1 Code Requirements for Existing Buildings R. W. Sullivan, Inc. 529 Main St., Suite 203 Charlestown, MA (617)
2 R.W. Sullivan Engineering (RWS) was established in 1945 and currently has 90 employees. RWS is a full service engineering firm offering integrated services in the following disciplines:
3 R.W. Sullivan Engineering Code Group Comprehensive Code Services Building, Fire, Life Safety, Accessibility Plan Review Existing Building Surveys Variances and Appeals National and International Experience
4 R.W. Sullivan Engineering Code Group Beyond the Code Revit Sustainability and LEED Atrium Fire/Smoke and Egress Modeling Hazardous Materials Structural Fire Resistance
5 New Building Code: Introduction to IEBC Compliance Options Prescriptive Work Area Performance Energy Code Agenda Existing Buildings Accessibility Codes: Massachusetts Architectural Access Board Regulations American s with Disabilities Act Definition of an Existing Building: Existing buildings which have been legally occupied prior to the adoption of this code (IEBC 202)
6 MA Building Code Chapter 1: Applicability to existing buildings (780 CMR 102.6) The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code or, as deemed necessary by the building official for the general safety and welfare of the occupants and the public.
7 Sprinklers in Existing Buildings Amended MGL148 Section 26G All buildings over 7,500 gsf undergoing addition or major renovation Renovations totaling 33% or more of the total gross square footage Renovation costs equal to or greater than 33% of the assessed building value Applies throughout the state instead of local adoption
8 International Existing Building Code (2009 IEBC) To be adopted with the 8 th Edition of 780 CMR as Chapter 34 Will be adopted August 6, 2010 with a 5 to 6 month concurrency period Three ways to comply with the code: Prescriptive Compliance Method: Additions, alterations or repairs, unless otherwise noted, follow that of new construction. Work Area Compliance Method: Requirements are based on level of work and what is being done. Performance Compliance Method: Utilizes a point system to ensure the level of public safety, health & welfare is maintained or exceeded after a renovation.
9 MA Egress Amendment For existing buildings with other than H and I-2 occupancies, the total required egress width is permitted to be calculated using: 0.2 inches per occupant for stairways 0.15 inches per occupant for other egress components As long as the building is sprinklered per Chapter 9
10 Prescriptive Compliance Method Chapter 3 Building Materials (IEBC 301.2) Existing materials may remain only if they are safe. New and replacement materials must be that of new construction. Like materials are only permitted if they are safe.
11 Prescriptive Compliance Method Chapter 3 Repairs (304): Must follow the building material requirements of Work on non-damaged components required for the repair are exempt from the alteration requirements
12 Prescriptive Compliance Method Chapter 5 Repairs: Nonstructural repair work other than routine maintenance / ordinary repairs requires a permit and can be made with same or like materials. Structural damage that is not substantial can be repaired to restore the building to its original condition. Substantial structural damage must be repaired to meet minimum loads described in (lateral loads) & (gravity loads).
13 Prescriptive Compliance Method Chapter 3 Additions (302): Additions to the building or structure must comply with 780 CMR (2009 IBC) for new construction.
14 Prescriptive Compliance Method Chapter 3 Alterations (303): Any new building systems or portions thereof must comply with 780 CMR for new construction. New and existing materials are permitted to meet
15 Prescriptive Compliance Method Section Alterations: Existing structure carrying gravity loads must meet the code for new construction under any of the following circumstances: The design gravity load is increased by 5%. The capacity of the structural member is reduced. Existing structure carrying lateral loads must meet the code for new construction under any of the following circumstances: The design lateral load is increased. The alteration results in a structural irregularity as defined in ASCE 7. The capacity of the structural member is reduced. Exception: Lateral load-carrying members where the demandcapacity ratio with the alteration is increased by less than 10% of the ratio when ignoring the alteration.
16 Prescriptive Compliance Method Chapter 3 Fire Escapes (305) Existing fire escapes are only allowed to be counted as means of egress on existing buildings if tested and certified. New fire escapes on existing buildings are only permitted if exterior stairs are infeasible. Restrictions on location Cannot access through a window or use ladders. Glass Replacement (306) All new glass must meet new construction requirements.
