What Is the Typical Thickness of GRC Panels for Curtain Walls?

The conventional thickness of GRC panels for curtain walls ranges from 15-30mm, while special scenarios (extra-large areas, strong winds at high altitude, irregular shapes) require 30-50mm. The choice mainly depends on panel area, load conditions, and shape complexity. Through material optimization and structural design, Qinglong achieves lightweight panels while ensuring strength: 15mm-thick standard panels can meet the needs of most low-to-mid-rise projects, and the thickness choices of multiple landmark projects have proven their rationality.

1. Conventional Thickness of GRC Panels for Curtain Walls: 15-30mm

Conventional thicknesses center on lightweight design and economy. Basic thickness 15-20mm: suitable for low-to-mid-rise curtain walls (≤10 floors) with single-panel area ≤3m² and wind pressure ≤0.5kPa, such as interior decorative walls and exterior walls of low-rise commercial buildings. Qinglong's 15mm-thick GRC panels for Wuhan Han Show Theatre feature complex carved surface patterns while still meeting strength requirements. Common thickness 20-25mm: suitable for mid-rise curtain walls (10-20 floors) with single-panel area of 3-6m² and wind pressure of 0.5-0.8kPa, such as exterior walls of mid-rise office buildings and hotels. Qinglong's 22mm-thick GRC curtain wall for Shenzhen Longhua Xiangshan Science and Technology Park covers nearly 20,000m², balancing strength and lightweight design. Reinforced thickness 25-30mm: suitable for mid-high-rise curtain walls (20-30 floors) with single-panel area of 6-10m² and wind pressure of 0.8-1.2kPa. Qinglong's 28mm-thick GRC cladding panels for Qiangwei Garden in Zengcheng, Guangzhou have a single-panel area of 8m² and meet wind load performance standards.

2. Thickness of GRC Panels for Special Scenarios: 30-50mm

Special requirements call for increased thickness to ensure structural stability. Extra-large panels: when single-panel area exceeds 10m², the thickness is 30-40mm, with added thickness improving flexural rigidity. Qinglong's roof GRC panels for Hainan International Convention and Exhibition Center cover 120,000m², with a single-panel area of 12m² and a thickness of 35mm, free of deformation or cracking. High-altitude strong wind environments: in coastal and high-altitude strong wind areas (wind pressure ≥1.2kPa), the thickness is 35-45mm to enhance wind load and negative pressure resistance. Qinglong's GRC curtain wall for Hainan Changying Global 100 Fantasy Park is 40mm thick, with wind load resistance reaching 1.5kPa. Irregular-shaped panels: double-curved, twisted, and hollowed-out panels are 40-50mm thick to compensate for strength loss caused by complex shapes. Qinglong's double-curved GRC panels for Guangxi New Media Center are 45mm thick, and the strength of twisted sections meets requirements. Heavy decorative panels: heavy GRC panels with relief carvings and sculpted patterns are 45-50mm thick. Qinglong's colored GRC panels for Yulin Darongshan Church feature intricate relief work at 48mm thick, lightweight yet high in strength.

3. Key Factors in Thickness Selection

Thickness selection requires comprehensive consideration of three key factors. Single-panel area: for every 5m² increase in area, thickness increases by 5-10mm; Qinglong's 3m² panels are 20mm thick, while 10m² panels are 35mm thick. Load conditions: the greater the wind load, seismic action, and snow load, the greater the required thickness; coastal areas require 5-10mm more thickness than inland areas. Shape complexity: double-curved, hollowed-out, and relief-carved shapes require 10-15mm more thickness than flat panels; Qinglong's flat curtain wall panels are 20mm thick, while double-curved curtain walls of the same area are 30-35mm thick. Qinglong's thickness optimization solution: by increasing fiber content (2.5-3.0%) and optimizing aggregate gradation, strength can be improved by 20% at the same thickness, achieving the design goal of "thin yet strong".