steel engineering project

Specifications

Steel engineering has much advantage and appliction as the follows:
In general, the properties of the materials is the introduction of a new architectural form the starting point. Steel is made of steel plate, hot-rolled steel or cold forming of thin-walled steel. And the structure compared to other materials, steel has the following characteristics.
1. Materials, high strength, good plasticity and toughness
Steel and other building materials such as concrete, masonry and timber compared to the intensity is much higher. Therefore, especially suitable for large span large or load components and structures. steel also has good ductility and toughness characteristics. Plastic is good, the structure under normal conditions will not be a sudden overload fracture; toughness is good, the structure of the dynamic load adaptability. Good energy absorption capacity and ductility also makes steel with superior seismic performance. On the other hand, due to high strength steel, made of small cross-section thin-walled components subjected to pressure when you need to meet the requirements of the stability, intensity, and sometimes can not be fully realized.
2. Material is even, and mechanical calculations are in line with the assumption that Comparison of the internal organization of steel close to homogeneous and isotropic,  a certain range of stress is almost completely flexible. Therefore, the actual steel force and results are more in line with engineering mechanics. steel smelting and rolling in the process of quality can be strictly controlled, and material fluctuations in the scope is small.
3. Steel manufacturing is simple, the construction cycle is short
Steel materials used in a simple but useful person, processing is simpler, and they can use the machine operators, therefore, a large number of steel is generally made of metal structures plant specialization components, high precision. Components assembled on site, can be used easily and erection of bolts and bolt the ordinary, and sometimes the ground can also be assembled and welded into larger units re-lifting, in order to shorten the construction cycle. In addition, building of steel is also easier to carry out alterations and reinforced with bolts to connect the structure , they also can be relocated as needed.
4. The light weight steel structures
Although the density of steel, concrete and other building materials than the large, reinforced concrete structure, but lighter than steel because the steel strength and density of concrete is much greater than the ratio. In the same span to withstand the same load, the weight of a maximum of steel roof truss reinforced concrete roof truss does not exceed 1 / 3 to 1 / 4, cold-formed steel roof trusses or even close to 1 / 10, provideing a convenient condition for the lifting. Who need long-distance transport of structure, such as the construction in inaccessible mountainous and remote areas of the project, light weight is also an important advantage.