17 Prescriptive Compliance Method Chapter 3 Change of Occupancy (307) Cannot change use/occupancy unless the building meets the requirements for proposed occupancy. Variances allowed if the new use is less hazardous based on life and fire risk (subject to approval) Also must meet electrical, mechanical and plumbing code (subject to approval)
18 Work Area Compliance Chapters 4-12 Provisions are based on the type of work as defined in Chapter 4 Repairs (402): Patching, restoration, or replacement of damaged elements to good or sound condition for maintenance purposes. Level 1 Alteration (403): Alterations to elements to serve the same purpose. No reconfiguration of spaces. Level 2 Alteration (404): Reconfiguration of spaces Addition or elimination of windows or doors Installation of any additional equipment Renovation area 50% of the aggregate building area. Level 3 Alteration (405): Renovation area > 50% of the aggregate building area. Change of Occupancy (406) Additions (407) Historic Buildings (408) Relocated Structures (409)
19 Repairs Chapter 5 Nonstructural repair work other than routine maintenance / ordinary repairs requires a permit and can be made with same or like materials. Structural damage that is not substantial can be repaired to restore the building to its original condition. Substantial structural damage must be repaired to meet minimum loads described in (lateral loads) & (gravity loads).
20 Level 1 Alteration Chapter 6 New finishes must comply with the IBC for new construction ( ). New work must comply with the materials and methods of the applicable code (602.4). Structural upgrades could include: Gravity members if dead load increased by > 5% Anchoring / bracing of masonry / concrete walls Roof diaphragms and connections to resist wind loads Level 1 alterations do not require compliance with the International Energy Conservation Code (IECC) (607.1)
21 Level 2 Alteration Chapter 7 Compliance with Level 1 work required (701.2). All new construction and elements must comply with the code for new construction except as noted in Chapter 7 (701.3). For example dead end corridors and ceiling heights have slightly less stringent requirements.
22 Level 2 Alteration Floor Openings (703.2) All floor openings must be enclosed with 1 hour fire resistance rated construction except: Where permitted by the code for new construction Mini-Atrium : Moderate hazard content in fully sprinklered space or low hazard without sprinklers Lowest or next-to-lowest floor is street level Open and unobstructed communicating space Considered a single floor area for egress capacity Occupants within the mini-atrium have access to ½ the exits without having to traverse another story within the mini-atrium space Occupants outside the mini-atrium have access to at least one exit without having to enter the mini-atrium space Use Group specific allowances for rating reductions or allowed floor openings
23 Level 2 Alteration Floor Openings (703.2) Additional Requirements ( ): If work area exceeds 50% of the floor area, then all vertical openings other than stairways must be enclosed Does not include vertical openings in tenant spaces completely outside the scope of work. Stairway Enclosure Requirements ( ): If work area exceeds 50% of the floor area, then egress stairways must be enclosed with smoketight construction (at a minimum) from the highest work area floor and all floors below. Unless enclosure is not required by the IBC
24 Level 2 Alteration Chapter 7 Interior finishes in work area must comply with IBC requirements (703.4) If the work area is > 50% of the floor area, entire floor must use IBC approved finishes Automatic sprinkler systems must be installed in all occupancies if: (704.2) The work area exceeds 50% of the floor area The water supply is sufficient The IBC requires it Fire alarm and detection systems are required in select occupancies (704.4)
25 Level 2 Alteration Chapter 7 Fire escapes are permitted to be used as a means of egress as long as they meet the requirements of In general, egress requirements for doorways or corridors in work areas follow that of new construction ( ) Work area alterations must meet energy requirements of the IECC, but the entire building or structure is not required to conform. (711)
26 Level 3 Alteration Chapter 8 Compliance with Level 1 and 2 work required (801.2) Existing shafts and vertical openings must be protected by a 1 hour wall from the floor of the work area to the level of exit discharge (803.1) Automatic sprinkler system must be provided in all work areas where required by (804.1); in addition M.G.L. c G may require a sprinkler system in buildings undergoing major alterations. Fire alarm and detection systems must be provided throughout the building where required by the building code (804.2). Means of egress lighting must be provided from the highest work area floor to the floor of exit discharge (805.2). Exit signs must be provided from the highest work area floor to the floor of exit discharge (805.3).
