Santiago Fire Safety Compliance Under Chilean NCh 935 and Ordenanza General de Urbanismo
Santiago’s building code, as enforced by the Ordenanza General de Urbanismo y Construcciones (OGUC), establishes specific fire resistance requirements that vary by building height, occupancy type, and compartment size. For commercial and residential towers, particularly those exceeding 28 meters in height, the regulations typically mandate fire-rated assemblies capable of resisting fire for 60 to 120 minutes (F-60 to F-120). These requirements are technically validated through the NCh 935 standard, which aligns closely with international test protocols like ASTM E119 and BS 476.
Antifires fire-rated glazing systems are designed to meet these stringent local criteria. The products undergo testing under conditions that simulate real-world fire scenarios, including furnace temperatures exceeding 1000°C and positive pressure differentials. Key performance parameters include:
- Integrity (E): Resistance to flame penetration and hot gases, tested via cotton pad ignition and gap gauges.
- Insulation (I): Limiting temperature rise on the unexposed side to a maximum of 180°C (single point) and 140°C (average), crucial for preventing secondary ignition.
- Radiation (W): Control of radiant heat transfer, essential for egress pathways and proximity to combustible materials.
For example, a 28mm EI60 panel (6mm + 5.5mm gel + 5mm + 5.5mm gel + 6mm) achieves an integrity of 66 minutes and insulation of 64 minutes, fully satisfying the F-60 requirement for exit enclosures in Santiago’s high-rises. Similarly, the 50mm EI120 system provides 120 minutes of both integrity and insulation, suitable for critical fire compartments. This certified performance ensures that projects in comunas like Las Condes and Providencia receive prompt permitting approval.
Selecting Fire Rated Glass Grades: EI 60 vs EI 120 for Santiago’s Seismic and Thermal Conditions
The selection of the appropriate fire-rated glass grade for a Santiago project depends on the specific fire resistance time required by the OGUC and the building’s functional zone. For most commercial and residential towers, the two primary grades are EI 60 and EI 120, each addressing different risk profiles and compartmentation strategies.
| Grade | Typical Application | Glass Structure Example | Key Performance (Integrity / Insulation) |
| EI 60 | Internal partitions, stairwell enclosures, corridor doors | 28mm multi-layer (6+5.5+5+5.5+6mm) | 66 min / 64 min |
| EI 120 | High-rise facades, fire compartment walls, industrial warehouses | 50mm multi-layer insulated | 120 min / 120 min |
For Santiago’s specific seismic and thermal conditions, the choice of glass structure is critical. The intumescent gel layers within the glass expand under heat, forming an opaque, insulating barrier that also absorbs seismic movement. The frames, constructed from G.M.S. hollow steel sections with ceramic wool (3-6mm, density 210 kg/m³) and intumescent seals (20mm x 4mm), accommodate thermal expansion and building sway. For projects requiring fire rated glass in curtain walls or large-span facades, the EI 120 grade is recommended to meet both fire safety and structural performance. Architects and contractors can explore specific product configurations for 120-minute fire rated glass to ensure compliance with Santiago’s most demanding fire safety requirements.
Key Building Applications: Santiago High-Rise Facades, Metro Exits, and Industrial Warehouses
Certified fire-rated glazing from Antifires is deployed across a wide range of building types in Santiago, each presenting unique fire safety challenges. The primary application scenarios include:
- High-Rise Facades (Las Condes, Providencia): Exterior curtain walls and windows must resist fire spread between floors. The 50mm EI120 system provides 120 minutes of integrity and insulation, preventing vertical fire propagation and maintaining structural stability during a fire.
- Metro Exits and Public Transit Hubs: Egress pathways require high-integrity glazing to protect occupants during evacuation. The 26mm door glass (5+5.5+5+5.5+5mm) achieves 89-90 minutes of integrity, ensuring safe passage for up to 90 minutes.
- Industrial Warehouses and Logistics Centers: Large open spaces with high fire loads demand robust compartmentation. The 15mm FPOS glass (multi-layer tempered with intumescent gel) provides up to 132 minutes of integrity, suitable for fire doors and partitions in storage facilities.
- Internal Partitions in Office Buildings: Open-plan offices require transparent fire barriers that do not compromise natural light. The 21mm FPOS glass (multi-layer composite insulated) offers 120 minutes of integrity and 30 minutes of insulation, ideal for corridor and meeting room separations.
For each scenario, Antifires provides complete system solutions including steel frames, fire-rated insulation boards (12-15mm), ceramic tape, and intumescent seals. These components are pre-engineered to work together, ensuring consistent performance under test conditions. Contractors can specify 60-minute fire rated glass for standard internal applications and upgrade to higher ratings for critical zones.
Why Antifires: Local Stock in Chile, NCh Certification, and Technical Support for Santiago Projects
Antifires distinguishes itself in the Santiago market through a combination of local stock availability, certified compliance with Chilean standards, and dedicated technical support. Unlike many international suppliers, Antifires maintains inventory in Chile, enabling rapid delivery to construction sites across the Metropolitan Region, including Las Condes, Providencia, and Santiago Centro. This local presence reduces lead times and logistical complexities for time-sensitive projects.
Key advantages for Santiago-based projects include:
- NCh Certification Alignment: All products are tested to standards recognized by Chilean authorities, including NCh 935 and NCh 2137, ensuring seamless integration with local permitting processes.
- Technical Documentation: Antifires provides complete test reports, installation manuals, and system specifications that satisfy the documentation requirements of municipal building inspectors.
- Custom Fabrication: The company offers custom dimensions for doors, windows, and partitions, accommodating the unique architectural designs common in Santiago’s high-end residential and commercial towers.
- On-Site Support: Experienced technical staff are available to assist with installation guidance, ensuring that the fire-rated assemblies are correctly installed to maintain their certified performance.
For projects requiring 90-minute fire rated glass, Antifires can supply both integrity-only and insulated options, tailored to the specific fire resistance time required by the OGUC. This combination of local stock, certified compliance, and technical expertise makes Antifires a reliable partner for Santiago’s growing construction sector.