Advantages of bolted metal frame construction

Each type of skeleton has special advantages. These benefits can be related to the material, production method, technologies used, or other things related to the production and installation method of the structure. Choosing the best material and manufacturing method has always been one of the employers' concerns. Smart choice of material and type of structure requires proper understanding of construction methods and advantages and disadvantages of each.

 

The advantages of metal frame buildings with bolt and nut connections (or so-called prefabricated structures)

1.The execution speed of bolted metal structures is higher than that of welded joints, and the construction time of bolted metal structures is less than that of structures with welded joints, and considering the long duration of projects in our country, this type of structure is recommended to reduce the construction time.
 

2.Installation speed: In this type of structures, due to the complete elimination of welding at the installation site of the structure, it is limited only by placing parts and closing a number of bolts and nuts, which significantly increases the installation speed and minimizes installation errors.
 

 

3.Lower cost: implementing a bolted building can economically impose a lower cost to the owner, but this does not mean that bolted construction is less expensive in two structures whose sections are completely the same. But due to the open hand of the designer in optimizing and making sections with less weight, the possibility of reducing the weight of the structure by the designer is easily possible.
 

4.The possibility of opening the structure and reuse: the members of steel structures that are connected to each other with screws can be separated and connected to each other again in another place and a new structure can be built. This issue is particularly important in the implementation of temporary structures such as bridges and temporary scaffolding.
 

5.Quality of construction: The quality of construction with the facilities available in the factory and according to the plans designed and under the supervision of the quality control unit is not comparable to the welded structures that are built at the place of installation of the structure.
 

6.Materials: In the building with bolted metal structure, it is possible to implement and produce lighter and more resistant sections, and the use of sheets in the construction of iron sections and sections is minimized.
 

7.Safety and stability of the structure: both theoretically and practically, it has been proven that bolted buildings are more stable and resistant to earthquakes and lateral forces due to their better quality.
 

8.Resistance to fire: at high temperature, bolted metal structures are more resistant to heat and the structure is less likely to be damaged than welded joints.
 

9.No need for work space: usually in cities due to the lack of a suitable place for construction, most contractors suffer a lot.
 

10.Global prevalence: in all American and European countries, all structures are implemented in the form of bolts and nuts, except for very minor structures whose connections are implemented by welding. One of the important reasons for using this type of structures in these countries is its better performance and the greater experience of those countries in the construction of steel structures.
 

11.Corrosion of the structure: in bolted structures before painting, the parts inside the sandblast and wirebrush devices are de-rusted under the supervision of the quality control unit, which is not done in welded structures, and also in welded structures instead of zinc-enriched paint, which in structures Bolts and nuts are used, stainless steel is used, which causes rapid corrosion of the structure.
 

 

12.Working environmental conditions: for the proper implementation of welding connections, it is necessary that the ambient temperature, air conditioning, installation location, and the connection access space are in suitable and acceptable conditions. While the limitations mentioned in the implementation of steel structures with the help of screw connections are far less. The main problem in the implementation of steel structures with screw connections arises due to incorrect and inappropriate implementation of holes and failure to observe the amount of pre-tension in the screws and their non-compliance during implementation and installation. Therefore, in the installation of member holes in metal industry workshops, the location of the holes should be determined carefully and the members should be drilled with appropriate tools and equipment.
 

13.The possibility of use in disaster management: due to the possibility of moving such structures, it is possible to move and install them in crisis areas such as floods and earthquakes.