NBC 2016:2016 Part 5 is the Indian Standard (BIS) for national building code of india 2016 - building materials. Part 5 is the materials catalogue of NBC 2016. For every commonly used building material it identifies the reference IS specification, the permissible grades, acceptance tests, and storage requirements. It does not re-derive the specifications — it points to them and tabulates the properties a designer or site engineer typically needs at a glance. Coverage spans masonry (bricks, stone, blocks), binders (cement, lime, gypsum), concrete and its constituents, structural and reinforcing steel, timber and bamboo, paints and varnishes, glass, insulation, and miscellaneous finishes. For any material not covered in adequate depth, Part 5 points to the parent IS code for the full specification.
Guides the selection, testing, and acceptance of building materials - cement, aggregates, concrete, steel, timber, bricks, paints, glass, insulation, and finishes - with cross-references to the relevant IS specifications and test methods.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| High-Rise Building Definition Threshold | Building height ≥ 15 m | Building with an occupied floor > 75 ft (≈ 23 m) above lowest level of fire dept. vehicle access | IBC 2024 |
| Mandatory Refuge Area Requirement | Yes, for buildings > 24m, at 24m and then every 15m. Area is 0.3 m²/person or 15 m² min. | No specific prescriptive requirement; addressed by other means like evacuation elevators or additional stairwells. | IBC 2024 |
| Min. Corridor Width (Institutional/Hospitals) | 2.0 m for non-ambulatory patients; 2.4 m if for stretcher movement | 96 inches (≈ 2.44 m) in new healthcare occupancies | NFPA 101:2024 |
| Max. Travel Distance (Business Occupancy, Sprinklered) | 45 m | 300 ft (≈ 91 m) | NFPA 101:2024 |
| Fire Resistance of Exit Stair Enclosure (High-Rise) | 2 hours | 2 hours | IBC 2024 |
| Automatic Sprinkler Trigger (New Hotels) | Mandatory if height > 15 m | Required in all new hotels, regardless of height (with few exceptions for small buildings) | NFPA 101:2024 |
| Ramp Slope (Means of Egress) | Maximum 1 in 10 (10%) | Maximum 1 in 12 (≈ 8.3%) | IBC 2024 |