North Carolina State Building Code: Plumbing Code 2018- Loose Leaf

The 2018 North Carolina State Building Code: Plumbing Code (NCPC 2018) is a comprehensive set of regulations governing the design, installation, and maintenance of plumbing systems in buildings throughout North Carolina. It is based on the 2015 International Plumbing Code (IPC) with state-specific amendments to address local conditions and requirements.

Key Aspects:

Scope and Application

• Applies to the erection, installation, alteration, repair, relocation, replacement, addition to, use, or maintenance of plumbing systems within North Carolina.
• Regulates sanitary and vacuum collection systems.
• Excludes detached one- and two-family dwellings and townhouses not more than three stories high with separate means of egress and their accessory structures, which shall comply with the International Residential Code.
• Provisions in the appendices shall not apply unless specifically adopted.
  

General Regulations

• Materials used shall be installed in strict accordance with the standards under which the materials are accepted and approved.
• All plumbing products and materials shall be listed by a third-party certification agency as complying with the referenced standards.
• Plumbing systems shall be designed and installed to prevent rodents from entering structures.
• Piping shall be protected against external corrosion by a protective sheathing or wrapping or other means that will withstand any reaction from the lime and acid of concrete, cinder, or other corrosive material.

Fixture Requirements

• Plumbing fixtures shall be constructed of approved materials, with smooth, impervious surfaces, free from defects and concealed fouling surfaces.
• The maximum water flow rates and flush volume for plumbing fixtures and fixture fittings shall comply with Section 604.4.
• Water closets having a concealed trap seal or an unventilated space or having walls that are not thoroughly washed at each discharge in accordance with ASME A112.19.2/CSA B45.1 shall be prohibited.
• The supply lines and fittings for every plumbing fixture shall be installed so as to prevent backflow.
  

Water Supply and Distribution

• The water service pipe shall be sized to supply water to the structure in the quantities and at the pressures required in this code.
• Where water service piping is located in the same trench with the building sewer, such sewer shall be constructed of materials listed in Table 702.2.
• Where the building sewer piping is not constructed of materials listed in Table 702.2, the water service pipe and the building sewer shall be horizontally separated by not less than 5 feet (1524 mm) of undisturbed or compacted earth.

Highlights:

• Based on the 2015 International Plumbing Code (IPC), with NC-specific amendments
• Water Heaters (Chapter 5–6)
• Underground Replacement by Pipe‑Bursting (Section 717)
• Nonpotable & Purple‑Tagged Systems (Chapters 13–14)

About ICC

International Code Council is a leading organization dedicated to developing a single set of comprehensive, coordinated national model construction codes. To date, 48 U.S. states have adopted various international codes from the International Code Council.

Other Works:

• North Carolina State Building Code: Residential Code 2018 – Loose Leaf
• North Carolina State Building Code: Building Code 2018 – Loose Leaf
• North Carolina State Building Code: Fuel Gas Code 2018 – Loose Leaf