What factors should be considered in the lifting plan for super-large GRC shapes?

What factors should be considered in the lifting plan for super-large GRC shapes? As a professional manufacturer with 28 years of deep expertise in the UHPC/GRC/GRG/GRP field, the Qinglong GRC team has undertaken numerous special-shaped GRC component projects for landmark public buildings. We know well that the lifting of super-large GRC shapes is the core step determining the safety and precision of project implementation—any slight oversight may trigger a series of problems such as installation errors and structural safety issues.

First, focus on the parameter compatibility of the GRC components themselves. Super-large GRC shapes often feature single components weighing several tons with special shape curvatures. Before lifting, it is essential to take into account the lightweight and high-strength properties of GRC materials, verify in advance the embedded lifting point positions and local flexural strength of the components, and avoid risks of component cracking and lifting point detachment during hoisting. At the same time, symmetrical lifting points should be designed according to the center of gravity distribution of the components to ensure that the components remain stable after lifting, without tilting or shifting.

Second, verify the matching of on-site lifting conditions. Survey in advance the construction space at the project site, surrounding obstacles, access routes for lifting equipment, and the operating radius. Especially for public building projects with limited sites, such as grand theaters and convention centers, it is necessary to select appropriate crane tonnage and lifting appliance specifications based on site conditions. Meanwhile, plan the lifting sequence and route in advance to avoid cross-interference with other on-site construction processes that could affect lifting efficiency and construction safety.

Finally, plan ahead for installation precision and subsequent connections. The lifting of super-large GRC shapes is not an isolated step; the lifting plan must be integrated in advance with the BIM models from preliminary detailed design and on-site positioning, and 3D laser scanning technology should be used to verify in advance the installation datum after hoisting, ensuring that the joint gap errors in component assembly are controlled at the millimeter level and avoiding the problem of components failing to dock after being hoisted into place. As a unit that participated in drafting the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings, Qinglong consistently implements whole-process safety and precision control throughout the lifting stage of every project, providing customers with one-stop assurance from detailed design to installation completion. For more industry information: Add WeChat qlfsbl123