Load-bearing standards for residential and office buildings?

The bearing standard of civil residential building floor is 2000 N/m2 live load (personnel, office furniture, etc. ). The fixed load is the floor weight, the plastering load at the bottom of the floor and the plane layout, which is about 3.5-6.0 kN/m2 (about 350-600 kg/m2) according to the design thickness (generally within the range of 100-200mm). The total is about 5.5-8.0 kn/m2, and about 550-800 kg/m2.

The ground bearing standard of the office building is 2.5kN/m2. The fixed load is the floor weight, plastering load at the bottom of the slab and plane layout, which is about 4-6.5 kN/m2 (about 400-650 kg/m2) according to the design thickness (generally within the range of 100-200mm). The total is about 6.5-9 kN/m2, about 650-900 kg/m2.

Because cement and other materials generally have a safety margin in construction, steel bars are often high in design, and the actual bearing capacity may be slightly higher than the design bearing capacity. In the use of buildings, it is generally possible to exceed the design value occasionally in a short period of time, but it is not advisable to be overweight in a short period of time or overweight in a small amount for a long time, so as not to affect the structural safety or reduce the building life.