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Glass Guardrail Solutions for Skybridge Canopies: Application Scenarios

For the glass used in the guardrails of overpass canopies, safety is paramount, with requirements for wind‑load resistance, fall protection, and weather durability. In Foshan and throughout South China, municipal overpasses generally follow a standardized approach: laminated glass is employed for the guardrails, while the canopy uses either tempered laminated glass or tempered glass combined with insulated glazing; thickness and structural specifications are strictly in accordance with JGJ 113 and DBJ/T 15‑271‑2024, as stipulated by the Guangdong Provincial Department of Housing and Urban–Rural Development.

Glass Guardrail Solutions for Skybridge Canopies: Application Scenarios

For the glass used in the guardrails of overpass canopies, safety is paramount, with requirements for wind‑load resistance, fall protection, and weather durability. In Foshan and throughout South China, municipal overpasses generally follow a standardized approach: laminated glass is employed for the guardrails, while the canopy uses either tempered laminated glass or tempered glass combined with insulated glazing; thickness and structural specifications are strictly in accordance with JGJ 113 and DBJ/T 15‑271‑2024, as stipulated by the Guangdong Provincial Department of Housing and Urban–Rural Development.
I. Guardrail Glass (Pedestrian Overpass)
✅ Mandatory standards (must be met)
Standards: JGJ 113‑2015, JGJ/T 470‑2019, Guangdong DBJ/T 15‑271‑2024, Guangdong Provincial Department of Housing and Urban–Rural Development
Type: Must be laminated (tempered laminated); single-layer tempered glass is strictly prohibited.
Height: ≥1.1 m; the lowest point of the glass is ≤5 m above the ground.
✅ Common configurations (Foshan Municipal / Overpass)
1) Conventional guardrails (framed / post-supported)
Specification: 8 mm + 1.52 mm PVB + 8 mm tempered laminated glass (total thickness 17.52 mm)
Requirements: Double tempered, PVB/SGP, 3C, fine edge grinding + chamfer ≥ 1 mm
Features: Shatters without detaching, fall‑prevention, impact resistance
2) Frameless all-glass guardrail
Specification: 12 mm homogeneous tempered glass (HST) or 10+1.52PVB+10 laminated glass
Restrictions: Maximum height above ground ≤ 5 m; professional securing required.
✅ Materials and Craftsmanship
Glass: Ultra-clear / Standard-clear tempered laminated; for high-rise buildings, SGP laminated glass is preferred (harder and more resistant to aging).
Film: PVB (1.52/2.28 mm) – Standard; SGP (0.76/1.52 mm) – High-end / Coastal
Edge: Fine grinding + chamfering, preventing chipping and hand cuts.
Certifications: 3C, Homogeneity (HST), Wind-Pressure Resistance / Watertightness / Air-Tightness Testing


Skybridge guardrail glass
II. Canopy Glass (Top of the Pedestrian Bridge)
✅ Core Requirements
Functions: light transmission, wind-pressure resistance, hail resistance, waterproofing, weather resistance, and fall protection.
Types: Tempered laminated (preferred), tempered insulated (thermal insulation), single‑pane tempered (low risk)
✅ Common configurations (Foshan / South China)
1) Conventional canopy (framed)
Preferred option: 8 mm + 1.52 mm PVB + 8 mm tempered laminated glass (safe and fall‑proof)
Alternative: 10 mm single-layer tempered glass (simple / short span)
Thermal insulation: 5+12A+5mm tempered insulated glass (sun protection, heat insulation)
2) Large-span / Cantilevered Canopy
Specification: 10+2.28PVB+10mm tempered laminated glass or 12+1.52SGP+12mm
Requirements: Wind pressure resistance ≥ 1.5 kPa, hail impact resistance, and sealant joint waterproofing.
✅ Key Considerations for Selection
Safety: Laminated glass is required in public areas to prevent objects from falling from height and to protect against flying debris.
Weather resistance: For coastal applications, SGP (salt-spray resistant, non-delaminating); for inland use, PVB is sufficient.
Waterproofing: Apply weather-resistant silicone sealant; ensure a slope of ≥3% to prevent water pooling.
Light Transmission: Ultra-white glass (light transmittance ≥ 91%), reducing green fringing.

 

Skybridge canopy glass
III. Common Combination Types Used in Local Construction Projects in Foshan
1) Standard Municipal Overpass (Recommended)
Guardrail: 8+1.52PVB+8mm tempered laminated glass, 3C+HST, with fine edge grinding.
Canopy: 8 mm + 1.52 mm PVB + 8 mm tempered laminated glass (safe and translucent)
Frame: 304 stainless steel / carbon steel with fluorocarbon coating
2) Economy‑class overpasses (for industrial parks / residential communities)
Guardrail: 6+1.52PVB+6mm laminated glass
Canopy: 10 mm single-layer tempered glass
Frame: Galvanized steel pipe
3) High-end scenic skybridge (landmark / commercial)
Guardrail: 10+1.52 SGP+10mm extra-clear laminated glass
Canopy: 10+1.52 SGP+10mm extra-clear laminated glass
Features: High transparency, no green fringing, aging resistance, and yellowing prevention.
IV. Common Misconceptions and Reminders
❌ Using only single-layer tempered glass: poses a risk of spontaneous breakage, and if shattered, can fall and cause injury—this is a violation.
❌ Guardrails made with ordinary glass: not impact-resistant; sharp shards can cause injury upon breakage.
❌ Ordinary glass used for canopies: prone to shattering under hail or typhoons, posing a risk of falling debris.
✅ Must-check: 3C certification mark, laminated film model number, and homogenization treatment report.