All About Steel Frame Structure And Steel Fabrication

All About Steel Frame Structure And Steel Fabrication

Most of the steel fabrication involves a steel type called mild steel. Mild steel is an extremely strong form of steel and its immense strength is what makes it advantageous for buildings. Another great benefit steel frame structures is their flexibility. They can be bent without cracking and thus do not break when pushed sideways by let’s say an earthquake or wind.
    The third feature of steel structures is their plasticity. This basically means that steel does not suddenly break like glass when it is subjected to extreme force.  However, it will slowly lose its shape. This characteristic allows steel structures to deform slowly and thus gives inhabitants a warning or signal to escape.
      Steel buildings don’t suddenly destruct; they rarely ever collapse. Steel mostly performs better than other materials in case of earthquakes etc. due to these properties.
        However, one drawback of steel structures is that they lose their strength quickly when exposed to fire. For example, at 500°C mild steel may lose almost half of its strength. This was the reason behind the collapse of World Trade Towers in the year 2001. Therefore, it is strongly recommended to protect steel in buildings from high temperature or fire. This is mostly done by wrapping the steel with boards or covering it with fire protection spray.


          Steel frames are mostly used in
        • Industrial Buildings It is because steel frames have the ability of creating large spaces and involve low cost
        • High-rise Buildings It is because steel frames are immensely strong and have a low weight. Also, their construction does not take much time.
        • Warehouse Buildings It is because of the same reasons mentioned under industrial buildings i.e. low cost and ability to create large spaces.
        • Temporary Structures As steel frames can be quickly constructed and removed.
        • Residential Buildings Steel frames are fitted in residential buildings using a technique called “light gauge steel construction”.

          There are various types of steel fabrications or steel constructions. The most common ones are listed below:
        • Conventional Steel Fabrication This construction method involves cutting of steel to correct lengths and then welding the pieces together to make the final structure. This can be done at a labor-intensive construction site or partially at a workshop to reduce construction time.
        • Bolted Steel Construction This type of construction occurs when the steel constructors manufacture finished, painted steel parts, which are afterwards transported to the construction site where they are bolted together. This steel construction method is preferred over other methods as most of the construction is done at the workshops which saves time. Another advantage of this method is that as the workshops have all the required machinery and better working conditions as compared to construction sites, the fabricators find it easier to work in workshops. One of the most common example of bolted steel construction are pre-engineered buildings as they are first designed, then fabricated in workshops, and finally transported to the construction sites where they are erected.
        • Light Gauge Steel Construction This type of construction process is common for residential buildings and other small buildings. It is quite similar to wood-framed construction. The only major difference between the two methods is that light gauge steel construction uses light gauge steel parts in place of wood. Light gauge steel is in form of thin sheets of steel that are bent to form C-sections and Z-sections. However, if you use this type of steel, make sure they are tightly bolted, else they may fail to resist wind forces and blow away like umbrellas.

          Listed below are the major advantages of steel:
        • They are time-efficient as most of the work can be done at the factory.
        • They are flexible and do not break suddenly like glass which makes them highly resistant to wind forces or earthquake etc.
        • They can be bent into any shape and can be cladded with any other material.
        • They can be joined by various methods like welding, bolting, and riveting.

          Following are the main disadvantages of steel structures:
        • They may lose strength when exposed to high temperatures or fire.
        • They can corrode in humid or damp environments.