The advantages and disadvantages of light steel keel light steel keel classification

With the development of China's modernization, the near-young steel keel has been widely used in hotels, terminal buildings, passenger stations, stations, theaters, shopping malls, factories, office buildings, old building construction, interior decoration, ceilings and other places. What are the advantages and disadvantages of the light steel keel ? There are several types of light steel keel classification? Xiaobian now gives you a detailed explanation.

What is light steel keel

Light steel keel is a new type of building material. With the development of modernization in China, light steel keels are widely used in hotels, terminal buildings, train transportation stations, railway stations, playgrounds, shopping malls, factories, office buildings, and old buildings. Renovation of buildings, interior decoration, roofs and other places. Light steel (baking paint) keel ceiling with light weight, high strength, adapt to waterproof, shockproof, dustproof, soundproof, sound-absorbing, constant temperature and other effects, but also has a short duration, easy construction and so on.

The light steel keel is a construction metal skeleton made of high-quality continuous hot-dip galvanized sheet metal and rolled through a cold bending process. It is used for the decoration of non-load-bearing walls and building roofs that are decorated with light-weight plates such as gypsum board and decorative gypsum board. It is suitable for the decoration of various types of building roofs, the interior and exterior walls of buildings, and the basic materials of scaffolding ceilings.

Classification of light steel keel

Light steel keel according to the use of ceiling keel and partition keel, according to the cross-sectional form of V-type, C-type, T-type, L-type, U-type keel.

The marking order of the light steel keel is: product name, code name, width, height of the section shape, plate thickness, and standard number. For example, a ceiling keel with a section shape of “C”, a width of 50 mm, a height of 15 mm, and a plate thickness of 1.5 mm is marked as: Light steel keel for construction.

Appearance quality Light-gauge steel keel should be smooth in shape, with clear edges and corners, and the incision must not have burrs and deformations that affect its use. The galvanized layer must not have defects such as peeling, oncogenesis, and shedding. For defects such as corrosion, damage, dark spots, pits, etc., the test shall be conducted in accordance with the provisions of Table 2-81. When visual inspection is performed, visual inspection shall be carried out under conditions of light illumination at a distance of 0.5 m from the product. The surface of the light steel keel should be galvanized and rust proofed. The double-sided galvanized amount is: no less than 120g/m*m.

The main specifications of the cut off keel are divided into Q50, Q75 and Q100.

The main specifications of ceiling keels are divided into D38, D45, D50 and D60.

Light steel keel advantages and disadvantages

First, advantages:

1, its own lighter weight. Light steel keel is a lightweight material. The weight of ceilings made with this material is only 3 to 4 kg/m2. If the ceiling is composed of 9 mm thick gypsum board, it is about 11 kg/m2, which is 1/4 of the weight of the plaster ceiling. The partition has a self-weight of 5 kg/m2, and the wall composed of gypsum boards of 12 rnm thick on both sides weighs about 25-27 kg/m2, which is equivalent to only 1/10 of the quality of a half-brick wall.

2, excellent fire performance. The partition made up of light steel keel and 2 to 4 layers of gypsum board, the fire resistance limit can reach 1. O ~ 1.6h. Therefore, the light steel keel has excellent fire performance.

3. The construction efficiency is high. As the light steel keel is a lightweight material, a prefabricated construction method can be used. Therefore, its construction efficiency is high, and the general construction technology level can be cut off every working day by 3 to 4 m2.

4, the structure is safe and reliable. Because the light steel keel has excellent characteristics such as high strength and rigidity, the structure made of it is very safe and reliable. For example, using a partition wall keel with a width of 50-150mm to produce 3.25-6. When the OOm is high, the maximum deflection of the wall keel under the uniform load of 250 N/m0 can meet the requirement of the standard not more than 1/20 of the height.

5, good impact resistance. The light steel keel and 9-18mm thick plain paper gypsum board constitute the partition wall, and its longitudinal fracture load is 390-850N, so its impact resistance is good.

6, good seismic performance. The light steel keel and the surface layer are often fixed with shot screws, blind rivets and self-tapping screws. The shock resistance is good. Under the effect of seismic shear, the partition only produces bearing slip, while the light steel keel and the surface itself are very weak and will not be damaged. |

7, can improve the insulation, sound insulation effect and indoor utilization. Due to the small footprint of the light steel keel partition, such as the Q75 light steel keel and two 12mm gypsum board partitions, the width is only 99mm, and its thermal insulation performance far exceeds a brick wall. If the light steel keel is filled with thermal insulation materials such as rock wool, the thermal insulation effect can be equivalent to a 37mm thick brick wall. The use of such materials in partitions or ceilings, such as entertainment venues, conference rooms, offices, etc., can not only solve the problems of sound insulation and insulation, but also improve the utilization of the interior.

Second, the disadvantages: There is a main keel, covered keel, hanging fasteners composed of, need to adjust the level, it requires at least 100mm to 150mm above the height of the top space occupied. And there are high requirements for the construction process. Only straight lines can be made. It is not suitable for special shapes.

Xiao Bian concludes: The relevant content of the advantages and disadvantages of the light steel keel is introduced first. Nowadays, there are two types of keels that are commonly used in the market: light steel keels and wooden keels. The wooden keel is not introduced today. To learn more about the difference between wood keel and light steel keel, you can continue to pay attention to Xiaobian's articles or pay attention to this website. Follow-up articles will be uploaded.

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