Small Unit Building Curtain Wall Components
1Key Takeaways
The "Small Unit Building Curtain Wall Components" is now approved as a product standard for the construction industry, numbered JG/T216-2024, and will be implemented from August 1, 2024. The original "Small Unit Building Curtain Wall" (JG/T216-2007) is abolished at the same time. This standard is published on the Minis…
2Expert Interpretation
Professional interpretation of JG/T 216-2024 Small Unit Building Curtain Wall Component Standard, covering core technical points such as classification marking, material requirements, structural design, test methods, etc., compared with the updated content of the 2007 version of the standard, and providing guidance on the implementation of curtain wall projects.
Background of Standard Revision and Technological Evolution
As an industry standard for the construction industry, JG/T 216-2024 has comprehensively upgraded the 2007 version, mainly reflecting three major directions of technological evolution:
| Technical Dimensions | 2007 Version | 2024 Version | Update Highlights |
|---|---|---|---|
| Material Range | Glass/Metal/Stone | New Ceramic/Ceramic/Microcrystalline Glass | Expanded Application of Artificial Boards |
| Structural Safety | Requirements for Foundation Anti-falling | Mandatory noise-proof structure + anti-slip measures | Improve safety of use |
| Testing system | General physical properties | Refine sealant component testing | Strengthen material reliability |
Analysis of core technology innovation
1. Classification system upgrade
The new standard establishes a three-dimensional classification matrix:
- Panel materials: 6 categories (newly added porcelain panels/ceramic panels/microcrystalline glass panels)
- Attached frame connection: 8 combinations (full-length/short attached frame × 4 connection methods)
- Structural form: hidden frame/semi-hidden frame/exposed frame
Application case: A super high-rise project uses BL-CJ-BY glass curtain wall components, and achieves a 30% improvement in wind pressure resistance through the full-length frame structural adhesive connection
2. Key material requirements
| Material category | Technical indicators | Test basis |
|---|---|---|
| Silicone structural adhesive | Alkane plasticizer ≤0.1% | GB/T 31851 |
| Insulating glass sealing | Dual-channel sealing system | JC/T 914+GB 24266 |
| Metal fasteners | A4 grade stainless steel | GB/T 1220 |
3. Strengthening structural safety
- Anti-falling design: Hook overlap depth ≥8mm+retractable pad
- Noise control: Anti-friction rubber strips (Shore hardness 50±5) are mandatory
- Glass support strips: Support system must be set when span＞900mm
Project implementation suggestions
- Material selection: Homogeneous tempered glass + silicone strip combination is preferred
- Connection verification: Structural adhesive needs to undergo a three-in-one test of adhesion/compatibility/pollution
- Installation control: Laser positioning is used to ensure the accuracy of hook overlap (tolerance ±1.5mm)
- Acceptance focus: Check the implementation of the noise-proof structure and the continuity of the sealant