27 Level 3 Alteration Chapter 8 Structural analysis required More than 30% of total floor and roof areas are structurally altered within a 12-month period Subject to IBC wind loading and reduced seismic forces Less than 30% of total floor and roof areas are structurally altered within a 12-month period Must demonstrate that the altered building complies with the loads applicable at the time of original construction or most recent substantial renovation
28 Change of Occupancy Chapter 9 Definition - A change in the purpose or level of activity within a building that involves a change in application of the requirements of this code Applies When the occupancy classification is not changed Where there is a change in the occupancy classification or the occupancy group designation changes
29 Change of Occupancy Chapter 9 Where the change in use is to a special use category, the building must comply with the code for new construction (902.1) Covered mall buildings Atriums Motor vehicle-related occupancies Aircraft-related occupancies Motion picture-projection rooms Stages and platforms Special amusement buildings Incidental use areas Hazardous materials
30 Change of Occupancy Chapter 9 Where the change in use is to a special use category, the building or work area s electrical system must be upgraded to comply with NFPA 70 (908.1) Hazardous locations Commercial garages, repair and storage Aircraft hangars Gasoline dispensing and service stations Bulk storage plants Spray application, sipping and coating processes Health care facilities Places of assembly Theatres, TV studios Motion picture projection rooms Agricultural buildings
31 Change of Occupancy Chapter 9 If the following conditions are met the plumbing must be upgraded to meet the new occupancy in accordance with the International Plumbing Code: (910) Increased demand Food-handling occupancies Where grease traps are required Chemical wastes Group I-2 occupancies
32 Change of Occupancy Chapter 9 Change of Occupancy Classification Within a group From one group to another Level 3 Where not separated from the remainder of the building, the entire building must comply with Level 3 requirements Fire sprinkler, alarm & detection systems are required based on the new occupancy Interior finishes of areas that changed occupancies must meet the requirements of new construction (912.3)
33 Change of Occupancy Chapter 9 Hazard Categories determine what needs to be updated to new construction standards when changing occupancies.
34 Hazard Categories Means of Egress (912.4) When changing to a higher hazard category occupancy, means of egress must comply with new construction. When changing to equal or lesser occupancy hazard category: Existing egress elements must comply with Level 3 Alteration criteria New egress elements must meet criteria of new construction. Either way, the egress capacity must meet or exceed the requirements for new construction for the occupancy.
35 Hazard Categories Heights and Areas (912.5) When changing to a higher hazard category, the height and area of the building or structure must comply with that of new construction for the new occupancy. Fire barriers in separated mixed-use buildings must comply with fire resistance requirements of new construction. When changing to equal or lesser hazard category, the existing height and area of the building is acceptable.
36 Hazard Categories Exterior Wall Fire-Resistance (912.6) When changing to a higher hazard category, the rating of the exterior walls and the opening protectives of the building or structure must comply with that of new construction for the new occupancy. When changing to equal or lesser hazard category, the existing exterior walls and openings of the building are acceptable.
37 Hazard Categories Enclosure of Vertical Shafts (912.7) In general, when changing to a higher hazard category occupancy, the following must comply with new construction: Stairways (with exceptions) Other Vertical Shafts (elevators, service & utility shafts, etc.) (with exceptions)
38 Additions Chapter 10 All additions to existing structures, including areas impacted by an addition, must meet the new construction requirements unless otherwise noted (1001.1) Additions must meet height and area limitations of the code for new construction (1002.1) Existing fire areas increased by the addition must be provided with fire protection systems per the code for new construction (1002.3)
39 Additions Chapter 10 Existing structure carrying gravity loads must meet the code for new construction under any of the following circumstances: The design gravity load is increased by 5%. The capacity of the structural member is reduced. The addition and existing building acting as a single structure must meet the code for new construction for lateral loads where the addition is not structurally independent. Exceptions: Existing lateral load-carrying members where the demand-capacity ratio with the addition is increased by less than 10% of the ratio when ignoring the addition.
40 Historic Buildings Chapter 11 Defined as: Buildings that are listed in or eligible for listing in the National or State Register of Historic Places, or designated as historic under an appropriate state or local law There is no obligation for owners of historic buildings to use the provisions of this chapter (1101.1). When an R-3 building is also used for Group A, B or M purposes (tours, exhibits, etc.), or for house museums less than 3,000 sq ft, the code official may allow it to be classified as a B occupancy (1101.3)
41 Historic Buildings Chapter 11 Repairs to any portion of the historic building or structure are permitted to be with original or like materials and original methods of construction (1102.1). Replacement of existing or missing features with original materials is permitted. Replacement of individual components of a building system can be replaced in kind without requiring the system to comply with the code for new construction (1102.5). If a historic building poses a distinct fire hazard the code official may require the installation of an automatic fire-extinguishing system (1103.2). Existing egress components are permitted as long as the code official deems they are safe of egress (1103.3).
