall not be mandatory for existing buildings or structures
					 identified and classified by the state or local government authority as
					 historic buildings, subject to the approval of the Board of Appeals, when such
					 buildings are judged by the code official to be safe and in the interest of
					 public health, safety and welfare regarding any proposed construction,
					 alteration, repair, enlargement and relocation. All such approvals shall be
					 based on the applicant's complete submission of professional architectural and
					 engineering plans and specifications bearing the professional seal of the
					 designer.
3409.2 Flood
				 hazard areas.
Within flood hazard areas established in accordance with
					 section 1612.3, where the work proposed constitutes substantial improvement as
					 defined in section 1612.2, the building shall be brought into compliance with
					 section 1612.
Exception: Historic buildings that are:
1. Listed or preliminarily determined to be
				 eligible for listing in the National Register of Historic Places;
2. Determined by the Secretary of the U.S.
				 Department of Interior as contributing to the historical significance of a
				 registered historic district or a district preliminarily determined to qualify
				 as an historic district; or
3.
				 Designated as historic under a State or local historic preservation program
				 that is approved by the Department of Interior.
IBC section 3410 Moved Structure
3410.1 Conformance.
Structures moved into or within the jurisdiction shall
					 comply with the provisions of this code for new structures.
IBC section 3411 Accessibility for Existing
					 Buildings
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 fifty percent (50%) 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:
1. At least one
				 (1) accessible building entrance.
2. At least one (1) accessible route from an
				 accessible building entrance to primary function areas.
3. Signage complying with section
				 1111.
4. Accessible parking, where
				 parking is being provided.
5. At
				 least one (1) accessible passenger loading zone, when loading zones are
				 provided.
6. At least one (1)
				 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:
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 fifty percent (50%) 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:
1. The
				 costs of providing the accessible route are not required to exceed twenty
				 percent (20%) of the costs of the alterations affecting the area of primary
				 function.
2. This provision does
				 not apply to alterations limited solely to windows, hardware, operating
				 controls, electrical outlets and signs.
3. 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.
4. This
				 provision does not apply to alterations undertaken for the primary purpose of
				 increasing the accessibility of a facility.
5. 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 1111 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 1012.6.1 are
					 necessitated by space limitations, the slope of ramps in or providing access to
					 existing facilities shall comply with Table 3411.8.5.
TABLE 3411.8.5
RAMPS
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 (1) 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 twenty (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 (4) 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 fifty percent (50%) 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 (1) 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 fifty-four inches (54") (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 three
					 quarters of one inch (3/4") (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 (1) 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 (1) main entrance shall be accessible.
Exceptions:
1. If
				 a main entrance cannot be made accessible, an accessible nonpublic entrance
				 that is unlocked while the building is occupied shall be provided; or
2. 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 1111 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 (1)
					 accessible family or assisted-use toilet room complying with section 1109.2.1
					 shall be provided.
IBC section 3412 Compliance Alternatives
3412.1 Compliance.
The provisions of this section are intended to maintain or
					 increase the current degree of public safety, health and general welfare in
					 existing buildings while permitting repair, alteration, addition and change of
					 occupancy without requiring full compliance with Chapters 2 through 33, or
					 sections 3401.3, and 3403 through 3409, except where compliance with other
					 provisions of this code is specifically required in this section.
Delete IBC section 3410.2 3412.2 Applicability and
					 substitute the following:
3412.2 Applicability
Existing buildings in which there is work involving
					 additions, alterations or changes of occupancy shall be made to conform to the
					 requirements of this section or the provisions of sections 3403 through 3407.
					 The provisions in sections 3410.2.1 through 3410.2.5 shall apply to existing
					 occupancies that will continue to be, or are proposed to be, in Groups A, B, E,
					 F, M, R, S and U. These provisions shall not apply to buildings with
					 occupancies in Group H or I.
3412.2.1
				 Change in occupancy.
Where an existing building is changed to a new occupancy
					 classification and this section is applicable, the provisions of this section
					 for the new occupancy shall be used to determine compliance with this
					 code.
3412.2.2 Partial
				 change in occupancy.
Where a portion of the building is changed to a new
					 occupancy classification, and that portion is separated from the remainder of
					 the building with fire barriers or horizontal assemblies having a
					 fire-resistance rating as required by Table 508.4 for the separate occupancies,
					 or with approved compliance alternatives, the portion changed shall be made to
					 comply with the provisions of this section. Where a portion of the building is
					 changed to a new occupancy classification, and that portion is not separated
					 from the remainder of the building with fire barriers or horizontal assemblies
					 having a fire-resistance rating as required by Table 508.4 for the separate
					 occupancies, or with approved compliance alternatives, the provisions of this
					 section which apply to each occupancy shall apply to the entire building. Where
					 there are conflicting provisions, those requirements which secure the greater
					 public safety shall apply to the entire building or structure.
3412.2.3 Additions.
Additions to existing buildings shall comply with the
					 requirements of this code for new construction. The combined height and area of
					 the existing building and the new addition shall not exceed the height and area
					 allowed by Chapter 5. Where a fire wall that complies with section 706 is
					 provided between the addition and the existing building, the addition shall be
					 considered a separate building.
