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Internal fire spread – Structure
35NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
A building shall be so designed and constructed that, in the event of a fire, its stability will be retained for a reasonable period. (2) A wall common to two or more buildings shall be so designed an
fire-safetystructuraldwellingnon-domesticTable 4.2: Minimum periods of fire resistance
Table 4.2NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
Table 4.2 Minimum periods of fire resistance Purpose group of building | Minimum period (minutes) for elements of structure and other components of the building forming part of Basement storey+ inclu
fire-safetystructuraldwellingflatscommercialindustrialnon-domestichrbhigh-riseNotes to fire resistance table for car parks
Table 4.2 (Notes)NI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
+ The floor over a basement (or if there is more than one basement, the floor over the topmost basement) should meet the provisions for the ground and upper storeys if that period is higher. * Increas
commercialfire-safetystructuralnon-domesticAppendix C: Publications Referred To
Appendix CNI-wide·Amendments Booklet AMD 9 2025 (Booklets E R)
BS EN ISO 306: 2004 Plastics. Thermoplastic materials. Determination of Vicat softening temperature (VST). BS EN ISO 1182: 2020 Reaction to fire tests for products. Non-combustibility test. BS EN IS
fire-safetymeans-of-escapestructural