42 Historic Buildings Chapter 11 In buildings 3 stories or less, exit stairways must be enclosed to limit the spread of smoke; however, they are not required to have a fireresistance rating (1103.6). Grand stairways need not comply with the handrail and guard requirements as long as they are not structurally dangerous (1103.9).
43 Historic Buildings Chapter 11 Manual fire extinguishing equipment and manual pull stations are required for house museums in all use groups other than R-3 and R-4 ( ). Fire extinguishers aren t required if the building is equipped with a sprinkler system. Fire alarm systems are required in all house museums as specified in Section (2) Smoke detection equipment is only required in R-1,-2,-3 when equipped with a sprinkler system.
44 Historic Buildings Chapter 11 Change of occupancy in an historic building shall apply with the appropriate provisions of Chapter 9 unless otherwise noted. (1105.1) Some Notable exceptions: Building area limits are allowed to be exceeded by 20% for change of occupancy (1105.2) Occupancy separation of 1 hour can be omitted if equipped with an approved automatic sprinkler system (1105.4) For buildings less than 3,000 sq ft existing conditions are permitted to remain at all stairs and rails ( )
45 Relocated or Moved Buildings Chapter 12 The building must be located on the lot in accordance with the IBC or IRC as applicable The foundation and the connection to the foundation must be in accordance with the IBC or IRC as applicable.
46 Performance Compliance Methods Chapter 13 Applies to alterations, repairs, additions and change of occupancies in existing buildings including historic and moved. Intended to maintain or increase the current level of safety, health and general welfare in existing buildings.
47 Performance Compliance Methods Chapter 13 Change in Occupancy Provisions of this chapter must be that of the new occupancy Partial Change in Occupancy If separated by a fire barrier then only the section changed needs to comply If not, then the more stringent of the provisions between the two occupancies shall apply to the entire building Additions Must meet IBC requirements for new construction. Height and area limitations of IBC can not be exceeded If a fire wall is provided between existing building and addition, then the addition can be considered a separate building. Alterations and Repairs If the existing building does not comply with the code for new construction, any alterations or repairs cannot result in the buildings being less safe.
48 Performance Compliance Methods Chapter 13 The design evaluation is comprised of three main categories: Fire Safety Structural Fire Resistance Automatic Fire Detection Fire Alarm Fire-Suppression System Means of Egress Configuration Characteristics Support Features General Safety Fire Safety Parameters Means of Egress Parameters
49 Performance Compliance Methods Chapter 13 The evaluation specifically looks at: Building Height & Area Compartmentation Tenant & Dwelling Unit Separations Corridor Walls Vertical Openings HVAC Systems Automatic Fire Detection Fire Alarm Systems Smoke Control Means of Egress (Capacity and Number) Dead Ends Travel Distance Elevator Control Emergency Lighting Mixed Occupancies Automatic Sprinklers Standpipes Incidental Accessory Occupancies
50 Evaluation Height & Area Section & 2 Allowable building height is based on an equation (13-1 & -2) that correlates the allowable height in IBC, the actual building height and the construction type ( ). Allowable building area is based on the tabular value from the IBC as well as the actual area of the space ( ).
51 Evaluation Compartmentation Section Points are awarded based on the size of the compartment enclosed by fire barrier walls and floor/ceiling assemblies.
