IS 8274:1992 Part 1 is the Indian Standard (BIS) for fire resistant structures - general principles. This standard lays down the general principles for the design of fire-resistant structures. It defines key terminology like fire load and fire resistance rating, and outlines the criteria (stability, integrity, insulation) used to evaluate the performance of structural elements during a fire.
Provides general principles for the design and construction of fire-resistant building structures and elements.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Primary Unit for Fire Resistance | Hours (e.g., 1 h, 2 h, 4 h) | Minutes in R/E/I format (e.g., REI 60, REI 120) | EN 1991-1-2 |
| Unit of Fire Load Density | kilocalories per square metre (kcal/m²) | Megajoules per square metre (MJ/m²) | EN 1991-1-2 |
| Construction Classification System | Not in IS 8274; described in the National Building Code of India (NBC) as Type 1, 2, 3, 4 | Types I, II, III, IV, V with subclasses (e.g., I-A, II-B) | NFPA 220 |
| Standard Fire Curve Equation | Implied via reference to test standards | T = 345 log10(8t + 1) + 20 (where T is temp in °C, t is time in minutes) | EN 1991-1-2 (from ISO 834) |
| Approach to Design | Prescriptive principles | Prescriptive, risk-based, and performance-based engineering solutions | BS 9999 |
| Australian FRL criteria | Not applicable; uses a single hourly rating. | Three criteria: Structural Adequacy / Integrity / Insulation (e.g., 120/120/120) | NCC 2022 |