According to the wall structure, concrete floor and masonry have the function of mutual restraint. Therefore, when the outside temperature changes, the pavement and masonry are likely to be deformed due to the temperature, and the masonry itself has the driving force and shear stress of the specified value. When the compressive strength of temperature exceeds this limit, cracks will occur in masonry, which is called temperature cracks.
Basically uneven, not firm, basically not deep. Most self-built houses in rural areas need to be built with four layers of building steel bars, two layers of foundation and three layers of mortar bricks, two layers of laminated strips are built on the windows, the sand poured into the windows is removed from the three layers of bricks, and other walls are sealed with mortar, which can also ensure the vaporization of the wall after completion and prevent cracks in the wall. Therefore, there are some things in daily life that we can only understand according to practical activities. For this crack, ELA should not easily bring harm to daily life. If a house is built of sand and concrete, how can it last for decades? Improve the monitoring.
Finally, rural self-built houses should not be formulated and built according to the experience of local craftsmen, but should be built according to standards, or look around the house first, master the soil structure, build a house for one year and live for two years, and be careless. The family is in danger at home. Some soil layers with poor soil quality should also be piled up, generally 6 meters deep and 2 meters deep. The foundation is not firm, which leads to uneven settlement of the foundation, cracks in the wall that cannot be repaired, and problems with the bricks used, such as block bricks or other lime powder sand piles. In the process of engineering construction, it is necessary to add building steel bars to bricks, which are not commonly used by individuals, but this situation is very rare on red bricks.
I have a good friend from Guizhou, whom I met when I was working in Guangdong, and they have a very good relationship. One year, he went home early. After a period of groping, he learned that he had gone home and built a house. There are mountains over there. The house was built on a hillside, and the foundation was dug by hand. The infrastructure of the house directly affects the quality of a good prenatal and postnatal care futures trading garden. Although many houses now have soil beams, soil columns and soil ring beams, cracks will still appear in the walls that can't climb up. The cracks are straight, but not messy. This situation is due to the lack of cement mortar between the wall and the concrete column.