How to solve the dangerous house after the earthquake

Generally speaking, cracks are horizontal and caused by drywall. If it is an oblique crack, you should pay attention. It is probably caused by uneven settlement of foundation, which is difficult to remedy. Let the property company invite professionals to check (experts have to pay more) and take corresponding measures, such as adding columns.

Identification of dangerous houses

3. 1 Dangerous buildings (referred to as "dangerous buildings" for short) refer to buildings with dangerous load-bearing components, whose structures lose their stability and bearing capacity, and may collapse at any time, which cannot guarantee the safety of living.

Dangerous buildings are divided into whole buildings and local dangerous buildings:

A. Overall dangerous houses refer to houses that may collapse at any time;

B. Local dangerous houses refer to houses that may collapse at any time.

3.2 Dangerous houses shall be identified as buildings, and the unit of measurement shall be square meters of construction area.

A. The whole dangerous building is calculated with the whole building area in square meters;

B. Some dangerous buildings are calculated in square meters that endanger the construction area of collapsed houses.

3.3 The appraisal of dangerous houses should be based on the appraisal of foundation and structural components, and comprehensive analysis and judgment should be made in combination with historical situation and development trend.

3.4 When judging the danger of foundation or structural members, we should consider whether the danger of members is isolated or related.

A. If the danger of components is isolated, it does not constitute a structural danger;

B if the hazards of components are related, the scope of hazards shall be determined through the contact structure.

3.5 From the historical position and development trend, the foundation should consider the following factors: the influence of structural members on the foundation.

A. the degree of structural aging;

B. the influence of the surrounding environment;

C. the value of design safety;

D. human factors that destroy the structure;

E. dangerous trends.

3.6 Determination of danger range

3.6. 1 overall dangerous building

3.6. 1. 1 Danger caused by foundation may endanger the main structure and cause the whole house to collapse.

3.6. 1.2 Dangers caused by walls, columns, beams, concrete slabs or frames may constitute structural damage and lead to the collapse of the whole house.

3.6. 1.3 Dangers caused by roof trusses and purlins may lead to the collapse of the whole roof and endanger the whole house.

3.6. 1.4 The dangers caused by pipe arch, flat shell and corrugated pipe arch may lead to the collapse of the whole arch and endanger the whole house.

3.6.2 Local dangerous houses

3.6.2. 1 Danger caused by foundation may endanger some houses and lead to partial collapse.

The dangers caused by walls, columns, beams and concrete slabs in 3.6.2.2 may form part of structural damage, leading to the collapse of local houses.

The danger caused by the roof truss and purlin in 3.6.2.3 may lead to the collapse of part of the roof or the whole roof without endangering the whole house.

The danger caused by joists in 3.6.2.4 may lead to the collapse of the whole floor.

The danger caused by cantilever members in 3.6.2.5 may lead to the collapse of beam and slab.

The dangers caused by the pipe arch, flat shell and corrugated pipe arch in 3.6.2.6 may lead to the partial collapse of the arch without endangering the whole house.

3.6.2.7 danger point refers to a single load-bearing component, or enclosure component, or construction equipment, which is in a dangerous state.

4 Handling of dangerous buildings and dangerous points

4. 1 The appraisal unit puts forward the basis of comprehensive analysis and comprehensive judgment, and reports it to the municipal real estate management department or its authorized unit for approval.

4.2 For dangerous buildings, the construction scheme shall be arranged according to the degree of danger, scope of influence and specific conditions.

4.3 For dangerous points, the danger should be eliminated in time in combination with normal maintenance.

4.4 For dangerous houses and dangerous points, effective measures should be taken to ensure the safety of residence after investigation and confirmation.

5. Classification of housing risk assessment grades

Grade A: the bearing capacity of the structure can meet the requirements of normal use, there is no danger point of decay, and the building structure is safe.

Grade B: the bearing capacity of the structure basically meets the requirements of normal use, and individual structural members are in a dangerous state, but it does not affect the main structure and basically meets the requirements of normal use.

Grade C: The bearing capacity of some load-bearing structures can not meet the requirements of normal use, resulting in local danger, which constitutes a local dangerous building.

Grade D: The bearing capacity of the load-bearing structure can no longer meet the requirements of normal use, and the whole house is in danger, which constitutes a whole dangerous house.