How long does a steel structure house last life?

Steel-mixed, mixed, steel structure building service life ~ and residual value rate ~

First, the economic durability of all kinds of buildings:

1. Steel structure: 70 years for production rooms, 50 years for corroded production rooms, 80 years for non-production rooms;

2. Reinforced concrete structure (including frame structure, shear wall structure, simplified structure, frame-shear wall structure, etc.); 50 years for production housing, 35 years for corroded production housing, 60 years for non-production housing;

3. Brick-concrete structure first: 40 years for production housing, 30 years for corroded production rooms, 50 years for non-production buildings;

4. Brick-concrete structure second-class: 40 years for production housing, 30 years for corroded production rooms, 50 years for non-production buildings;

5. Brick and wood structure first: 30 years for production housing, 20 years for corroded production rooms, 40 years for non-production houses;

6. Brick and wood structure second-class: 30 years for production housing, 20 years for corroded production rooms, 40 years for non-production houses;

7. Brick and wood structure third class; 30 years for production housing, 20 years for corroded production housing, 40 years for non-production housing;

8. Simple structure: 10 years.

Second, the residual value rate:

1. Reinforced concrete structure: 0;

2. Brick-concrete structure first-class: 2%;

3. Brick-concrete structure second class: 2%;

4. Brick and wood structure first-class: 6%;

5. Brick and wood structure second class: 4%;

6. Brick and wood structure third class: 3%;

7. Simple structure: 0.

The depreciation life of a building is the number of years the value of the building is transferred, which is both related to and distinct from the durable life. The depreciation life is the socially necessary average useful life, or economic life, determined by the socio-economic conditions during use; Durability is a natural lifespan determined by structure, quality, etc. At present, the natural durability of the building is generally regarded as the depreciation life, without considering factors such as rising prices and man-made losses.

How long does a steel structure house last life? With the continuous advancement of China's energy-saving industrial policy, light steel structure houses continue to enter people's field of vision. Compared with traditional building houses, steel structure houses have the advantages of earthquake resistance, moisturizing, short construction period and low cost; However, they dare not be sure of its service life. Everyone knows that the service life of the house is a problem that many people are concerned about, the life of the house directly determines their capital investment in the property, the capital investment of the real estate is a large number, so how long is the service life of the steel structure house? Is it worth the investment? Steel structure houses in Europe and the United States and other countries have been very mature, we often see that many foreign houses are one or two hundred years old, and compared with the common building structure model in China, the average life span is less than 30 years; This is a terrible gap; What is the reason for this? Steel structure houses are built with light steel, and it is more convenient to rebuild, and the renovation of the house under the condition that the frame remains unchanged can achieve very good results. And ordinary buildings, difficult to transform! Check the requirements for building life design in China, and obtain the following data: 1. Steel structure house: 70 years for production housing, 50 years for corroded production housing, 80 years for non-production housing; 2. Reinforced concrete structure (including frame structure, shear wall structure, simplified structure, frame-shear wall structure, etc.); 50 years for production housing, 35 years for corroded production housing, 60 years for non-production housing; 3. Brick-concrete structure first: 40 years for production housing, 30 years for corroded production rooms, 50 years for non-production buildings; 4. Brick-concrete structure second-class: 40 years for production housing, 30 years for corroded production rooms, 50 years for non-production buildings; 5. Brick and wood structure first: 30 years for production housing, 20 years for corroded production rooms, 40 years for non-production houses; 6. Brick and wood structure second-class: 30 years for production housing, 20 years for corroded production rooms, 40 years for non-production houses; 7. Brick and wood structure third class; 30 years for production housing, 20 years for corroded production housing, 40 years for non-production housing; 8. Simple structure: 10 years. Steel structure housing can extend the life of Chinese housesSteel structure refers to the structural form that can bear and transfer loads made of steel plates and hot-stamped, cold-formed or welded profiles connected by connecting parts. Steel structure system has light weight, factory manufacturing, fast installation, short construction period, good seismic performance, fast investment recovery, less environmental pollution and other comprehensive advantages, compared with reinforced concrete structure, more in the "high, large, light" three aspects of development of unique advantages, in the world, especially in developed countries and regions, steel structure construction engineering field has been reasonable and widely used.