3412.2.4 Alterations and repairs.
An existing building or portion thereof, which does not
					 comply with the requirements of this code for new construction, shall not be
					 altered or repaired in such a manner that results in the building being less
					 safe or sanitary than such building is currently. If, in the alteration or
					 repair, the current level of safety or sanitation is to be reduced, the portion
					 altered or repaired shall conform to the requirements of Chapters 2 through 12
					 and Chapters 14 through 33.
3412.2.4.1
				 Flood hazard areas.
For existing buildings located in flood hazard areas
					 established in section 1612.3, if the alterations and repairs constitute
					 substantial improvement of the existing building, the existing building shall
					 be brought into compliance with the requirements for new construction for flood
					 design.
3412.2.5
				 Accessibility requirements.
All portions of the buildings proposed for change of
					 occupancy shall conform to the accessibility provisions of section 3411.
3412.3 Acceptance.
For repairs, alterations, additions and changes of
					 occupancy to existing buildings that are evaluated in accordance with this
					 section, compliance with this section shall be accepted by the building
					 official.
3412.3.1 Hazards.
Where the building official determines that an unsafe
					 condition exists, as provided for in section 116, such unsafe condition shall
					 be abated in accordance with section 116.
3412.3.2 Compliance with other codes.
Buildings that are evaluated in accordance with this
					 section shall comply with the International Fire Code and the International
					 Property Maintenance Code.
3412.4 Investigation and evaluation.
For proposed work covered by this section, the building
					 owner shall cause the existing building to be investigated and evaluated in
					 accordance with the provisions of this section.
3412.4.1 Structural analysis.
The owner shall have a structural analysis of the existing
					 building made to determine adequacy of structural systems for the proposed
					 alteration, addition or change of occupancy. The analysis shall demonstrate
					 that the building with the work completed is capable of resisting the loads
					 specified in Chapter 16.
3412.4.2 Submittal.
The results of the investigation and evaluation as required
					 in section 3412.4, along with proposed compliance alternatives, shall be
					 submitted to the building official.
3412.4.3 Determination of compliance.
The building official shall determine whether the existing
					 building, with the proposed addition, alteration or change of occupancy,
					 complies with the provisions of this section in accordance with the evaluation
					 process in sections 3412.5 through 3412.9.
3412.5 Evaluation.
The evaluation shall be comprised of three categories: fire
					 safety, means of egress and general safety, as defined in sections 3412.5.1
					 through 3412.5.3.
3412.5.1 Fire
				 safety.
Included within the fire safety category are the structural
					 fire resistance, automatic fire detection, fire alarm, automatic sprinkler
					 system, and fire suppression system features of the facility.
3412.5.2 Means of egress.
Included within the means of egress category are the
					 configuration, characteristics and support features for means of egress in the
					 facility.
3412.5.3 General
				 safety.
Included within the general safety category are the fire
					 safety parameters and the means of egress parameters.
3412.6 Evaluation process.
The evaluation process specified herein shall be followed
					 in its entirety to evaluate existing buildings. Table 3412.7 shall be utilized
					 for tabulating the results of the evaluation. References to other sections of
					 this code indicate that compliance with those sections is required in order to
					 gain credit in the evaluation herein outlined. In applying this section to a
					 building with mixed occupancies, where the separation between the mixed
					 occupancies does not qualify for any category indicated in section 3412.6.16,
					 the score for each occupancy shall be determined and the lower score determined
					 for each section of the evaluation process shall apply to the entire building.
					 Where the separation between mixed occupancies qualifies for any category
					 indicated in section 3412.6.16, the score for each occupancy shall apply to
					 each portion of the building based on the occupancy of the space.
3412.6.1 Building height.
The value for building height shall be the lesser value
					 determined by the formula in section 3412.6.1.1. Chapter 5 shall be used to
					 determine the allowable height of the building, including allowable increases
					 due to automatic sprinklers as provided for in Chapter 5. Subtract the actual
					 building height in feet from the allowable and divide by twelve and one half
					 feet (12-1/2'). Enter the height value and its sign (positive or negative)
					 in Table 3412.7 under Safety Parameter 3412.6.1, Building Height, for fire
					 safety, means of egress and general safety. The maximum score for a building
					 shall be ten (10).
3412.6.1.1 Height
				 formula.
The following formulas shall be used in computing the
					 building height value.
Click here to view
					 image
Click here to view
					 image
Where:
AH = Allowable height in feet from Table 504.3
EBH = Existing building height in feet.
AS = Allowable height in stories from Table 504.4
EBS = Existing building height in stories.
CF = 1 if (AH) - (EBH) is positive.
CF = Construction-type factor shown in Table 3412.6.6(2) if
					 (AH) - (EBH) is negative.
Note:
Where mixed occupancies are separated and individually
					 evaluated as indicated in section 3412.6, the values AH, AS, EBH and EBS shall
					 be based on the height of the occupancy being evaluated.
3412.6.2 Building area.
The value for building area shall be determined by the
					 formula in section 3412.6.2.2. Section 506 and the formula in section
					 3412.6.2.1 shall be used to determine the allowable area of the building. This
					 shall include any allowable increases due to frontage and automatic sprinklers
					 as provided for in section 506. Subtract the actual building area in square
					 feet from the allowable area and divide by one thousand two hundred (1,200)
					 square feet. Enter the area value and its sign (positive or negative) in Table
					 3412.7 under Safety Parameter 3412.6.2, Building Area, for fire safety, means
					 of egress and general safety. In determining the area value, the maximum
					 permitted positive value for area is fifty percent (50%) of the fire safety
					 score as listed in Table 3412.8, Mandatory Safety Scores.
