The NBC 202:2015 — Guidelines on Load-Bearing Masonry provides recommended practices and minimum acceptable standards for the construction of load-bearing masonry buildings in Nepal, with a strong focus on earthquake-resistant design and structural safety. It is intended to guide safe construction practices in areas where formal engineering design may not always be available.
This guideline is primarily aimed at builders, masons, homeowners, and practitioners, as well as designers who work with low-rise masonry structures. It helps ensure that buildings are constructed with proper detailing and materials to improve performance during seismic events.
The document covers:
- Objective and Scope: Defines safe construction practices for non-engineered masonry buildings in seismic regions.
- Applicability: Generally suitable for low-rise buildings, typically up to two storeys, constructed using brick or stone masonry with cement mortar.
- Design and Construction Requirements: Includes guidance on wall thickness, layout of openings, foundation requirements, and basic structural proportions.
- Material and Mortar Specifications: Recommends appropriate material quality and mortar mixes for durability and strength.
- Reinforcement and Detailing: Provides rules for incorporating bands, ties, and other reinforcement elements to improve seismic resistance.
- Construction Detailing: Includes practical sketches and standard details to ensure proper execution on site.
The guideline emphasizes simple, practical, and cost-effective methods to improve the safety of masonry buildings. It does not replace detailed structural engineering design but serves as a minimum standard for common load-bearing masonry construction in Nepal’s seismic environment.
