GB/T 39806-2021 in English
VALIDSafety performance evaluation of suspended floor,stairs, trail and plank road glass
- Issued on:2021-03-09
- Implemented on:2022-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$165.00
| Standard No: | GB/T 39806-2021 |
| Document status: | VALID |
| Title in English: | Safety performance evaluation of suspended floor,stairs, trail and plank road glass |
| Title in Chinese: | 悬空地板、踏步、步道及栈道玻璃安全性能评价 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2021-03-09 |
| Implemented on: | 2022-02-01 |
| ICS Classification: | 81.040.20-Glass in building |
| Chinese Classification: | Q33-Building glass |
| Professional Classification: | GB-National Standard |
| Related Keywords: | floor glass plank road glass key
plank road glass zhangjiajie glass plank road plank glass plank road glass introduction interpretation |
| Related Topics: | performance evaluation
step by step performance evaluation glass floor Step and Plank glass GBT39806 GB/T 39806-2021 GB/T 39806-2021 Glass step load-bearing Evaluation of ballistic performance |
《GB/T 39806-2021悬空地板、踏步、步道及栈道玻璃安全性能评价》由TC255（全国建筑用玻璃标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
Interpretation of the core content of the standard
This standard systematically regulates the full life cycle safety evaluation system of suspended floor glass, step glass and plank glass for the first time. It focuses on the special use scenarios of high-altitude transparent carriers and establishes a two-stage evaluation mechanism before and after installation.
Key technical requirements
| Evaluation dimensions | Suspended floor glass | Plank road glass | Key differences |
|---|---|---|---|
| Structural composition | ≥2 layers of glass (8mm tempered surface) | ≥3 layers of glass (8mm tempered surface) | Plank road needs to add a protective layer |
| Thickness of intermediate film | ≥1.52mm (PVB/ion membrane/EVA) | Uniform requirements | |
| Dynamic load | Indoor environment | Harsh outdoor environment | Plank roads require additional evaluation |
Analysis of implementation points
Items that must be checked before installation
- Thickness deviation: Use an outside micrometer to check, which should comply with the allowable range of GB/T38784
- Edge burst control: Edge burst depth ≤ 1/3 of thickness, length ≤ 10mm/meter
- Compatibility test: Chemical compatibility verification of adhesive and interlayer
Key monitoring after installation
- New scratches ≤ 2 lines/block, width < 0.2mm
- Structural integrity under dynamic load
- Extension of edge cracks
Technology Evolution Analysis
This standard has the following major improvements over the previous version: 1) It is clarified that the three-layer structure is a mandatory requirement for plank road glass; 2) ionic interlayer is added as an optional material; 3) Dynamic load is included in the mandatory inspection items. These revisions are based on the practical experience of projects such as the Zhangjiajie Glass Plank Road.
Common Risk Warning
Typical Unqualified Case: A scenic spot used a two-layer structure for plank road glass, and the interlayer delamination occurred under temperature difference stress. According to clause 5.1.1 of this standard, a three-layer structure configuration must be adopted.
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