What are the contents of on-site inspection of steel factory buildings?

The on-site inspection of steel factory buildings should include the following work contents:

1. Collect design drawings, construction records, construction acceptance, engineering geological survey reports and other materials for the construction of steel structure factory under inspection.

2. According to the drawings provided by the entrusting party, on-site investigation whether the structural layout and scale of the inspected steel factory buildings are consistent with the drawings, and whether there are changes in the use and load of the factory buildings during operation, etc.

3. On-site inspection of the structural status of the steel structure factory building. In this process, full inspection or random sampling inspection can be used. Its inspection items include structural appearance defect inspection, steel hardness inspection, component connection inspection, fireproof coating thickness inspection, anti-corrosion coating thickness inspection, structural member scale deviation, structural member deformation inspection, and plant foundation status investigation.

The inspection of industrial steel structure factory is a problem that every manager needs to pay attention to, and the inspection of steel structure workshop should be carried out regularly.

In the process of use, if there is a process transformation or structural transformation of the factory building, it is necessary to judge the safety and earthquake resistance of the factory building. After re-checking the structure and bearing capacity of the steel factory buildings and modeling and accounting, etc., we can learn more about the safety of the main structure of the steel factory buildings, provide comprehensive and detailed data for the later factory building renovation, and ensure the structural safety and the smooth progress of the later renovation.

When inspecting the steel structure cement construction, it is necessary to understand the method of concrete utilization and make detailed judgments correspondingly. In residential buildings, concrete structures can be seen everywhere. Concrete is ubiquitous in steel wall and roof structures. For the inspection of steel-concrete buildings, the practical work should be carried out in the following ways:

• 1. Conduct on-site surveying and mapping of the structure and frame elevations. Draw the plan of the steel structure and the elevation of the frame.
• 2. Judgment of the proportion of concrete structure components. Generally speaking, the ratio of steel bars to concrete in building walls should be 1:2 or 1.2.5 to meet residents’ requirements for wall strength and durability. According to this requirement, the judge has a reasonable basis for determining the proportion of concrete structure components.
• 3. Identify the material of concrete columns or beams. If the concrete structure tilts and cracks during the steel structure inspection process, this steel structure can be called a dangerous building.
• 4. Determination of the bearing capacity of concrete structures. In the residential structure, the concrete structure does not exist independently, but is combined with masonry and steel, and its existence can effectively control the service life of the concrete structure.
• 5. Carry out masonry structure judgment on steel structure. Judges need to evaluate masonry structures from three aspects: seismic performance, anti-inclination, and wind resistance.