52 Evaluation Tenant/Dwelling Separation Section Points are awarded based on occupancy and fireresistance rating of the barrier. A. No fire partitions; incomplete fire partitions; no doors; doors not self closing or automatic closing B. Less than 1 hour assembly, or not constructed in accordance with Chapter 7 of IBC C. 1+ hour fire partitions and 1-2 hour fire rated floor assemblies in accordance with Chapter 7 of IBC D. 1-2 hour fire partitions and 2+ hour or greater fire-resistance rated floor assemblies E. 2+ hour fire barriers and floor assemblies in accordance with Chapter 7 of IBC
53 Evaluation Corridor Walls Section Points are awarded based on occupancy and fireresistance rating of the barrier. A. No fire partitions; incomplete fire partitions; no doors; doors not self closing or automatic closing B. Less than 1 hour fire-resistance rating, or not constructed in accordance with Chapter 7 of IBC C. 1-2 hour fire partitions in accordance with Chapter 7 of IBC or without corridors as permitted by Section IBC 1018 D. 2+ hour fire-resistance rating with doors in accordance with Chapter 7 of IBC
54 Evaluation Vertical Openings Section Points are awarded based on the opening protection value which is then multiplied by the construction-type factor. A protection value of 2 can be granted for single story buildings or if all unenclosed vertical openings conform to IBC Section 708
55 Evaluation HVAC Systems Section Points are awarded based on the ability of the system to resist smoke and fire movement A. Plenums not in accordance with IMC 602 (-10 Points) B. Air movement in egress elements not in accordance with IBC (-5 points) C. Both categories A and B are applicable (-15 points) D. Compliance with IBC and IMC 602 (0 points) E. Systems serving one story; or a central boiler/chiller system without ductwork connecting two or more stories (+5 points)
56 Evaluation Automatic Fire Detection Section Points are awarded based on the smoke detection capability, location and operation of automatic fire detectors A. None B. Existing smoke detectors in HVAC systems maintained to IFC standards C. Smoke detectors in HVAC systems installed in accordance with requirements of new construction D. Smoke detectors throughout all floor areas other than individual sleeping units, tenant spaces and dwelling units. E. Smoke detectors installed throughout the fire area
57 Evaluation Fire Alarm Systems Section Points are awarded based on the capability of the fire alarm system in accordance with IBC 907 A. None B. Fire alarm system with manual fire alarm boxes (per IBC 907.3) and alarm notification appliances (per IBC ) C. Fire alarm system in accordance with IBC 907 D. Category C plus a required emergency/voice alarm communications system and a fire command station (per & 911)
58 Evaluation Smoke Control Section Points are awarded based on the ability for natural or mechanical venting, exhaust, or pressurization system to control the movement of smoke from a fire. A. None B. Sprinkler system with readily operable exterior wall openings (or approved breakable windows) provided at 20 ft 2 per 50 linear ft of exterior wall C. One enclosed exit stairway accessible from each occupied floor with operable exterior windows in addition to compliance with Category B. D. One smokeproof enclosure with openings per Category B E. Sprinkler system with approved mechanical smoke containment air-handling equipment on each floor F. Each stairway is either: a smokeproof enclosure per IBC ; pressurized per IBC ; or has operable exterior windows
59 Evaluation Means of Egress Section Points are awarded based on the egress capacity and number of exits available to the building occupants as stipulated by IBC Chapter 10. A. Compliance with minimum required means of egress capacity or number of exits achieved through the use of a fire escape per B. Capacity of the means of egress complies with IBC 1004 and number of exits complies with IBC 1021 C. Capacity of the means of egress is equal to or greater than 125% of the required capacity and complies with the minimum dimensions of the IBC. The number of exits complies with IBC 1021 D. The number of exits exceeds the number required by IBC 1021 and are located at least the distance specified in IBC E. Meets both categories C and D
60 Evaluation Dead Ends Section Points are awarded based on the length of the exit travel path where occupants are confined to a single path of travel A. Dead end of 35 in non-sprinklered building or 70 in sprinklered building B. Dead end of 20 ; or 50 in Group B (per IBC Exception 2) C. No dead ends; or ratio of length to width is less than 2.5:1 Single Path of Travel
61 Evaluation Travel Distance Section Points are awarded based on the length of the exit travel path to an approved exit. The maximum allowable distance is determined by IBC
62 Evaluation Elevator Controls Section Points are awarded based on the elevator control features available to the fire department on installed elevators. A. No elevator B. Any elevator without Phase I and II recall C. All elevators with Phase I and II recall per IFC D. All meet Category C; or Category where permitted without recall; and at least one elevator that complies with new construction requirements serves all occupied floors
63 Evaluation Emergency Lighting Section Points are awarded based on the provided emergency lighting in the means of egress A. Lighting and exits signs not provided with emergency power per IBC 2702 B. Lighting and exits signs provided with emergency power per IBC C. Lighting and exits signs provided with emergency power that provides protection in the event of power failure to the site or building
64 Evaluation Mixed Occupancies Section Points are awarded based on the separation provided between different occupancies in the building. If there are no mixed occupancies, the value is zero. A. Separated by a minimum 1 hour fire barriers and/or 1 hour horizontal assemblies B. Separation between occupancies is in accordance with IBC C. Separations are not less than twice the required separation from IBC 508.4
65 Evaluation Automatic Sprinklers Section Points are awarded based on the ability to suppress a fire based on the installation of automatic sprinklers per IBC Note: Sprinklers required by M.G.L. c G are not considered required for this section. A. Sprinklers are required throughout; however, not provided or not adequate for the hazard protected per IBC 903 B. Required in a portion of the building; however, not provided or not adequate for the hazard protected per IBC 903 C. Not required and none are provided D. Required in a portion of the building, provided in compliance with code at time of construction, and maintained/supervised per IBC 903 E. Required throughout and are provided per Chapter 9 of IBC F. Not required throughout but are provided per Chapter 9 of IBC
66 Evaluation Standpipes Section Points are awarded based on the ability to initiate an attack on a fire through the use of water provided by a standpipe system per IBC 905 A. Standpipes are required but are not provided or the design is not compliant with IBC B. Not required, not provided C. Required and provided per IBC 905 D. Not required but provided per IBC 905
67 Evaluation Accessory Occupancy Section Points are awarded based on the protection of incidental accessory occupancies per Not including those that require suppression throughout the building (covered malls, high-rises, unlimited area buildings, etc) If there are no specific occupancy areas in the building or floor being evaluated then the score is zero.
