What Is the Typical Thickness of GRC Panels for Curtain Walls? Thickness Design and Qinglong Group Optimization Guidelines

The thickness design of GRC panels for curtain walls must comprehensively consider multiple factors such as panel dimensions, wind load, shape complexity, and location of use. Standard flat panels are typically 15-20mm thick, shaped panels can reach 20-30mm, and special oversized panels need to be thickened to 30-50mm. Based on 28 years of mechanical calculation and engineering practice, Qinglong Group has established a scientific set of thickness optimization guidelines: for standard curtain wall panels (panel size ≤2.4m×1.2m), in areas with a basic wind pressure of 0.5kN/m², a 15mm thickness is sufficient to meet wind pressure resistance requirements; for complex shapes such as double-curved and openwork panels, the thickness must be increased to over 20mm to ensure rigidity; for special locations such as cantilevers and cornices, the optimal thickness must be determined through finite element analysis. In the wave roof project of the Hainan International Convention and Exhibition Center, through optimized calculation, we controlled the thickness of roof panels covering 120,000 square meters at 18mm, achieving both structural safety and a 40% weight reduction.

Thickness determination requires scientific calculation. Qinglong Group uses finite element software for load analysis, calculating the stress and strain of panels under wind load, earthquake, and temperature effects. We require that the maximum deflection under normal service conditions be ≤L/250, with a safety factor of ≥2.5 under ultimate conditions. In the double-curved curtain wall design for the Nanning Wuxiang China Resources MixC One, through parametric form-finding, panel thickness was optimized to 16mm, saving 20% in materials.

The production process affects thickness selection. Our production lines can stably manufacture panels from 12-50mm thick, with thickness tolerance controlled within ±1mm. For ultra-thin panels (≤12mm), stiffening ribs must be added to ensure rigidity; ultra-thick panels (≥30mm) require layered casting to prevent cracking. We recommend consulting a professional manufacturer on thickness selection to avoid being overly conservative or risky.

Through thickness optimization, Qinglong GRC panels achieve the optimal balance between safety and economy. We can provide customers with dedicated calculation reports to ensure that thickness design is scientifically sound and reasonable.