Understanding IEBC Section 603: Level 2 Alterations

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Understanding IEBC Section 603: Level 2 Alterations

The International Existing Building Code (IEBC) provides guidelines for modifying existing buildings. Section 603 specifically deals with "Level 2 alterations," which involve more extensive changes than simple repairs or replacements. Here's a detailed breakdown to help you navigate these requirements.

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Scope of Level 2 Alterations (Section 603.1)​

What Qualifies as a Level 2 Alteration?

Level 2 alterations include:

1. Addition or Elimination of Doors or Windows:
   
   • Installing new doors or windows where none existed before.
   • Removing existing doors or windows without replacing them.
2. Reconfiguration or Extension of Systems:
   
   • Modifying the layout of building systems like electrical, plumbing, or HVAC.
   • Extending existing systems to new areas within the building.
3. Installation of Additional Equipment:
   
   • Adding new equipment that wasn't part of the original building design, such as elevators or security systems.

Work Area Limitation:

• The alterations must affect 50% or less of the building's total area to be classified as Level 2.

Exception to Level 2 Classification:

• Movable Fixtures and Low Partitions:
  • Moving or adding non-fixed items like furniture, display cases, or counters.
  • Installing partitions that are 5 feet 9 inches (1753 mm) or shorter.
  • These changes are considered minor and do not elevate a project to a Level 2 alteration.

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Application of Level 2 Alterations (Section 603.2)​

Compliance Requirements:

• Projects classified as Level 2 alterations must adhere to:
  • Chapter 7 of the IEBC: Covers Level 1 alterations, which include basic repairs and replacements.
  • Chapter 8 of the IEBC: Contains additional requirements specific to Level 2 alterations.

Implications:

• Cumulative Compliance: Meeting both chapters ensures all safety and code requirements are satisfied.
• Example Scenario:
  • If you're replacing siding (a Level 1 alteration) and decide to remove a window (which adds Level 2 criteria), you must comply with the provisions for both levels.

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Key Considerations​

1. Extent of Work Area:
   
   • Only areas undergoing reconfiguration are considered the work area.
   • Not all Level 2 alterations will have a designated work area, especially if the changes don't involve spatial reconfiguration.
2. Understanding Exceptions:
   
   • The exception aligns with the intent to exclude minor interior changes that don't affect the building's structural or life safety systems.
   • Rearranging furniture or installing low-height partitions typically doesn't require a permit under the International Building Code (IBC) and is thus excluded.
3. Accessibility Improvements:
   
   • Alterations solely for improving accessibility, as required by Section 306, may follow the provisions of Chapter 7 instead of elevating to Level 2 requirements.

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Why This Matters​

• Safety and Compliance: Adhering to the correct alteration level ensures that all modifications meet safety standards and code requirements.
• Planning and Permitting: Knowing whether your project is a Level 2 alteration affects the permitting process, required inspections, and compliance obligations.
• Cost and Time Management: Understanding the scope can help in budgeting for additional requirements that come with Level 2 alterations.

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TBCF Summary

Level 2 alterations under IEBC Section 603 involve significant modifications like adding or removing doors/windows, reconfiguring systems, or installing new equipment, affecting up to half of the building's area. It's crucial to distinguish these from minor changes to ensure full compliance with both Chapter 7 and Chapter 8 of the IEBC, thereby safeguarding the integrity and safety of the building during and after the alteration process.