Light Steel Frame system
The principle on which Off Site Construction is built is the industrialisation of processes and building solutions, that increasingly result in factory processing, speeding up and optimising all worksite activities, as we have pointed out in other articles
To help you understand this concept better, we will use a perfect example: cars. Let’s imagine the evolution of the car or shipbuilding sector, for example. In both cases, everything has changed: the materials used and, obviously, the processes. In fact, the industrialised methodology, which has increasingly taken root, has consequently resulted in a change in the end product
Today’s cars and ships are not the same as they used to be; the vehicles and ships we have are the result of an important evolution that has made them more technologically advanced, eco-friendly and built with industrial processes
In the same way, we hope that modern buildings can also be thus transformed. It is unthinkable that the same construction methods used in the 1970s, for example, are still valid today. There have been innovations that have also affected the construction sector and that have decisively changed both the way of producing and the way of working
In fact, in this respect we can mention the Light Steel Frame (LSF) system, or, as it is also known, the light steel construction system
The Light Steel Frame system, like all dry construction systems in general, is an integral part of Off Site technologies and can be applied to various construction methods and types
If you would like to learn more on this subject, read the article “Changing construction: modern building techniques, Light Steel Frame and dry construction”
Not all companies are already applying steel construction systems – specifically the Light Steel Frame system; this is why Manni Green Tech has decided to offer concrete support to builders and designers who instead have the intention of changing their way of conceiving construction, for more efficient and higher-quality worksites
Features of the Light Steel Frame
Manni Green Tech operates in the prefabricated structure market, offering an integrated construction system for building modular and scalable buildings, using for this purpose light steel structures that can be combined with hot laminated steel structures
Prefabricated buildings, which integrate dry construction with the light steel frame construction system, are fast to execute, offer more safety at the worksite, reduce the environmental impact, guarantee energy efficiency and acoustic comfort. In addition, all buildings built with this technique are earthquake-proof
:We would like to highlight the following main features of the Light Steel Frame system
The possibility to adapt to various architectural solutions
The construction of buildings with high energy, acoustics and safety performances in case of earthquakes and fire
The industrialisation of the system, which guarantees integration of the production system and the design, for excellent quality
The lightness of dry construction combined with the high durability of steel constructions
As we have pointed out many times before, the Light Steel Frame system is the future of the construction industry. Let’s see how the technical literature has defined Light Steel Frame or LSF
a construction system based on structures made up of cold-shaped steel elements, manufactured by cold bending or profiling of thin steel sheets
There are, in turn, two construction methods that can be applied depending on the needs of the design
Platform system: when the structure is built floor by floor, so that the lower floor can serve as support for the construction of the upper floor. The walls are not continuous and the loads are transferred to the walls of the lower floor through the steel structure
Ballon system: the walls are continuous for more than one floors and the loft is connected to them. In this system, the loads pass from the upper floor to the lower floor, without affecting the loft’s structure
?What are the advantages of this building technique
One of the main advantages of the Light Steel Frame system as a building technique is the very low, almost zero, need for maintenance. As time goes by, many building materials deteriorate. This is not the case with a steel construction system
Steel preserves its technical and structural features for its entire lifecycle; this means that it is a material particularly suitable to design uses with exposed elements and those left exposed to weathering
Moreover, thanks to its physical characteristics, steel is not under attack from micro-organisms, such as mould, fungi and bacteria, and is also immune to humidity. This makes it the perfect long-lasting and effective building material.
Here are some other advantages of the Light Steel Frame system
Speed of construction and, therefore, compliance with delivery times
The possibility of not using large lifting equipment, as the material is very light
Considerable water savings during the construction phase, a fundamental element for traditional construction methods
Ease of transport and traceability
Space savings thanks to the solutions of high-performing and compact walls that make it possible to increase the net floor area, minimising waste
سازه ال اس اف lsf
در ساختمان سازی مهندسین خبره و کارکشته ابتدا سازه ای را که روی نقشه پیاده سازی می نمایند نوع و سبک ساختار سازه و میزان بار متحمل بر آن و متریال های مورد نیاز را بررسی و ارزیابی می نمایند. در ساختمان سازی دسته ی ویژه از سازه ها هستند که از زمره سازه های سبک وزن قرار میگیرند به طوری که وزن پایه های آن کاملا پایین بوده و قابلیت این را دارند که با وزن پایین ارتفاع ساختمان بلند تر باشد. یعنی در تعریف کلی سازه هایی با وزن کمتر و ارتفاع بیشتر باشند. به این مدل از سازه ها در صنعت ساختمان سازی سازه ال اس اف ( LSF) می گویند.
استایل سازه های ال اس اف کم وزن بوده و بار چندانی ندارد.
مهندسین این نوع سازه ها سعی دارند برای ساخت ساختمان هایی کم هزینه تر و مقرون به صرفه راه هایی را ارائه دهند تا ساختمانهایی ساخته شود که از حجم و هزینه کمتر برخوردار باشند. اصلی ترین مسئله در خصوص ساخت سازه های ال اس اف این است که در واقع زمان کمتری برای ساخت و آماده سازی و نصب آنها صرف می شود. کاربرد سازه های ال اس اف در بسیاری از موارد قابل انجام است علی الخصوص می توان در کنار ساختمان های قدیمی از این نوع سازه ها با دکوراسیون دلخواه و طرح و رنگ مطابقت دلخواه داد.
پایه کار در سازه های ال اف اس به کمک عناصر گل میخ ها و مسیرها شکل گرفته است و از سوی دیگر اسکلت اصلی سازه، ترکیبی از اجزای فولاد گالوانیزه از جنس نورد سرد شکل گرفته است. همچنین می توان گفت مهندسین سازه های ال اس اف از پروفیل های U، C و Z در ساختار آن استفاده می نمایند.
آیا سازه های ال اس اف lsf با دوام هستند؟
این سوال مطرح است که سازه های lsf ال اس اف تا چند درصد و از چه اندازه دوام و پایداری برخوردار هستند؟ به تاریخچه این نوع سازه ها بر میگردیم که برای اولین بار از سازه ال اس اف به عنوان یک عضو غیر اصلی از اعضای فولاد نازک برای دیوارها استفاده می شد. برای اولین تجربه استفاده از این نوع سازه در دیوارهای داخلی و فضای دکوراتیو که غیر باربر بوده و سنگینی ساختمان هیچ ارتباطی بر آنها نداشته استفاده می کردند. در طی زمان سعی شده سازه های سبک ال اس اف را تقویت بخشی نمایند و استحکام و درجه دوام آن را بالاتر برند و این سازه توانست این تایید را از طرف مهندسین امر دریافت کند تا به عنوان دیوارهای خارجی و باربر نیز استفاده شود.
از آنجا که دستورالعمل ساخت ال اس اف به دهه های اخیر برمی گردد لذا هنوز یک دستورالعمل نهایی به عنوان یک الگوی تمام عیار که تمام ملاک های دوام و بکارگیری این دیوارها را دربرداشته باشد ارائه نهایی نشده است.
البته طرح دیوارهای مورب و اتصالات اعضای مرزی، استاندارد لازم به این سازه را تضمین می نماید و طبق تایید مهندسین استفاده از این روش می تواند ال اس اف را در برابر زلزله مقاوم سازد.
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