How to Set Up Temporary Supports During GRC Panel Installation? Safe Construction Standards

Temporary supports for GRC panel installation must follow the principles of "adequate strength, reliable stability, and reasonable spacing," with the core goal of ensuring no deformation or overturning during installation. Qinglong develops differentiated support schemes based on panel type (flat panels, double-curved panels, large-size panels), achieving safe installation on projects such as the Guangxi New Media Center and Guangzhou Dongzhu Shangdu.

1. Core Principles for Temporary Support Setup

Follow these principles to ensure effective support. Strength requirement: the support structure's bearing capacity must be ≥1.5 times the self-weight of the GRC panel; Qinglong supports use Q235B steel, with a capacity of 2.0 times the self-weight. Stability requirement: horizontal tie bars and diagonal braces are set to prevent lateral tipping; Qinglong braces are at an angle of 45–60°, with one horizontal tie bar every 3 meters. Spacing requirement: flat panel support spacing ≤800mm; double-curved or large-size panels (>3m) spacing ≤500mm; Qinglong's 6m-long GRC panels use a support spacing of 400mm. Flatness requirement: support top surface flatness ≤2mm/m to ensure a flat panel surface after installation; Qinglong uses adjustable supports with flatness error ≤1mm.

2. Temporary Support Schemes for Different Scenarios

Supports are designed differently for each installation scenario. Ceiling GRC panels: full scaffolding + adjustable screw jacks, with rubber pads on top of the jacks to avoid damaging the panels; in Qinglong's Zhuhai Chimelong ceiling project, full scaffolding spacing is 600mm and jack density ≥2 per ㎡. Exterior wall GRC panels: steel brackets + diagonal tie rods fixed to the main structure; for Qinglong's Shenzhen Longhua Xiangshan Science and Technology Park exterior walls, steel bracket spacing is 700mm, with 2 diagonal tie rods per panel. Large-size/double-curved panels: custom steel cradles + multi-point supports; for Qinglong's double-curved GRC panels at the Guangxi New Media Center, the custom cradles are designed to the curved profile with support point spacing of 400mm, ensuring precise curved forming. Small moldings/components: simple brackets + rope securing; for Qinglong's GRC window surround moldings at Zhongshan Kaiyin New Town, bracket spacing is 600mm with diagonal rope fixing.

3. Qinglong's Installation Standards and Safety Assurance

Standardized processes ensure support safety. Support verification: load-bearing verification is performed before installation and a dedicated plan issued, signed and confirmed by Qinglong's structural engineers to ensure feasibility. Material inspection: support steel and couplers must meet national standards; Qinglong tests all support materials before they enter the site, and substandard products are strictly prohibited. Installation monitoring: spirit levels and laser rangefinders monitor support flatness and stability in real time; on Qinglong's Guangxi New Media Center project, inspections are carried out once per hour during installation. Removal timing: supports are removed after the GRC panel fasteners are installed and the adhesive has reached its design strength (≥70%); Qinglong performs strength testing before removal to ensure there are no safety hazards. Project case: GRC cladding panels at Guangzhou Dongzhu Shangdu Commercial City, using a multi-point hanging structure with temporary supports of full scaffolding + custom steel brackets; not a single panel deformed during installation, with installation accuracy reaching ±2mm.