Ohio Administrative Code 4101:1 — Department of Commerce | Board of Building Standards: Ohio Building Code

Chapter 4101:1-1 Administration

Ohio Adm.Code 4101:1-1-01 Administration.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-2 Definitions

Ohio Adm.Code 4101:1-2-01 Definitions.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-3 Classification of Facilities

Ohio Adm.Code 4101:1-3-01 Occupancy classification and use.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 12:21 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-4 Special Detailed Requirements

Ohio Adm.Code 4101:1-4-01 Special detailed requirements based on occupancy and use.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-5 Height and Area

Ohio Adm.Code 4101:1-5-01 General building heights and areas.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-6 Construction Types

Ohio Adm.Code 4101:1-6-01 Types of construction.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 25, 2025 at 6:08 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-7 Fire Resistance

Ohio Adm.Code 4101:1-7-01 Fire and smoke protection features.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated July 1, 2025 at 2:00 AM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-8 Interior Finishes

Ohio Adm.Code 4101:1-8-01 Interior finishes.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 11:50 AM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-9 Fire Protection Systems

Ohio Adm.Code 4101:1-9-01 Fire protection and life safety systems.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-10 Means of Egress

Ohio Adm.Code 4101:1-10-01 Means of egress.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-11 Accessibility for Physically Disabled Persons

Ohio Adm.Code 4101:1-11-01 Accessibility.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-12 Interior Environment

Ohio Adm.Code 4101:1-12-01 Interior environment.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 12:20 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-13 Energy Efficiency

Ohio Adm.Code 4101:1-13-01 Energy efficiency.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-14 Exterior Walls

Ohio Adm.Code 4101:1-14-01 Exterior walls.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-15 Roofs

Ohio Adm.Code 4101:1-15-01 Roof assemblies and rooftop structures.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 12:31 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-16 Structural Design

Ohio Adm.Code 4101:1-16-01 Structural design.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 1:55 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-17 Special Inspections

Ohio Adm.Code 4101:1-17-01 Special inspections.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-18 Soils and Foundations

Ohio Adm.Code 4101:1-18-01 Soils and foundations.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 1:17 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-19 Concrete

Ohio Adm.Code 4101:1-19-01 Concrete.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-20 Aluminum

Ohio Adm.Code 4101:1-20-01 Aluminum.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-21 Masonry

Ohio Adm.Code 4101:1-21-01 Masonry.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 25, 2025 at 6:32 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-22 Steel

Ohio Adm.Code 4101:1-22-01 Steel.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-23 Wood

Ohio Adm.Code 4101:1-23-01 Wood.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-24 Glass and Glazing

Ohio Adm.Code 4101:1-24-01 Glass and glazing.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 25, 2025 at 6:33 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-25 Gypsum Board and Plaster

Ohio Adm.Code 4101:1-25-01 Gypsum board, gypsum panel products and plaster.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 25, 2025 at 11:40 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-26 Plastic

Ohio Adm.Code 4101:1-26-01 Plastic.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 26, 2025 at 5:46 AM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-27 Electrical Components, Equipment and Systems

Ohio Adm.Code 4101:1-27-01 Electrical.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-28 Mechanical Systems

Ohio Adm.Code 4101:1-28-01 Mechanical systems.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated June 26, 2025 at 3:48 AM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-29 Plumbing Systems

Ohio Adm.Code 4101:1-29-01 Plumbing systems.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 12:28 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-30 Elevators and Conveying Systems

Ohio Adm.Code 4101:1-30-01 Elevators and conveying systems.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-31 Special Construction

Ohio Adm.Code 4101:1-31-01 Special construction.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-32 Structures Encroaching the Public Right of Way

Ohio Adm.Code 4101:1-32-01 Encroachments into the public right-of-way.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 2:02 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-33 Safeguards During Construction

Ohio Adm.Code 4101:1-33-01 Safeguards during construction.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated May 29, 2024 at 12:08 PM

History

• Effective: March 1, 2024
• Promulgated Under: 119.03

Chapter 4101:1-34 Existing Structures

Ohio Adm.Code 4101:1-34-01 Existing buildings.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03

Chapter 4101:1-35 Referenced Standards

Ohio Adm.Code 4101:1-35-01 Referenced standards.

This rule was filed with the Legislative Service Commission in PDF format and is presented here as filed.

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Last updated October 15, 2025 at 1:02 AM

History

• Effective: October 15, 2025
• Promulgated Under: 119.03