The most important stage of construction involving metal structures is their assembly. Every part of the construction process must adhere to strict specifications and standards. Extra attention is paid to the level of quality, that has to be specified in the general plan and discussed with the client beforehand.

The whole assembly process can be divided into three stages:

- Penultimate preparation of the constituent elements;
- The assembly itself;
- Joint welding.

Assembly works.

A lot of special equipment is involved in the assembly process. It is impossible to do without cranes, trucks and other elements of a construction fleet. The process itself must conform to strict technical specifications. The type of welding used has to be the one that is specified in the documents. Adherence to previously established dimensions is paramount.

One of the most difficult tasks is to install the elements in a position specified by the plan. Every detail in a prefabricated piece or the structure itself has to be positioned exactly according to technical specifications.

90 percent of success during assembly comes from the professionalism, experience and skill of the construction company’s employees. Equipment also plays a major part, as do specially prepared work areas, free space and vehicles.

Methods of assembly

The methods of assembly are categorized depending on how the structural elements are supposed to be joined together, as follows:
- Riveting;
- Welding;
- Bolt jointing.
The elements are assembled and stress-tested at the factory before being shipped out, so that no complications arise on the construction site.

Conditions mandatory for successful assembly

For the assembly process to be performed at the best level possible, the area in which the process is to take place has to be sufficient. For beams, frames and carcasses a space of 120×120 meters, with a ceiling height of at least 12 meters, will be enough. The maximal capacity of the vehicles involved must be at least 10 tons. To achieve precise assembly, all instruments used during the process must pass metrological certification regularly.

Modern welding equipment is capable of welding metal structural elements from 0,7 to 150 millimeters thick. A submerged-arc welding machine is a good choice for this process.

An expansion roller, metal cutter and also equipment for steel conditioning and aperture drilling are also needed to adequately perform the process. The above clearly indicates that only professionals should be trusted with the process of assembly.




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