About This Book
The South Carolina Mechanical Code 2021 is the state's official regulatory standard governing the design, installation, maintenance, and inspection of mechanical systems in residential, commercial, and industrial buildings.
Key Details
- Base Document: Derived from the 2021 International Mechanical Code (IMC) with state-specific amendments addressing local environmental and construction requirements.
- Effective Date: January 1, 2023.
- Official Access: Full text is available through the ICC Digital Codes South Carolina Library; individual chapters can be searched on UpCodes South Carolina Mechanical Code.
Major Code Chapters & Scope
- Chapters 1–2: Administration, permitting, inspections, and definitions.
- Chapter 3 – General Regulations: Appliance clearances, condensate drainage (minimum 1% slope, ¾-inch drain sizing), and structural protections.
- Chapters 4–5 – Ventilation & Exhaust Systems: Indoor airflow requirements, kitchen grease hoods, and clothes dryer venting.
- Chapters 6–10 – Systems & Equipment: Duct systems, combustion air, chimneys, specific appliances, and boilers/water heaters.
- Chapters 11–14 – Specialized Systems: Refrigeration, hydronic piping, fuel oil piping, and solar thermal systems.
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Practice Tests Using This Book
This book is required or recommended for 3 licensing exams. We've written 78 practice questions directly from this material, each one citing the chapter and section it comes from.