68 Evaluation Building Score Section Insert points from previous sections
69 Evaluation Safety Scores Section
70 Evaluation Building Safety Section If the building score is higher than the required score the building is compliant Mixed Occupancies: If not separated per the categories in , the mandatory safety scores for the occupancy with the lowest general safety score shall be utilized If separated per a category in then each occupancy should be scored separately based on the appropriate occupancy
71 Performance Compliance Methods Evaluation Example Group B building: No corridor fire partitions (-5 points) Meets minimum means of egress capacity requirements (-1 point) No dead ends (+2 points) Emergency lighting has emergency power in event of power failure to site (+4 points) Net of 0
72 Construction Safeguards Chapter 14 Construction sites must be kept safe for workers and pedestrians: Fire protection systems Fire extinguishers (1404) Standpipes (1406) Sprinkler systems (1407) Means of egress Protected walkways Barricades/Barriers Covered walkways (when required) Adequate lighting Accessibility requirements
73 Energy Code The 2009 IEBC follows the 2009 IECC for energy provisions Massachusetts has front end amendments for IECC The code is not to be used to require the removal, alteration, abandonment, nor prevent the continued use of an existing building or building system
74 Energy Code Additions, renovations, and repairs to an existing building must conform to the code for new construction, without requiring the unaltered portion of the building to comply If the energy use of the building is not increased the following need not comply: Storm windows Glass only replacements in existing sash and frame (unless required elsewhere in IEBC) Existing ceiling, wall, and floor cavities exposed during construction if filled with insulation Construction where existing roof, wall or floor cavity is not exposed
75 521 CMR: Massachusetts Architectural Access Board Existing Buildings: Renovations (3.3) The level of compliance for existing buildings is based on the following thresholds: Work costs less than $100,000: only the work being performed is required to comply. Work costs $100,000 or more but less than 30% of assessed value of existing building: in addition to work being performed, an accessible public entrance and an accessible toilet room, telephone and drinking fountain must comply with 521 CMR (if public toilets, telephones and drinking fountains are provided). Exempt Work: Curb cuts, MEP without architectural alterations, roof repair or replacement, window repair or replacement, repointing and masonry repair, septic systems, site utilities, and landscaping.
76 521 CMR: Massachusetts Architectural Access Board Existing Buildings: Renovations (3.3), con t Cost of work is equal to 30% or more of the assessed value of the existing building: entire building is required to comply with 521 CMR. Exempt Work: None In determining applicability of 521 CMR, the cost of all work performed within a 3 year period must be added together.
77 ADA: 28 CFR Part 36 Existing Buildings: Removal of Barriers (36.304) In existing buildings classified as a place of public accommodation, existing architectural barriers are required to be removed where such removal is able to be carried out without much difficulty or expense. Priorities: Provide accessible route and entrance to facility. Provide access to areas within the facility where goods and services are made available to the public. Provide accessible restroom facilities. Provide access to accommodations, privileges, advantages, goods, or services of a place of public accommodation by necessary measures Disproportionality is defined in the DOJ Rule (Section ) as costing more than 20% of the cost of the alteration to the primary function area.
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