The installation and construction of the attic steel structure is a process of adding steel structures to the original structure. The construction process must not only protect the original structure from damage, but also ensure that the new structure can be used safely for a long period of time. For the sake of safety, economy and science, the main processes of steel structure loft construction are construction preparation, material procurement, on-site construction and on-site finishing.
Attic steel structure installation
1. Measure payoffs According to the loft design drawings, the site positioning and release line, determine the size of the embedded position and need to remove the plastering position range.
2. Anchor plug embedded parts are fixed on the original structure with chemical bolts. The surface of the pre-embedded steel plate of the main steel girder is polished and flat, and the other irregularities are treated according to the situation. According to the design position of the embedded parts, the original structural steel drill bolt hole is staggered and cleaned. After the hole is drilled, chemical bolts can be implanted and the bolt cannot be moved until the chemical is completely solidified.
3, embedded installation According to the actual chemical bolt hole position, in the embedded steel plate and angle steel (beam) positioning drilling, and then install the embedded steel plate. Other embedded parts are installed together with cross bracing between beams.
4. After the anti-rust treatment material arrives on site, all steel structure materials shall be rust-removed, protected by antirust paint and dried.
5, re-measure the size of the steel processing site, the precise processing of steel, and remove the welding position paint film, in order to one-time accurate installation in place and to ensure the quality of welding.
7, cross brace installation According to the design drawings, the main steel girder and the cross bracing between the beams are welded.
8. The floorboard installation is based on the OSB board. For example, according to the attic floor structure design, the structural board (such as the OSB board) is fixed on the steel structure with tapping screws, and the soundproof cotton (mat) is applied, and the surface board is self-tapping. The screws are fixed on the lower structural plate. The surface layer board and the lower structure board are overlapped by stitching. It is advisable to leave about 3mm slits between the plates and fill the gaps.
Five advantages of steel construction
First, light weight and high strength. The weight of houses built with steel structures is about one-half that of reinforced concrete houses, and the area of ​​use is about 4% higher than that of reinforced concrete houses.
Second, seismic performance is good, and its ductility is better than that of reinforced concrete. According to the results of post-earthquake surveys at home and abroad, the number of collapsed steel structure buildings is at its lowest. Since the September 21, 1999 earthquake in Taiwan Province of China, this has been recognized, and the steel structure buildings have grown rapidly.
3. Steel structure components, wallboards and related parts are produced in the factory, which reduces the on-site workload, shortens the construction period, and meets the requirements of industrialization.
Fourth, steel structure components are manufactured in factories with reliable quality, accurate dimensions, easy installation, and easy cooperation with related parts.
5. The steel can be recycled, and there is less environmental pollution during construction and demolition. It conforms to the national policy of advancing industrialization and developing energy-saving land-based residences.
Steel structure attic should pay attention to several points
1. Before you make the attic, it is best to find several more professional loft companies to design the design of the attic steel structure.
2. Determine the material used for the attic steel structure (span more than 3.5 meters. The best use of GB steel). Some unprofessional loft companies recommend that the owner use square steel to do the unreasonable, (the square steel can not be fully rust-proof inside and outside. Easy to oxidize, the thickness is relatively thin) Correct should use channel steel or I-beam.
3, the frame structure of the house is a hollow brick, when the attic is made of steel channel should be a beam, if only a hole in the wall on the channel channel. Hollow brick single force. It is easy to draw.
4, attic steel channel steel. The maximum size of the angle steel paving is 610mm*610mm, which is determined according to blockboard 1.22m*2.44m. Otherwise it will waste a lot of board.
5. The channel and angle steel welding must be in one plane. Welding at the bottom of the channel, when the board is placed, it will not be true and must be leveled after welding.
6. The connection between channel steel and channel steel is best to use the insert welding method.
7, rust is also very important, just the structure of the package inside the moisture absorption is easy, scattered tide is difficult (especially above the toilet attic). It is best to do a descale before processing.
Editor's summary: The information on the five major advantages of steel structure installation and steel structure construction at the attic has been introduced here for everyone. I hope this article will be helpful to everyone. If you still have something you don't understand, you can leave a message to Xiaobian at the bottom. We will answer your questions as soon as possible.
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