The National Building Code of India (NBC) is the primary Indian standard for building codes, published by the Bureau of Indian Standards (BIS)

 The National Building Code of India (NBC) is the primary Indian standard for building codes, published by the Bureau of Indian Standards (BIS). It provides comprehensive guidelines for the planning, design, construction, and maintenance of buildings to ensure safety, functionality, and sustainability. The code is divided into 13 parts and is the basis for local building bylaws, with the latest version being NBC 2016, and a 2025 revision currently available for public feedback. 

Key aspects of the NBC

Safety: The code focuses on four pillars of safety: structural, fire, health, and public safety. It includes provisions for earthquake and cyclone resistance.

Accessibility: NBC 2016 includes provisions for barrier-free environments for persons with disabilities and the elderly.

Streamlined processes: It aims to streamline the approval process through a single-window approach and computerization.

Structural design: The code provides guidelines for structural safety, using various materials like concrete, steel, and timber, and includes provisions for disaster-resilient buildings.

Sustainability: It promotes sustainability through provisions for energy efficiency, rainwater harvesting, and waste management.

Building and plumbing services: The NBC contains comprehensive guidelines for electrical installations, air conditioning, lighting, ventilation, and plumbing services, including updated provisions for high-rise buildings and complexes. 

How to use the code

The NBC is a voluntary document, but states and local bodies are expected to adopt its provisions into their own building bylaws, making them mandatory for all construction activities.

The code serves as a model for local authorities and professionals to regulate construction activities within their jurisdictions.

It is intended for use by various stakeholders, including construction departments, local bodies, professionals, and academic institutions. 

Relevant Indian Standards (IS Codes)

While the NBC provides a comprehensive framework, it integrates various specific Indian Standards (IS Codes) for different aspects of construction. Examples include: 

IS 456:2000: For plain and reinforced concrete.

IS 1893: For earthquake-resistant design.

IS 800: For general construction in steel.

IS 3370: For concrete structures for the storage of liquids.