Other standards for unsafe building assessment

Section 1: Beam Specifications

1. Single girder or the central part of a connected girder may exhibit transverse cracking, possibly extending upwards to more than 3/2 of the girder's height, with the protective layer falling off. Accompanying this are vertical cracks.

2. Significant vertical or diagonal cracks appear at the fixed end of the frame beam, or interlaced cracks occur.

3. Significant diagonal cracks appear at the ends of simply supported beams and continuous beams, and significant vertical or diagonal cracks appear at the roots of the cantilevers.

4. Cracks appear around the perimeter of the trowel board or interlaced cracks on the bottom.

5. Significant vertical cracks have appeared beneath the prefabricated board.

6. Various board protective layers have fallen off, over half of the main steel bars are exposed, severe rusting, and cross-sectional reduction.

7. Various beams and plates exhibit deflection exceeding 1/150 of their span, and cracks in the tension zone are wider than 1mm.

8. Vertical through cracks appear in prestressed prefabricated panels; or the end concrete is loose, exposing steel reinforcement, with a length exceeding 100% of the main reinforcement.

Section 2: Wall Column Specifications

1. There are significant interlaced cracks in the center of the wall, possibly accompanied by the detachment of the protective layer.

2. Cracks in wall columns or the falling off of protective layers. The primary issue is the exposed steel reinforcement, or the presence of significant horizontal cracks, crushing, etc.

3. Columns and walls with concrete spalling, carbonation, and bulging; the damaged area exceeds one-third of the total area, with the main steel exposed, severely corroded, and the cross-section reduced.

4. Columns and walls exhibit tilting, with the tilt exceeding 1/100 of their height.