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

The thickness design of GRC panels for curtain walls requires comprehensive consideration of architectural requirements, structural loads, and fabrication processes. Based on 28 years of engineering practice, Qinglong Group divides GRC panel thickness into three ranges: standard flat panels 15-20mm, shaped panels 20-25mm, and special-function panels 25-30mm, with the specific thickness determined by panel size, geometry, and loading.

The thickness of standard flat panels is typically 15-20mm. In the Shenzhen Yirui Biotechnology Building project, Qinglong Group adopted 18mm thickness for 1.2m×3m standard panels, meeting strength requirements while controlling weight. Panel thickness selection must be verified through calculation to ensure that deflection under wind load does not exceed L/200. For larger panel sizes, thickness should be appropriately increased or stiffening ribs added.

The thickness of shaped panels requires special consideration. Double-curved panels are typically increased to 20-25mm due to their geometric requirements. In the Guangxi New Media Center project, double-curved panels were 22mm thick, ensuring both geometric precision and sufficient stiffness. Perforated panels require appropriately increased thickness because openings weaken the cross-section; the perforated panels in the Algeria Hotel project reached 25mm thick.

Special-function panels require thicker sections. Insulation-decorative integrated panels can exceed 30mm in thickness due to the need to accommodate the insulation layer. Thicker designs are also adopted where higher sound insulation performance is required. Qinglong Group optimizes panel thickness through finite element analysis, controlling material usage while meeting performance requirements.

Panel thickness tolerance requires strict control. Qinglong Group's corporate standard requires a thickness tolerance of ≤±1.5mm to ensure installation flatness. Through scientific thickness design, GRC curtain walls can meet functional requirements while achieving optimal economy.