3412.6.2.1 Allowable area formula.
The following formula shall be used in computing allowable
					 area:
Aa = [At + (At If) + (At Is)] (Equation 34-3)
Where:
Aa = Allowable building area per story (square
					 feet).
At = Tabular building area per story in accordance with
					 Table 506.2 (square feet).
Is = Area increase factor due to sprinkler protection as
					 calculated in accordance with section 506.2.
If = Area increase factor due to for frontage as calculated
					 in accordance with section 506.3.
3412.6.2.2 Area formula.
The following formula shall be used in computing the area
					 value. Determine the area value for each occupancy floor area on a
					 floor-by-floor basis. For each occupancy, choose the minimum area value of the
					 set of values obtained for the particular occupancy.
Click here to view
					 image
Where:
i = Value for an individual separated occupancy on a
					 floor.
n = Number of separated occupancies on a floor.
3412.6.3
				 Compartmentation.
Evaluate the compartments created by fire barriers or
					 horizontal assemblies which comply with sections 3412.6.3.1 and 3412.6.3.2 and
					 which are exclusive of the wall elements considered under sections 3412.6.4 and
					 3412.6.5. Conforming compartments shall be figured as the net area and do not
					 include shafts, chases, stairways, walls or columns.
Using Table 3412.6.3, determine the appropriate
					 compartmentation value (CV) and enter that value into Table 3412.7 under Safety
					 Parameter 3412.6.3, Compartmentation, for fire safety, means of egress and
					 general safety.
TABLE 3412.6.3
COMPARTMENTATION
								 VALUES
OCCUPANC Y
CATEGORIESa
a
Compartment size equal to or greater than 15,000
								 square feet
b
Compartment size of 10,000 square
								 feet
c
Compartment size of 7,500 square
								 feet
d
Compartment size of 5,000 square
								 feet
e
Compartment size of 2,500 square feet or
								 less
A-1, A-3
0
6
10
14
18
A-2
0
4
10
14
18
A-4, B, E, S-2
0
5
10
15
20
F, M, R, S-1
0
4
10
16
22
For SI: 1 Square foot = 0.093
								 m2
For areas between categories, the
								 compartmentation value shall be obtained by linear interpolation.
3412.6.3.1
				 Wall construction.
A wall used to create separate compartments shall be a fire
					 barrier conforming to section 707 with a fire-resistance rating of not less
					 than two (2) hours. Where the building is not divided into more than one (1)
					 compartment, the compartment size shall be taken as the total floor area on all
					 floors. Where there is more than one (1) compartment within a story, each
					 compartmented area on such story shall be provided with a horizontal exit
					 conforming to section 1026. The fire door serving as the horizontal exit
					 between compartments shall be so installed, fitted and gasketed that such fire
					 door will provide a substantial barrier to the passage of smoke.
3412.6.3.2 Floor/ceiling
				 construction.
A floor/ceiling assembly used to create compartments shall
					 conform to section 711 and shall have a fire-resistance rating of not less than
					 two (2) hours.
3412.6.4 Tenant and dwelling unit
				 separations.
Evaluate the fire-resistance rating of floors and walls
					 separating tenants, including dwelling units, and not evaluated under sections
					 3412.6.3 and 3412.6.5. Under the categories and occupancies in Table 3412.6.4,
					 determine the appropriate value and enter that value in Table 3412.7 under
					 Safety Parameter 3412.6.4, Tenant and Dwelling Unit Separations, for fire
					 safety, means of egress and general safety.
TABLE 3412.6.4
SEPARATION VALUES
OCCUPANCY
CATEGORIES
a
b
c
d
e
A-1
0
0
0
0
1
A-2
-5
-3
0
1
3
A-3, A-4, B, E, F, M, S-1
-4
-3
0
2
4
R
-4
-2
0
2
4
S-2
-5
-2
0
2
4
3412.6.4.1
				 Categories.
The categories for tenant and dwelling unit separations
					 are:
1. Category a-No fire partitions;
				 incomplete fire partitions; no doors; doors not self-closing or
				 automatic-closing.
2. Category
				 b-Fire partitions or floor assemblies with less than a one (1) hour
				 fire-resistance rating or not constructed in accordance with sections 708 or
				 711.
3. Category c-Fire partitions
				 with a one (1) hour or greater fire-resistance rating constructed in accordance
				 with section 708 and floor assemblies with a one (1) hour but less than two (2)
				 hour fire-resistance rating constructed in accordance with section 711, or with
				 only one (1) tenant within the floor area.
4. Category d-Fire barriers with a one (1)
				 hour but less than two (2) hour fire-resistance rating constructed in
				 accordance with section 707 and floor assemblies with a two (2) hour or greater
				 fire-resistance rating constructed in accordance with section 711.
5. Category e-Fire barriers and floor
				 assemblies with a two (2) hour or greater fire-resistance rating and
				 constructed in accordance with sections 707 and 711, respectively.
