Steel connection systems

 STEEL CONNECTIONS


Connections are structural elements that are used for joining different members of a structural steel frame work. The member such as beams and columns are connected to one other, using the different connection systems.

Basically, there are 3 types of connection systems : 

Bolts 

Welding

Pin connection


  • PIN JOINT : 

Two structural members are connected through cylindrical shaped pins. It resists horizontal and vertical movements, but do not resist moment. It works essentially like a lapped joint. They look like they are designed to rotate, but they stand as a firm structure. 

  • BOLTED JOINT: 

Bolted joints use fasteners that hold structural elements in a specific position, which are then secured with screw thread. 

Cost - Less expensive. The manufacturing process is more efficient and automated. 

Structural performance - The manufacturing process determines when it comes to structural performance. Bolted joints offer simplicity but provides less strength compared to welded connections. 

Appearance and maintenance - These connections make a strong and bold appearance while it is difficult to clean the joints. 

Joint flexibility - These are flexible joints as the plates or angles connected, deflect during the load transfer. 

Installation - Easy and fast installation using impact wrench or an ordinary spud wrench.

  • WELDED JOINT: 
Welded joints consists of fusing two elements with extreme heat and allowing them to cool. These joints are permanent unlike bolted ones. 

Cost - These can be carried out only by certified welders, and the cost will be high. The welded connection require skilled labor and proper machines to proceed the process.  

Structural performance - No perforations in the material, thus providing higher strength. These connections are recommended when the structural performance of a project takes higher priority than cost. 

Appearance and maintenance - These appear to be really smooth ( depending on the type of finish ).The maintenance is also very easy as the flat surface can be cleaned.

Joint flexibility - These are more rigid. Welding is more versatile, since nearly any two surfaces can be welded together and new elements can be easily added to the existed unions. 

Installation - Easy installation and mostly happens on site. Once installed, it is permanent. 




NANDHINI.P









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