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Planning & DevelopmentDepartment
Self Certification Program
2018 International Existing Building Code (IEBC)
1TRT00600
IEBC Background
Intent of This Code• Safeguard health and safety• Protect property and public welfare
Many Existing Buildings• Do not comply with current codes for new construction• But can maintain existing levels of compliance
2018 Code Cycle• ICC deleted IBC Chapter 34 EXISTING
STRUCTURES• Thence requiring the use of IEBC
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Overview
• 2018 International Existing Building CodeAs Amended by the city of Phoenix
• Amendments can be found onlinehttps://www.phoenix.gov/pdd/devcode/buildingcode
• There are a total of 13 amendments
• 6 of the 13 amendments are in Chapter 12 Historic Buildings
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2018 IEBCChapter 1 Amended
• PART 1 – SCOPE AND APPLICATION
Section 101 – GeneralSection 101.6 – Appendices. Phoenix did not adopt any of the Appendices
• PART 2 – RESERVED
Instead…
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See Phoenix Building Construction Code Administrative Provisions
Construction Documents
• A code summary is required showing the Compliance Method chosen and applicable requirements.
• Typical submittal requirements– Site plan, Construction Type, Exterior Wall Envelope,
Means of Egress etc.
• Valuation of the proposed work.
• Other data as needed, like special inspection certificates.5
Core Definitions
ADDITION. An extension or increase in floor area, number of stories or height of a building
or structure
ALTERATION. Any construction or renovation to an existing structure other than a repair or
addition.
REPAIR. The reconstruction, replacement or renewal of any part of an existing building for the purpose of its maintenance or to correct
damage.6
Core Definitions
REHABILITATION. Any work, as described by the categories of work
defined herein, undertaken in an existing building.
EXISTING BUILDING. A building erected prior to the date of adoption of the appropriate code, or one for which a legal building permit has
been issued. 7
Core Definitions cont.
• SUBSTANTIAL STRUCTURAL DAMAGE. A condition where any of the following apply:1. The vertical elements of the lateral-force-resisting system have suffered damage such that the lateral load-carrying capacity of any story in any horizontal direction has been reduced by more than 33 percent from its pre-damage condition.
2. The capacity of any vertical component carrying gravity load, or any group of such components, that has a tributary area more than 30 percent of the total area of the structure’s floor(s) and roof(s) has been reduced more than 20 percent from its pre-damage condition, and the remaining capacity of such affected elements, with respect to all dead and live loads, is less than 75 percent of that required by the International Building Code for new buildings of similar structure, purpose and location.
• WORKAREA. That portion or portions of a building consisting of all reconfigured spaces as indicated on the construction documents. Work area excludes other portions of the building where incidental work entailed by the intended work must be performed and portions of the building where work not initially intended by the owner is specifically required by this code.
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Section 202 General DefinitionsPrimary Function
• A primary function is a major activity for which the facility is intended. Areas that contain a primary function include, but are not limited to, the customer services lobby of a bank, the dining area of a cafeteria, the meeting rooms in a conference center, as well as offices and other work areas in which the activities of the public accommodation or other private entity using the facility are carried out.
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Primary Function (cont.)
• Mechanical rooms, boiler rooms, supply storage rooms, employee lounges or locker rooms, janitorial closets, entrances, corridors and restroom are not areas containing a primary function.
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Chapter 3Compliance Methods
3 Options
PrescriptiveChapter 5
Work AreaChapters 6 - 12
Performance Chapter 13
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Chapter 3Compliance Methods
This chapter outlines three options available to designers for construction related to existing buildings:
Prescriptive compliance method (Section 301.3.1)• Chapter 5 & IFC
Work area compliance method (Section 301.3.2)• Chapters 6 through 12
Performance compliance method (Section 301.3.3)• Chapter 13
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Chapter 4Repairs
401.1 ScopeRepairs shall comply with the requirements of this chapter. Repairs to historic buildings need only comply with Chapter 12.
• There are also provisions for Electrical, Mechanical & Plumbing.
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Chapter 5Prescriptive Compliance Method
• This chapter duplicates the provisions that were in the 2012 IBC Chapter 34 Sections 3401 through 3409.