3412.6.5 Corridor walls.
Evaluate the fire-resistance rating and degree of
					 completeness of walls which create corridors serving the floor, and constructed
					 in accordance with section 1020. This evaluation shall not include the wall
					 elements considered under sections 3412.6.3 and 3412.6.4. Under the categories
					 and groups in Table 3412.6.5, determine the appropriate value and enter that
					 value into Table 3412.7 under Safety Parameter 3412.6.5, Corridor Walls, for
					 fire safety, means of egress and general safety.
TABLE 3412.6.5
CORRIDOR WALL VALUES
OCCUPANCY
CATEGORIES
aa
ba
ca
da
A-1
-10
-4
0
2
A-2
-30
-12
0
2
A-3, F, M, R, S-1
-7
-3
0
2
A-4, B, E, S-2
-5
-2
0
5
a Corridors not
								 providing at least one-half the travel distance for all occupants on a floor
								 shall be category b.
3412.6.5.1
				 Categories.
The categories for Corridor Walls are:
1. Category a - No fire partitions;
				 incomplete fire partitions; no doors; or doors not self-closing.
2. Category b - Less than one (1) hour
				 fire-resistance rating or not constructed in accordance with section
				 708.4.
3. Category c - One (1) hour
				 to less than two (2) hour fire-resistance rating, with doors conforming to
				 section 716 or without corridors as permitted by section 1020.
4. Category d - Two (2) hour or greater
				 fire-resistance rating, with doors conforming to section 716.
3412.6.6 Vertical
				 openings.
Evaluate the fire-resistance rating of exit enclosures,
					 hoistways, escalator openings, and other shaft enclosures within the building,
					 and openings between two (2) or more floors. Table 3412.6.6(1) contains the
					 appropriate protection values. Multiply that value by the construction type
					 factor found in Table 3412.6.6(2). Enter the vertical opening value and its
					 sign (positive or negative) in Table 3412.7 under Safety Parameter 3412.6.6,
					 Vertical Openings, for fire safety, means of egress, and general safety. If the
					 structure is a one (1) story building or if all the unenclosed vertical
					 openings within the building conform to the requirements of section 708, enter
					 a value of two (2). The maximum positive value for this requirement shall be
					 two (2).
TABLE 3412.6.6(1)
VERTICAL OPENING PROTECTION
								 VALUE
Protection
Value
None (unprotected opening)
-2 times number floors connected
Less than 1 hour
-1 times floors connected
1 to less than 2 hours
1
2 hours or more
2
TABLE 3412.6.6(2)
CONSTRUCTION-TYPE FACTOR
FACTOR
TYPE OF CONSTRUCTION
IA
IB
IIA
IIB
IIIA
IIIB
IV
VA
VB
1.2
1.5
2.2
3.5
2.5
3.5
2.3
3.3
7
3412.6.6.1
				 Vertical opening formula.
The following formula shall be used in computing vertical
					 opening value.
VO = PV * CF (Equation 34-5)
Where:
VO = Vertical opening value.
PV = Protection value [Table 3412.6.6(1)].
CF = Construction type factor [Table 3412.6.6(2)].
3412.6.7 HVAC systems.
Evaluate the ability of the HVAC system to resist the
					 movement of smoke and fire beyond the point of origin. Under the categories in
					 section 3412.6.7.1, determine the appropriate value and enter that value into
					 Table 3412.7 under Safety Parameter 3412.6.7, HVAC Systems, for fire safety,
					 means of egress and general safety.
3412.6.7.1 Categories.
The categories for HVAC systems are:
1. Category a
Plenums not in accordance with section 602 of the
					 International Mechanical Code. - ten (10) points.
2. Category b
Air movement in egress elements not in accordance with
					 section 1020.5 - five (5) points.
3. Category c
Both categories a and b are applicable. - fifteen (15)
					 points.
4. Category d
Compliance of the HVAC system with section 1020.5 and
					 section 602 of the International Mechanical Code. Zero (0) points.
5. Category e
Systems serving one story; or a central boiler/chiller
					 system without ductwork connecting two (2) or more stories. Five (5)
					 points.
3412.6.8 Automatic fire detection.
Evaluate the smoke detection capability based on the
					 location and operation of automatic fire detectors in accordance with section
					 907 and the International Mechanical Code. Under the categories and occupancies
					 in Table 3412.6.8, determine the appropriate value and enter that value into
					 Table 3412.7 under Safety Parameter 3412.6.8, Automatic Fire Detection, for
					 fire safety, means of egress and general safety.
TABLE 3412.6.8
AUTOMATIC FIRE DETECTION
								 VALUES
OCCUPANCY
CATEGORIES
a
b
c
d
e
A-1, A-3, F, M, R, S-1
-10
-5
0
2
6
A-2
-25
-5
0
5
9
A-4, B, E, S-2
-4
-2
0
4
8
3412.6.8.1
				 Categories.
The categories for automatic fire detection are:
1. Category a
None.
2.
				 Category b
Existing smoke detectors in HVAC systems and maintained in
					 accordance with the International Fire Code.
3. Category c
Smoke detectors in HVAC systems. The detectors are
					 installed in accordance with the requirements for new buildings in the
					 International Mechanical Code.
4. Category d
Smoke detectors throughout all floor areas other than
					 individual sleeping units, tenant spaces and dwelling units.
