According to the analysis of residential projects we have been responsible for in the past, the common cracks in residential projects are divided according to the main parts of their production, mainly including beam and plate cracking, wall column cracking, etc. This article will introduce the common cracking conditions of residential engineering in detail, and I hope you will have a more comprehensive understanding of the cracking situation of residential engineering. 1. Cracking of beams and plates 1The common crack form of beam cracked concrete beam body is oblique crack, and its form is generally 45 degree angle or other angles, and the number and length of oblique cracks are usually related to the force size and load distribution of the beam. 
2.The common forms of cracks in concrete floor slabs of residential engineering include: local penetration cracks, cracks along the embedded pipeline, oblique cracks at the corners, irregular cracks, etc. 2.1 Local penetrating cracks: usually in the range of 1 3 in the middle of the span, mostly appear on the lower surface of the plate, and some penetrate up and down. 
2.2. Cracks along the embedded pipeline: most of them appear on the surface of the lower plate, and some of them are connected up and down. 
2.3 Oblique Cracks at the Corners: Diagonal cracks that appear in the four corners of the room. 
2.4. Irregular cracks: irregular distribution and trend, generally incoherent surface microcracks. 
Second, the cracking of the wall columns, the cracking of the wall can be divided into the cracking of the inner wall and the cracking of the external wall according to different partsColumn cracks are often seen as vertical cracks. 1.Interior wall cracksInternal wall cracks can be divided into structural cracks and decorative cracks according to the cause of cracks. Structural cracks can be divided into horizontal cracks and vertical cracks according to different partsDecorative cracks are often cracks in the plastering layer. 1.1. Horizontal cracks: often occur in the junction of the wall and the floor, the junction of the wall and the beam, the junction of the wall and the door frame, etc., and the "eight" shaped cracks are mostly at the openings of doors and windows. 
1.2 Vertical cracks: often occur at the edge of beams or columns, or in lightweight partition panel walls. 
1.3 Cracks in the plastering layer of interior walls
2.Exterior wall crackingExterior wall cracking can be divided into structural cracks and decorative cracks according to the cause of cracks. Structural cracks of external walls mostly occur in the window openings, reserved openings and other parts of external walls, and the common crack form is a "figure-eight" crack;Decorative cracks are often cracks in the plastering layer. 2.1 Structural cracks in exterior walls
2.2 Cracking of the exterior wall plastering layer.
3.Column cracking.
Under the long-term action of the upper load, vertical cracks often appear at the junction of the column and the beam, the corner of the column and other parts.
The above is the summary of the Wuli reinforcement test about the common cracking conditions of residential projects. Cracking in residential engineering is a common but not negligible problem. By understanding the causes of cracking, we can reduce the risk of cracking at the source and take appropriate measures to address it. Only with the best construction quality, we can truly enjoy a safe and comfortable living environment.
I hope that through this article, you will have a deeper understanding of the cracking situation of residential projects. For more analysis of related problems, please pay attention to the Wuli Reinforcement Detection Baijia and **, so that more people can understand and pay attention to the cracking problem in residential projects.