LSF structure

What is LSF?

LSF to light steel structures It is said that This method of constructing the building skeleton is based on the use of thin steel sheets with galvanized coating, which has many advantages, including earthquake resistance and lightness. The connections of these steel structures are made through bolts and welding, and the walls are filled with different and desired materials.

LSF structural system or lsf is a pre-designed system It is advanced and used in the construction of buildings, offices, villas, etc. Natural disasters such as floods and earthquakes are lurking, which endanger the lives of many people every year, most of the deaths caused by earthquakes are due to the dead loads of the building. But what are dead loads? Dead loads are the old and worn materials used in the construction of apartments. But LSFs do not have such risks due to their integrated construction and quality materials used in them. Other advantages of LSFs include fast construction, high-quality materials, beautiful designs, saving time and energy, can be installed in any place, etc.

☑️ What is LSF?

Prefabricated LSF structures with architectural design are produced in factories and connected to each other on site using drill head screws, bolts, etc. These galvanized sheets are produced with different thicknesses and widths depending on the type of building, and it is a very suitable alternative for concrete construction and the traditional method. These structures were first produced in America in 1850, but did not make much progress until 1964, when standards and regulations were established.

☑️ How to execute LSF structures

Like other structures, in the implementation of the lsf structure, in the initial stage of the work, a schematic and preliminary plan is made in which the wind and earthquake resistances and the thickness of the columns and beams are defined, and a model of the building desired by the client. it's gonna be built; Also, in this preliminary plan, all the water, electricity and sewage connections to the building are specified; After these steps, it is time for foundation and skeletonization. Then the walls of the empty building are made and the inside of this space can be filled with light concrete, which is a good insulator for energy and sound. The next stage is the external and internal coverings of the roof, and the last stage is the electrical, mechanical, door and window installations.

☑️ LSF design standards

In 1939, according to the research that happened at Cornell University, the first primary standard was registered with the support of AISI. Today, due to the good quality of LSF production and distribution, as well as its high speed and high resistance to natural disasters such as earthquakes, LSF is used in countries such as England, America, Canada, Australia, Japan, etc. In the past years, the use of lightweight structures, the most widely used of which is LSF steel structures, has grown, and it seems that this development will accelerate in the near future. In Iran and in the whole world, LSFs are used to build houses and prefabricated buildings.

☑️ Thin wall steel sections

Thin-walled steel sections are basically a set of cold-rolled metal sections, which are made from thin steel sheets and Roll Forming formula. In the structures that use LSF in their construction, the roof is usually sloped and metal trusses are used in its construction. and other materials cover the exterior of the building. From the inside of the building, there is no difference between a building built with LSF and a building built in the usual and traditional way. At the same time, very strong sound and thermal insulation are used inside the wall to prevent energy wastage, which is a big problem in other buildings.

☑️ Steps to execute the LSF Structure

The main part of the work, about 70%, is made by the company. First, the foundation is laid in a strip or wide form, and then inside it, the waiting screws are made in the form of bars or sticks at a distance. are laid, the foundation must be designed in such a way that it transfers all the applied pressures properly. Naturally, the size of the foundation depends on the type and height of the building and the amount of pressure applied and the capacity of the soil. According to the calculations made by experts and experts, due to the light weight of the structure, there is no need to lay the foundation of the building in small single-story buildings. but in two floors or more, the foundation of the building must be completely built. In the field of foundation, there are no restrictions related to the topography, gender and slope of the land, and it can be implemented at any time and place.