5. Category e
Smoke detectors installed throughout the floor area.
3412.6.9 Fire
				 alarm systems.
Evaluate the capability of the fire alarm system in
					 accordance with section 907. Under the categories and occupancies in Table
					 3412.6.9, determine the appropriate value and enter that value into Table
					 3412.7 under Safety Parameter 3412.6.9, Fire Alarm Systems, for fire safety,
					 means of egress and general safety.
TABLE 3412.6.9
FIRE ALARM SYSTEM
								 VALUES
OCCUPANCY
CATEGORIES
a
ba
c
D
A-1, A-2, A-3, A-4, B, E, R
-10
-5
0
5
F, M, S
0
5
10
15
For buildings equipped throughout with an
								 automatic sprinkler system, add 2 points for activation by a sprinkler
								 waterflow device.
3412.6.9.1
				 Categories.
The categories for fire alarm systems are:
1. Category a
None.
2.
				 Category b
Fire alarm system with manual fire alarm boxes in
					 accordance with section 907.4 and alarm notification appliances in accordance
					 with section 907.5.2.
3.
				 Category c
Fire alarm system in accordance with section 907.
4. Category d
Category c plus a required emergency voice/alarm
					 communications system and a fire command center that conforms to section
					 403.4.6 and contains the emergency voice/alarm communications system controls,
					 fire department communication system controls and any other controls specified
					 in section 911 where those systems are provided.
3412.6.10 Smoke control.
Evaluate the ability of a natural or mechanical venting,
					 exhaust or pressurization system to control the movement of smoke from a fire.
					 Under the categories and occupancies in Table 3412.6.10, determine the
					 appropriate value and enter that value into Table 3412.7 under Safety Parameter
					 3412.6.10, Smoke Control, for means of egress and general safety.
TABLE 3412.6.10
SMOKE CONTROL VALUES
OCCUPANCY
CATEGORIES
a
b
c
d
e
f
A-1, A-2, A-3
0
1
2
3
6
6
A-4, E
0
0
0
1
3
5
B, M, R
0
2a
3a
3a
3a
4a
F, S
0
2a
2a
3a
3a
3a
a This value shall be
								 0 if compliance with Category d or e in Section 3412.6.8.1 has not been
								 obtained.
3412.6.10.1
				 Categories.
The categories for smoke control are:
1. Category a
None.
2.
				 Category b
The building is equipped throughout with an automatic
					 sprinkler system. Openings are provided in exterior walls at the rate of twenty
					 (20) square feet (1.86 m2) per fifty (50) linear feet (15,240 mm) of exterior
					 wall in each story and distributed around the building perimeter at intervals
					 not exceeding fifty (50) feet (15,240 mm). Such openings shall be readily
					 openable from the inside without a key or separate tool and shall be provided
					 with ready access thereto. In lieu of operable openings, clearly and
					 permanently marked tempered glass panels shall be used.
3. Category c
One (1) enclosed exit stairway, with ready access thereto,
					 from each occupied floor of the building. The stairway has operable exterior
					 windows and the building has openings in accordance with Category b.
4. Category d
One (1) smokeproof enclosure and the building has openings
					 in accordance with Category b.
5. Category e
The building is equipped throughout with an automatic
					 sprinkler system. Each floor area is provided with a mechanical air-handling
					 system designed to accomplish smoke containment. Return and exhaust air shall
					 be moved directly to the outside without recirculation to other floor areas of
					 the building under fire conditions.
The system shall exhaust not less than six (6) air changes
					 per hour from the floor area. Supply air by mechanical means to the floor area
					 is not required.
Containment of smoke shall be considered as confining smoke
					 to the floor area involved without migration to other floor areas. Any other
					 tested and approved design which will adequately accomplish smoke containment
					 is permitted.
6. Category f
Each stairway shall be one of the following: a smokeproof
					 enclosure in accordance with section 1023.11; pressurized in accordance with
					 section 909.20.5 or shall have operable exterior windows
3412.6.11 Means of
				 egress capacity and number.
Evaluate the means of egress capacity and the number of
					 exits available to the building occupants. In applying this section, the means
					 of egress are required to conform to the following sections of this code:
					 1003.7, 1004, 1005, 1006, 1007, 1016.2, 1025.1, 1028.2, 1028.5 1029.2 1029.3
					 1029.4 and 1030. The number of exits credited is the number that is available
					 to each occupant of the area being evaluated. Existing fire escapes shall be
					 accepted as a component in the means of egress when conforming to section 3406.
					 Under the categories and occupancies in Table 3412.6.11, determine the
					 appropriate value and enter that value into Table 3412.7 under Safety Parameter
					 3412.6.11, Means of Egress Capacity, for means of egress and general
					 safety.
TABLE 3412.6.11
MEANS OF EGRESS VALUES
OCCUPANCY
CATEGORIES
a
b
c
d
e
A-1, A-2, A-3, A-4, E
-10
0
2
8
10
M
-3
0
1
2
4
B, F, S
-1
0
0
0
0
R
-3
0
0
0
0
a The values indicated
								 are for buildings six stories or less in height. For buildings over six stories
								 above grade plane, add an additional -10 points.
3412.6.11.1
				 Categories.
