Steel structure projects are not simply "steel accumulations", and their characteristics profoundly affect the management logic of project managers:

Uniqueness: Each project is a "customized model". The woven grid of the Bird's Nest and the free-form roof of the Daxing Airport require project managers to abandon "empiricism" and customize management plans according to the characteristics of the project.

One-time: The project cannot be copied, and every link from construction to completion cannot be repeated. A gymnasium project was delayed by 20 days due to a mistake in the hoisting plan, with a direct loss of more than 8 million yuan, which confirms the cruel reality of "one careless move and the whole game is lost".

Integrity: Steel columns, steel beams, and node plates are linked together. Removing any support may trigger a chain reaction. Project managers need to establish a systematic thinking and coordinate the collaborative work of structures, electromechanical, decoration and other professionals.

Fixed: The project location cannot be moved, and geological conditions (such as coastal projects require anti-corrosion design) and transportation routes (road permits are required for transportation of super-long components).

Uncertainty: Variables such as steel price fluctuations (annual fluctuations can reach ±20%) and extreme weather (typhoons cause high-altitude operations to stagnate) require project managers to have the ability to predict risks.

Irreversibility: Once key processes such as welding and pouring are completed, the cost of rework increases exponentially. For a high-rise project, the cost of rectification was as high as 15% of the original cost due to a 3cm deviation in the positioning of the steel beam.