What principles should be followed when stacking components?

GRC component stacking must follow four core principles: "classified stacking, even load distribution, moisture and sun protection, safety and stability". Through standardized stacking management, Qinglong keeps the damage rate of components during transportation and prior to installation below 0.2%, and projects such as the Nanning Liyuan Hotel and Guangzhou Xinghewan have achieved zero stacking damage.

I. Classified Stacking Principle: Avoiding Damage from Mixed Stacking

Classified management ensures targeted protection for components. Classification by type and specification: components of different shapes (flat panels, Roman columns, reliefs) and different sizes are stacked separately to prevent shaped components from crushing flat panels; Qinglong sets up dedicated stacking zones by "component type + size specification" with clear signage. Classification by installation sequence: based on installation progress at the construction site, components to be installed soon are stacked in areas close to transportation routes to reduce secondary handling; Qinglong adopts a "first to install, first out of warehouse" stacking logic, improving handling efficiency by 40%. Classification by quality status: qualified components, components pending inspection, and components under rework are isolated in separate zones to prevent unqualified components from entering the installation process; Qinglong's stacking zones are equipped with quality identification signs and clearly defined sections.

II. Even Load Distribution Principle: Preventing Local Compression Deformation

Proper support ensures balanced loading of components. Stacking site requirements: select flat, solid ground and lay a 100mm thick gravel base plus 50mm thick wooden boards to prevent components from tilting due to ground settlement; the flatness of Qinglong's stacking sites is ≤2mm/m. Support point placement: support points are set according to the load-bearing characteristics of components, with support point spacing for flat panels ≤1.5m, and support points for shaped components aligned with the load-bearing core areas; support materials are wooden battens or rubber pads (thickness ≥50mm) to avoid sharp support points crushing components; Qinglong adopts the "three-point support method" for even loading without deformation. Stacking height limits: flat panels are stacked to a maximum of 3 layers, with rubber pads laid between each layer; stacking of shaped components is prohibited, and they are stored upright in a single layer; Qinglong strictly controls stacking height according to component thickness, with a maximum of 5 layers (thin components ≤3 layers).

III. Moisture and Sun Protection, and Safety and Stability Principles: Safeguarding Component Performance

Environmental protection and safety controls prevent component damage. Moisture protection: when stacked outdoors, components are elevated ≥300mm above the ground away from ground moisture, and covered on top with waterproof tarpaulin (waterproof rating ≥IPX5); Qinglong's outdoor stacking areas have a drainage slope ≥3% to prevent soaking from standing water. Sun protection: avoid direct sunlight, as ultraviolet exposure easily causes surface aging and sanding; Qinglong builds shade canopies (shading rate ≥90%) over stacking areas or covers components with geotextile for sun protection. Safety and stability: a 10-15cm gap is reserved between components during stacking to facilitate ventilation and handling; protective railings or warning signs are installed, and collisions are prohibited; Qinglong secures tall components with diagonal braces to prevent tipping, and unauthorized personnel are prohibited from entering stacking areas.