The categories for Means of Egress Capacity and number of
					 exits are:
1. Category a
Compliance with the minimum required means of egress
					 capacity or number of exits is achieved through the use of a fire escape in
					 accordance with section 3406.
2. Category b
Capacity of the means of egress complies with section 1004
					 and the number of exits complies with the minimum number required by section
					 1006.
3. Category c
Capacity of the means of egress is equal to or exceeds one
					 hundred twenty-five percent (125%) of the required means of egress capacity,
					 the means of egress complies with the minimum required width dimensions
					 specified in the code and the number of exits complies with the minimum number
					 required by section 1006.
4.
				 Category d
The number of exits provided exceeds the number of exits
					 required by section 1006. Exits shall be located a distance apart from each
					 other equal to not less than that specified in section 1007.1.
5. Category e
The area being evaluated meets both Categories c and
					 d.
3412.6.12 Dead ends.
In spaces required to be served by more than one (1) means
					 of egress, evaluate the length of the exit access travel path in which the
					 building occupants are confined to a single path of travel. Under the
					 categories and occupancies in Table 3412.6.12, determine the appropriate value
					 and enter that value into Table 3412.7 under Safety Parameter 3412.6.12, Dead
					 Ends, for means of egress and general safety.
TABLE 3412.6.12
DEAD-END VALUES
OCCUPANCY
CATEGORIESa
a
b
c
A-1, A-3, A-4, B, E, F, M, R, S
-2
0
2
A-2, E
-2
0
2
a For dead-end
								 distances between categories, the dead-end value shall be obtained by linear
								 interpolation.
3412.6.12.1
				 Categories.
The categories for dead ends are:
1. Category a
Dead end of thirty-five feet (35') (10,670 mm) in
					 non-sprinklered buildings or seventy feet (70') (21,340 mm) in sprinklered
					 buildings.
2. Category b
Dead end of twenty feet (20') (6,096 mm); or fifty feet
					 (50') (15,240 mm) in Group B in accordance with section 1020.4, exception
					 2.
3. Category c
No dead ends; or ratio of length to width (l/w) is less
					 than two and one half to one (2.5:1).
3412.6.13 Maximum exit access travel
				 distance.
Evaluate the length of exit access travel to an approved
					 exit. Determine the appropriate points in accordance with the following
					 equation and enter that value into Table 3412.7 under Safety Parameter
					 3412.6.13, Maximum Exit Access
Travel Distance, for means of egress and general safety.
					 The maximum allowable exit access travel distance shall be determined in
					 accordance with section 1017.1.
Click here to view
					 image
3412.6.14
				 Elevator control.
Evaluate the passenger elevator equipment and controls that
					 are available to the fire department to reach all occupied floors. Emergency
					 recall and in-car operation of elevator recall controls shall be provided in
					 accordance with the International Fire Code. Under the categories and
					 occupancies in Table 3412.6.14, determine the appropriate value and enter that
					 value into
Table 3412.7 under Safety Parameter 3412.6.14, Elevator
					 Control, for fire safety, means of egress and general safety. The values shall
					 be zero (0) for a single-story building.
TABLE 3412.6.14
ELEVATOR CONTROL
								 VALUES
ELEVATOR TRAVEL
CATEGORIES
a
b
c
d
Less than 25 feet of travel above or below the
								 primary level of elevator access for emergency fire-fighting or rescue
								 personnel
-2
0
0
+2
Travel of 25 feet or more above or below the
								 primary level of elevator access for emergency fire-fighting or rescue
								 personnel
-4
NP
0
+4
For SI: 1 foot = 304.8 mm.
NP = Not Permitted
3412.6.14.1
				 Categories.
The categories for elevator controls are:
1. Category a
No elevator.
2. Category b
Any elevator without Phase I emergency recall operation and
					 Phase II emergency in-car operation.
3. Category c
All elevators with Phase I emergency recall operation and
					 Phase II emergency in-car operation as required by the International Fire
					 Code.
4. Category d
All meet Category c; or Category b where permitted to be
					 without Phase I emergency recall operation and Phase II emergency in-car
					 operation; and at least one (1) elevator that complies with new construction
					 requirements serves all occupied floors.
3412.6.15 Means of egress emergency lighting.
Evaluate the presence of and reliability of means of egress
					 emergency lighting. Under the categories and occupancies in Table 3412.6.15,
					 determine the appropriate value and enter that value into Table 3412.7 under
					 Safety Parameter 3412.6.15, Means of Egress Emergency Lighting, for means of
					 egress and general safety.
TABLE 3412.6.15
MEANS OF EGRESS EMERGENCY LIGHTING
								 VALUES
NUMBER OF EXITS REQUIRED BY
								 SECTION 1015
CATEGORIES
a
b
C
Two or more exits
NP
0
4
Minimum of one exit
0
1
1
3412.6.15.1
				 Categories.
The categories for means of egress emergency lighting
					 are:
1. Category a
Means of egress lighting and exit signs not provided with
					 emergency power in accordance with Chapter 27.
2. Category b
Means of egress lighting and exit signs provided with
					 emergency power in accordance with Chapter 27.
3. Category c
Emergency power provided to means of egress lighting and
					 exit signs which provides protection in the event of power failure to the site
					 or building.
