Why do we embed columns in concrete? As we have mentioned in our previous blogs, Mother Nature has a very significant impact on basically everything we do, especially on buildings. That’s why it is so very important to secure the foundations of your steel shed.
As we have already stated, all buildings have forces exerted on them by the everyday natural elements - the main one being wind, but buildings are also often affected by seismic and snow loadings.
When discussing foundations or connecting the building to foundations, the forces we are most concerned about are called uplift forces, which are directly affected by wind and internal pressures associated with wind.
Obviously wind blowing hard against the side of a building wants to roll it over, or when semi-contained inside through an open sided building, it basically tries to “lift it” [building] like an umbrella. Equally, wind blowing against a building on an angle tends to cause a twisting or racking effect.
For simplicity purposes - the pressures on a portal can be called compression, tension and shear with all being generated into the portal columns.
Therefore the stronger more rigid or fixed the column bases are to the foundations, the more they are able to resist these pressures. Embedding column bases in concrete greatly assists the required resistance.
Column fixing is a very common type of foundation, particularly in more open type structures.
So if you are planning on building a steel kit home, farm shed, industrial steel building or barn, please make sure that you secure your building and meticulously meet all construction and engineering plans and requirements.