Packaging and Storage of Steel Structures

Steel structure plays an extremely important role in modern construction and industry. Whether it is large bridges, skyscrapers, or industrial plants, the quality and integrity of steel structures directly affect the safety and durability of the whole project. Reasonable packaging and storage is the key link to ensure that the steel structure is not damaged or deteriorated during transport and storage, which has far-reaching significance for its subsequent installation and use.

1.Packaging

In terms of packaging, first of all, the steel structure components should be carefully classified. According to the type of components, such as steel beams, steel columns, connectors, etc. to distinguish, and then further refine the grouping according to the size and specifications. For example, steel beams of the same type and similar length are grouped together, which helps to improve the order and efficiency of packaging. Classified components one by one number, the number needs to be conspicuous and lasting, can be used in the components of the conspicuous part of the steel seal, and with the design drawings and delivery lists correspond accurately, so that in the transport, installation and other aspects of the rapid and accurate identification.

The selection of protective packaging materials is crucial. For small parts such as bolts and nuts, plastic film or sealed plastic bags are ideal, which can effectively isolate air and moisture and prevent rust. For large components such as steel beams and columns, wood, plywood or sheet metal are often used for overpacking. Rubber mats, foam and other cushions are placed between the components and packaging materials to reduce surface damage caused by collision and friction during transport. If the components have galvanised, painted and other special surface treatments, it is also necessary to add moisture-proof paper or plastic film in the inner layer of the package to prevent damage to the coating during packaging.

Packaging methods also vary according to the components. Slender steel beams can be strapped with steel or nylon straps, with protective pads to avoid strangulation marks, and to ensure that the strapping is secure. Large flat components such as foot plates, is suitable for wooden box packaging, components in the box, surrounded by padding fixed, wooden box size customised according to the size of the components and to have enough strength to withstand transport pressure and impact.

2.Storage

The choice of storage site has many points. Should choose a high, dry and well-ventilated place, to prevent water and moisture, the site floor needs to be hardened, such as pouring concrete or paving asphalt, to avoid direct contact between the components and the ground moisture and rust. At the same time, to stay away from corrosive gases or liquids in the area, such as can not be avoided, it is necessary to build a protective shed, set up isolation zones and other protective measures.

Component storage should be installed according to the order and type of zoning storage. Large steel columns, steel beams and other major components should be placed flat, leaving enough space between the components for handling and inspection, the following matting placed at intervals of 2 – 3 metres, so that the components and the ground apart. Small parts such as bolts, nuts, etc. can be stored in the warehouse shelves, according to the specifications of the type of classification placed.

Storage management is indispensable. Establish a detailed storage record, covering information such as component number, time of entry, location of storage, inspection status, and so on. Regularly check the stored steel structure to see whether there is any damage to the appearance, whether the coating is peeling off, whether there is any deformation, etc., and repair or replace it in time when problems are found. In addition, fire and theft should be guarded against during storage. Obvious warning signs, such as ‘fireworks are strictly prohibited’, are set up around the site, and fire-fighting equipment and monitoring equipment and other safety protection facilities are equipped to ensure the safety and integrity of the steel structure during storage.