3412.6.16 Mixed occupancies.
Where a building has two (2) or more occupancies that are
					 not in the same occupancy classification, the separation between the mixed
					 occupancies shall be evaluated in accordance with this section. Where there is
					 no separation between the mixed occupancies or the separation between mixed
					 occupancies does not qualify for any of the categories indicated in section
					 3412.6.16.1, the building shall be evaluated as indicated in section 3412.6 and
					 the value for mixed occupancies shall be zero (0). Under the categories and
					 occupancies in Table 3412.6.16, determine the appropriate value and enter that
					 value into Table 3412.7 under Safety Parameter 3412.6.16, Mixed Occupancies,
					 for fire safety and general safety. For buildings without mixed occupancies,
					 the value shall be zero (0).
TABLE 3412.6.16
MIXED OCCUPANCY
								 VALUESa
OCCUPANCY
CATEGORIES
a
b
c
A-1, A-2, R
-10
0
10
A-3, A-4, B, E, F, M, S
-5
0
5
a For fire-resistance
								 ratings between categories, the value shall be obtained by linear
								 interpolation.
3412.6.16.1
				 Categories.
The categories for mixed occupancies are:
1. Category a
Occupancies separated by minimum one (1) hour fire barriers
					 or minimum one (1) hour horizontal assemblies, or both.
2. Category b
Separations between occupancies in accordance with section
					 508.4.
3. Category c
Separations between occupancies having a fire-resistance
					 rating of not less than twice that required by section 508.4.
3412.6.17 Automatic
				 sprinklers.
Evaluate the ability to suppress a fire based on the
					 installation of an automatic sprinkler system in accordance with section
					 903.3.1.1. "Required sprinklers" shall be based on the requirements of this
					 code. Under the categories and occupancies in Table 3412.6.17, determine the
					 appropriate value and enter that value into Table 3412.7 under Safety Parameter
					 3412.6.17, Automatic Sprinklers, for fire safety, means of egress divided by
					 two (2) and general safety.
TABLE 3412.6.17
SPRINKLER SYSTEM
								 VALUES
OCCUPANCY
CATEGORIES
a
b
c
d
e
f
A-1, A-3, F, M, R, S-1
-6
-3
0
2
4
6
A-2
-4
-2
0
1
2
4
A-4, B, E, S-2
-12
-6
0
3
6
12
3412.6.17.1
				 Categories.
The categories for automatic sprinkler system protection
					 are:
1. Category a
Sprinklers are required throughout; sprinkler protection is
					 not provided, or the sprinkler system design is not adequate for the hazard
					 protected in accordance with section 903.
2. Category b
Sprinklers are required in a portion of the building;
					 sprinkler protection is not provided, or the sprinkler system design is not
					 adequate for the hazard protected in accordance with section 903.
3. Category c
Sprinklers are not required; none are provided.
4. Category d
Sprinklers are required in a portion of the building;
					 sprinklers are provided in such portion; the system is one which complied with
					 the code at the time of installation and is maintained and supervised in
					 accordance with section 903.
5. Category e
Sprinklers are required throughout; sprinklers are provided
					 throughout in accordance with Chapter 9.
6. Category f
Sprinklers are not required throughout; sprinklers are
					 provided throughout in accordance with Chapter 9.
3412.6.18 Standpipes.
Evaluate the ability to initiate attack on a fire by making
					 a supply of water available readily through the installation of standpipes in
					 accordance with section 905. Required standpipes shall be based on the
					 requirements of this code. Under the categories and occupancies in Table
					 3412.6.18, determine the appropriate value and enter that value into Table
					 3412.7 under Safety Parameter 3412.6.18, Standpipes, for fire safety, means of
					 egress and general safety.
TABLE 3412.6.18
STANDPIPE SYSTEM
								 VALUES
OCCUPANCY
CATEGORIES
aa
b
c
d
A-1, A-3, F, M, R, S-1
-6
0
4
6
A-2
-4
0
2
4
A-4, B, E, S-2
-12
0
6
12
a This option cannot
								 be taken if Category a or b in Section 3412.6.17 is used.
3412.6.18.1
				 Standpipe.
The categories for standpipe systems are:
1. Category a
Standpipes are required; standpipe is not provided, or the
					 standpipe system design is not in compliance with section 905.3.
2. Category b
Standpipes are not required; none are provided.
3. Category c
Standpipes are required; standpipes are provided in
					 accordance with section 905.
4. Category d
Standpipes are not required; standpipes are provided in
					 accordance with section 905.
3412.6.19 Incidental uses.
Evaluate the protection of incidental uses in accordance
					 with section 509.4.2. Do not include those where this code requires automatic
					 sprinkler systems throughout the buildings, including covered or open mall
					 buildings, high-rise buildings, public garages and unlimited area buildings.
					 Assign the lowest score from Table 3412.6.19 for the building or floor area
					 being evaluated and enter that value into Table 3412.7 under safety Parameter
					 3412.6.19, Incidental Use Area, for fire safety, means of egress and general
					 safety. If there are no specific occupancy areas in the building or floor area
					 being evaluated, the value shall be zero (0).
