Type of structure: Analyze the overall design and height of the scaffolding. Taller and more complex structures will impose greater loads on the couplers.

Materials to be supported: Take into account the weight of the construction materials, workers, and any equipment that will be placed on the scaffolding. For example, if heavy machinery or large amounts of building materials will be used, higher load-bearing capacity couplers are needed.

Environmental factors: Consider wind loads, vibrations, and other external forces that may act on the scaffolding. In areas with strong winds or where there is potential for impact, stronger couplers with higher load-bearing capacities should be selected.

Safety margin: Always add a suitable safety margin to account for unexpected loads or variations in usage conditions. This helps ensure the stability and safety of the scaffolding. Refer to industry standards and guidelines for recommended safety factors.

Calculations and engineering assessments: In some cases, it may be necessary to perform structural calculations or consult with an engineer to accurately determine the required load-bearing capacity based on the specific project parameters.