When applying for the renovation of rural dilapidated houses, the appraisal unit will appraise the dilapidated houses and classify the dilapidated houses at the same time. For dilapidated houses, construction plans are arranged according to the degree of danger, scope of influence, and light, heavy, slow, and urgent according to specific conditions. At the same time, the appraisal unit shall put forward the basis for comprehensive analysis and comprehensive judgment by the appraisal unit, and report it to the municipal real estate management department or its authorized unit for approval.
Dangerous rooms can be divided into different levels
1. Dangerous houses need to be provided with the basis of comprehensive analysis and comprehensive judgment by the appraisal unit, and submitted to the municipal real estate management department or its authorized unit for approval.
2. For dangerous houses, construction plans should be arranged according to the degree of danger, scope of influence, and light, heavy, slow, and urgent according to specific conditions.
3. Dangerous points should be combined with normal maintenance to eliminate danger in time.
4. Dangerous houses and dangerous points should be taken effective measures to ensure the safety of residential use after they have been identified and confirmed.
Critical room identification standards
1. In order to ensure the safety of domestic use, the identification of dangerous houses is based on this standard.
2. This standard applies to the houses managed by the real estate management department. For the appraisal of unit owned and private houses, refer to this standard. This standard does not apply to industrial buildings, public buildings, high-rise buildings and cultural heritage buildings.
3. The components mentioned in this standard refer to load-bearing components; the structures mentioned refer to the system composed of load-bearing components.
4. For important houses or complex structures that are difficult to identify, the necessary tests and calculations should be carried out.
5. When there are major differences in the factors that constitute dangerous houses, the local real estate management departments may formulate implementation rules or supplementary regulations when implementing this standard.
Dangerous component refers to the deformation of the component that has reached the limit state of its carrying capacity and is not suitable for continued loading.
(a) Independent column foundations are based on a single foundation of a column;
(b) Strip foundations are based on the length of a single-sided space between nature;
(c) The full house red foundation is based on the area of a natural space.
2.The wall is based on a high floor and a natural side;
3, the column is a layer high, one unit;
4. Beams, joists, purlins, etc. use one span and one unit.
5.Prefabricated boards are made of blocks, and stamped boards are based on the area of a natural space;
6. The roof truss is based on a stack.
1. Geological slippage, or serious inadequacy of bearing capacity, or other special geological reasons, leading to uneven settlement caused by structural inclination, displacement, cracks, distortion, etc., and there is a tendency to continue development.
2. The ground gene is adjacent to the building to increase the load, or due to the local addition of layers to increase the load, or due to other human factors, resulting in uneven settlement, causing the structure to significantly tilt, displacement, cracks, distortions, etc., and there is a trend of continued development.
3. The foundation is aging, corroded, crumbled, broken, resulting in significant tilt, displacement, cracks, and distortion of the structure.
Reinforced concrete structural members
1.Columns and walls
(a) The column has cracks, the protective layer is partially peeled off, and the main tendons are exposed; or obvious horizontal cracks are generated on one side, and the concrete on the other side is crushed, and the main tendons are exposed; or obvious cross cracks are generated.
(b) Obvious cross cracks in the middle of the wall, or accompanied by peeling of the protective layer.
(c) The columns and walls are tilted, and the amount of tilt exceeds 1/100 of the height.
(d) The concrete of the column and wall is cracked, carbonized, and bulged, and its damage surface exceeds 1/3 of the total area, and the main reinforcement is exposed, the corrosion is severe, and the cross section is reduced.