• All alterations shall comply with the IBC – Section 503.1
• The following areas are addressed with this option: Additions Alterations Fire Escapes Windows and Emergency Openings
Changes of Occupancy Historic Buildings
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Chapter 6Classification of Work
Used in conjunction with Chapters 6 through 13, this chapter …
• Provides categories for various construction tasks, referred to as the classification of work
• Refers the reader to associated chapters in the code for various requirements and work related to those tasks
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Construction Tasks Include…
Alterations
Repairs
AdditionsChange of Occupancy
Relocated Buildings
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3 Levels of AlterationsLevel 1 – Section 602 & Chapter 7• Replace/remove equipment/fixtures• Replace or cover wall/roof coverings• Reroof permits
Level 2 – Section 603 & Chapters 7-8• Reconfigure space/systems• Add/eliminate doors or windows• Add equipment
Level 3 - Section 604 & Chapters 7-8- 9• Based on defined work area• Applies where work area exceeds 50% of
aggregate building area17
Chapter 7Alterations – Level 1
• Level 1 alterations include interior finishes and trim
• Chapter 7 describes guidelines.
• Level 1 alterations to historic buildings shall comply with Chapter 7 except as modified by Chapter 12 for historic buildings.
• Does not involve space reconfiguration.
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Chapter 8Alterations – Level 2
• Involves extensive space reconfiguration that does not exceed 50% of the building area.
Section 801.3 – Compliance.
All new construction elements, components, systems and spaces shall comply with the IBC requirements, with 6 exceptions…
1. OK to add windows without complying with IBCRequirements for light and ventilation.
2. Newly installed electrical equipment to complywith Section 807.19
Chapter 8Alterations – Level 2
3. OK for newly constructed dead-end corridor length to comply with 805.6.
4. 7’ minimum ceiling height for new habitable and occupiable spaces & corridors.
5. In below grade transportation stations, existing and new escalators width can be 32”.
6. New structural members and connections can comply with alternative design criteria in accordance with Section 302.
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Chapter 9Alterations – Level 3
• Involves alterations that cover 50% or more of the aggregate area of the building.
• Additional building features are triggered beyond the actual work area and other parts of the building where no alterations are planned.
• Basic principle is that Level 3 alterations will comply with the IBC but the remainder of the building can remain as is.
• It is assumed that the existing building is an approved structure. 21
Chapter 10Change of Occupancy
The requirements of Chapter 10 are typically in addition to the requirements of Chapters 7, 8, and 9 (incremental approach)
• Sections 1002 – 1010. Change of use by reconfiguring a space within the same occupancy group or classification where there is a change in application of the requirements of this code.
• Sections 1002 – 1011. Change of occupancy classification or group.
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Chapter 11Additions
• Additions are required to comply with current codes for new construction except as modified by this chapter.
• The existing building can remain without any alteration provided the addition does not impact the existing building.
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Chapter 12Historic Buildings
• 6 of the 13 IEBC amendments are in Chapter 12
• Other considerations for classification as an historical building include the structural condition of the building (i.e., is the building structurally sound), its proposed use, its impact on life safety and how the intent of the code, if not the letter, will be achieved.
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Chapter 13Performance Compliance Methods
• Neither the designer nor the code official can physically inspect and evaluate every aspect of an existing building or structure.
• Chapter 13 emphasizes 19 critically important safety parameters to be evaluated in determining the level of safety for an existing building.
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Table 1301.7 Summary Sheet19 Safety Parameters
• Building Height• Building Area• Compartmentation• Tenant and Dwelling
Separations• Corridor Walls• Vertical Openings• HVAC Systems• Automatic Fire Detection• Fire Alarm System
• Smoke Control• Means of Egress • Dead ends• Max Exit Travel Distance• Elevator Control• Means of Egress Emergency
Lighting • Mixed Occupancies• Automatic Sprinklers• Standpipes• Incidental Use
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Table 1301.7Summary Sheet – Building Code
• The 19 safety parameters areevaluated and entered in theSummary Sheet.
• Three categories: Fire Safety Means of Egress General Safety
• The resulting building score-total values in each category are then entered into Table 1301.9 along with the associated value for each category from Table 1301.8.
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Table 1301.9Evaluation Formulas
• Per Section 1309, where the final score for any category equals zero or more, the building is in compliance for that category
• Where the final score for any categoryis less than zero, the buildingis not in compliance.
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Chapter 14Relocated or Moved Buildings
• Any structure that is moved to a different lot or a new location on the same lot falls within the scope of Chapter 14.
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