Advantages of bolted joints
. Low cost of installation and implementation works
. The possibility of reproducing the structure and reusing it
. Restrictions on the supply of welding tools and equipment
. No need for skilled workers
. Being quiet during installation and operation
. Working environment
. No restrictions on connecting members
Disadvantages of bolted connection
Like any other method, the use of bolted connection has its disadvantages, which we will discuss below:
. The cost of materials required in this method is high.
. In case of applying vibration or shock loads, there is a possibility of loosening of connections.
In this method, the tensile strength of the roof is reduced.
. In this connection, there is a possibility of permanent failure when excessive loads are applied.
. If the screw or nut is corroded, there is a possibility of failure of the connections.
Comparison of bolted skeleton with welded skeleton
As mentioned before, bolted skeletons have a higher quality than welded joints and are very popular today. Welded skeletons have a lower production speed and lower quality than the bolt and nut type. Also, these structures have limitations such as the use of modern equipment, electricity supply,The use of an expert team as well as rust removal makes their use difficult. Anyway, Iran is in the category of earthquake-prone countries and bolt and nut skeletons are more popular.