15 March 2021

Do you want to use a lightweight steel roof frame? Pay Attention To These Some Points!

The roof is an important element that serves to protect the inside of the building, including the occupants in it. The types of roof frame construction materials also vary. Starting from wood, steel, and mild steel. Wooden roof truss construction is a type that is quite popular in Indonesia. But lately, it has become increasingly difficult to get quality wood. On the other hand, standard quality wood also has a fairly expensive price. Meanwhile, advances in technology have made the construction and building material industries adjust. Many new building materials were then used more efficiently. One of them is mild steel. So no wonder, the selection of lightweight steel roof trusses today is widely used as a substitute for roof truss wood.


Before discussing further about the advantages and disadvantages of using lightweight steel roof trusses, we will explain the four main functions of roofs in buildings. The main functions of the roof in buildings are as follows:

- As protection from direct sunlight so that it can keep the room cool

- As a protection against the entry of rainwater into the room

- As a barrier to wind pressure that moves horizontally, and

- To receive the load of the building structure


The advantages of lightweight steel roofs

The advantages of a lightweight steel roof are as follows:

1. Rust-proof and wing-proof

One of the advantages of mild steel material is that it does not rust easily and is quite resistant to extreme weather. This is different from the wooden roof that is used over time, which can become porous due to being eaten by termites.


2. Can be formed as you wish

The lightweight steel frame can also be adjusted according to the variety of the building roof model you want. But you also need to remember, the formation of a lightweight steel roof truss cannot be done carelessly. In addition to requiring correct working drawings, the use of mild steel materials requires careful and accurate structural calculations. For that, use a trusted applicator or vendor to determine the concept of a lightweight steel roof model.


3. Light weight and easy to install

Even though it looks lighter and thinner than ordinary steel, mild steel material does not easily expand and shrink. In addition, its lightweight nature will certainly make it easier for construction workers to install or dismantle the roof truss so that it can save time. This is because everything is already prepared in the factory. When in the field, construction workers only install parts.


4. Mild steel has a high tensile stress

In terms of flexibility, mild steel has better flexural properties than conventional steel. The tensile stress is around 550 Mpa. This tensile stress is certainly higher than conventional steel roofs which only have a tensile stress of around 300 MPa.


5. Can be used for various types of roofs

Using mild steel as a roof frame does not limit you in choosing the type of roof covering. With a mild steel frame, you can use various types of tile such as ceramic, asbestos, glass, or other types of concrete. But what you need to remember, the heavier the roof tile or roof covering, the more lightweight steel will be used. For that, calculate it accurately!


6. Can be recycled

One of the other advantages of mild steel is that it can be recycled. It is undeniable, when dismantling or renovating the roof of a building, it will leave a roof frame that is no longer in use. For that, so that the construction waste generated is not too much, you can recycle the remaining lightweight steel frames from the demolition of buildings.


The disadvantages of a lightweight steel roof

If previously we have explained 6 (six) advantages of mild steel material, then we will explain some of the disadvantages. The disadvantages of using a lightweight steel roof frame are as follows:

1. Easily carried away by the wind

Even though the installation process has fastened the bolts, the presence of strong winds is a disadvantage of mild steel materials. For this reason, the selection of mild steel is not recommended for use in buildings that are located in areas that have a lot of wind and are strong.


2. Aesthetics is lacking

The aesthetic value of mild steel is very dependent on the cover. For that, a roof platform is needed for the ceiling of the house in order to add neatness and beauty.


3. Prices are quite expensive

Light steel frame construction is a type of building material that is quite expensive. However, the price of mild steel is still cheaper than wood material considering the increasing scarcity of quality wood.


4. If the calculation is wrong, it can be fatal

Problems will arise if the installation process is not carried out carefully and through an accurate calculation process. In other words, the installation of a light steel frame has technical requirements and systematic workmanship. To anticipate the failure of the lightweight steel roof truss structure, use a trusted building structure design service.