TABLE 3412.6.19
INCIDENTAL USE AREA
								 VALUESa
PROTECTION REQUIREDBY TABLE
								 509
PROTECTION PROVIDED
None
1 Hour
AS
AS with SP
1 Hour and AS
2 Hours
2 Hours and AS
2 Hours and AS
-4
-3
-2
-2
-1
-2
0
2 Hours, or 1 Hour and AS
-3
-2
-1
-1
0
0
0
1 Hour and AS
-3
-2
-1
-1
0
-1
0
1 Hour
-1
0
-1
0
0
0
0
1 Hour, or AS with SP
-1
0
-1
0
0
0
0
AS with SP
-1
-1
-1
0
0
-1
0
1 Hour or AS
-1
0
0
0
0
0
0
a AS = Automatic
								 sprinkler system; SP = Smoke partitions Note: For table 3412.7, see next
								 page.
3412.7 Building score.
After determining the appropriate data from section 3412.6,
					 enter those data in Table 3412.7 and total the building score.
TABLE 3412.7
SUMMARY SHEET-BUILDING
								CODE
Existing occupancy:_______________________
Year Building was constructed:______________
Type of construction:______________________
Percentage of open perimeter
								increase:_______%
Completely suppressed: Yes____
								No____
Proposed occupancy:____________________
Number of stories:_____ Height in
								feet:______
Area per floor:__________________________
Corridor wall
								rating:______________________
Compartmentation: Yes____ No____
Fire-resistance rating of vertical opening
								enclosures:
Type of HVAC system:________________________
Automatic fire detection: Yes____
								No____
Required door closers: Yes____ No____
, serving number of floors:_________________
Type and
								location:_______________________
Fire alarm system: Yes____ No____
								Type:_________________________________
Smoke control: Yes____ No____
								Type:_________________________________
Adequate exit routes: Yes____ No____ Dead
								ends:___________ Yes____ No____
Maximum exit access travel
								distance:__________________ Elevator controls: Yes____ No____
Means of egress emergency lighting: Yes____ No____
								Mixed occupancies: Yes____ No____
SAFETY PARAMETERS
FIRE SAFETY (FS)
MEANS OF EGRESS (ME)
GENERAL SAFETY (GS)
3412.6.1 Building Height
3412.6.2 Building Area
3412.6.3
								Compartmentation
3412.6.4 Tenant and Dwelling Unit
								Separations
3412.6.5 Corridor Walls
3412.6.6 Vertical
								Openings
3412.6.7 HVAC Systems
3412.6.8 Automatic Fire Detection
3412.6.9 Fire Alarm
								Systems
3412.6.10 Smoke Control
3412.6.11 Means of Egress Capacity
3412.6.12 Dead Ends
* * * *
* * * *
* * * *
3412.6.13 Maximum Exit Access Travel
								Distance
3412.6.14 Elevator Control
3412.6.15 Means of Egress Emergency
								Lighting
* * * *
* * * *
3412.6.16 Mixed Occupancies
3412.6.17 Automatic Sprinklers
3412.6.18 Standpipes
3412.6.19 Incidental Use
* * * *
÷ 2 =
Building score - total
								value
****No applicable value to be inserted.
3412.8 Safety scores.
The values in Table 3412.8 are the required mandatory
					 safety scores for the evaluation process listed in section 3412.6.
TABLE 3412.8
MANDATORY SAFETY
								 SCORESa
OCCUPANCY
FIRE SAFETY (MFS)
MEANS OF EGRESS (MME)
GENERAL
SAFETY (MGS)
A-1
20
31
31
A-2
21
32
32
A-3
22
33
33
A-4, E
29
40
40
B
30
40
40
F
24
34
34
M
23
40
40
R
21
38
38
S-1
19
29
29
S-2
29
39
39
a MFS = Mandatory Fire
								 Safety;
MME = Mandatory Means of Egress;
MGS = Mandatory General Safety.
3412.9 Evaluation of building safety.
The mandatory safety score in Table 3412.8 shall be
					 subtracted from the building score in Table 3412.7 for each category. Where the
					 final score for any category equals zero (0) or more, the building is in
					 compliance with the requirements of this section for that category. Where the
					 final score for any category is less than zero (0), the building is not in
					 compliance with the requirements of this section.
TABLE 3412.9
EVALUATION FORMULAS 
								 a
FORMULA
T3412.7
T 3412.8
SCORE
PASS
FAIL
FS - MFS [GREATER THAN EQUAL TOO]
								 0
(FS)
-
(MFS)
=
ME - MME [GREATER THAN EQUAL TOO]
								 0
(ME)
-
(MME)
=
GS - MGS [GREATER THAN EQUAL TOO]
								 0
(GS)
-
(MGS)
=
a FS = Fire
								 Safety
ME = Means of Egress
MME = Mandatory
GS = General Safety
a MFS = Mandatory Fire
								 Safety
MME = Mandatory Means of Egress
MGS = Mandatory General Safety
3412.9.1
				 Mixed occupancies.
For mixed occupancies, the following provisions shall
					 apply:
1. Where the separation between
				 mixed occupancies does not qualify for any category indicated in section
				 3412.6.16, the mandatory safety scores for the occupancy with the lowest
				 general safety score in Table 3412.8 shall be utilized (see section
				 3412.6).
2. Where the separation
				 between mixed occupancies qualifies for any category indicated in section
				 3412.6.16, the mandatory safety scores for each occupancy shall be placed
				 against the evaluation scores for the appropriate occupancy.