<h1 class= "pgc-h-arrow-right" > asks: What are the reasons for cracks in farmers' self-built houses, in addition to the well-known uneven settlement? </h1>
Cracks in the walls of farmhouses are so many that they need to be carefully analyzed.
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Cracks in the house are normal, not to mention the farmer's self-built farmhouse, even the building (structure) undertaken by qualified professional construction units will inevitably produce some cracks. Some cracks are irrelevant, and some cracks are related to structural safety, which must not be taken lightly, especially in rural self-built houses that are almost not included in the supervision of the quality and safety system, and the cause of the cracks should be identified in time to do a good job in responding to them.
When it comes to cracks in rural self-built houses, it is easy for everyone to think of uneven settlement, and uneven settlement is mostly due to the foundation being not solid. Specifically, the reason why the foundation is not solid is as follows: First, the foundation of the house is selected on soft soil such as farmland; second, the foundation is not dug into the holding layer in order to save money; third, the quality of the house base is inconsistent, some corners are soft and some are hard; fourth, the foundation is not solid.
In addition, what other reasons lead to cracks in farmers' self-built houses? A simple analysis of the jacaranda is one or two.
<h1 class="pgc-h-arrow-right" >, missing ring beams and structural columns</h1>
It is true that many farmhouses with no ring beams and structural columns have lived for decades without any problems, and although it is a good thing that there is no problem, it cannot negate the role of the circle beams and structural columns accordingly. We know that the circle beam and the structural column play a skeleton role, which can increase the integrity of the house and disperse the bearing capacity of the part.
The second floor of rural self-built houses likes to seal the terrace that should be used as the eaves of the first floor to increase the area, and even to pick too much, thus forming a top-heavy situation. In some areas, the stress is concentrated, and the ring beams and structural columns are missing, and the longitudinal force of the wall is uneven and cracks appear.
<h1 class="pgc-h-arrow-right" > two, construction on a large solar day</h1>
Building a house depends on the weather, not in storms, nor on big sun days. Now rural self-built houses like to be cast in situ, the floor slab is at least 10 centimeters thick, and the cross-sectional height of the beam is higher. Sun exposure causes the moisture to increase rapidly on the outside of the concrete while the interior is slow, and the difference between the inside and outside causes cracks.
<h1 class="pgc-h-arrow-right" > third, self-mixing concrete is too thin</h1>
Rural self-built houses like on-site self-mixed concrete, and rural masters rely on experience, and it is difficult to achieve the accurate height of concrete in the proportion control of artificial self-mixed concrete, and too much water is added to make the water content of concrete too high. The high water content makes the density decrease due to excessive water loss after solidification, and cracks appear due to the increase of particle tension. In order to avoid this situation, the moisture content should be reasonably controlled, and if necessary, a water reducer can be added.
<h1 class= "pgc-h-arrow-right" > fourth, the house was not built according to the requirements of fortification intensity</h1>
There are few designs for rural self-built houses, and rural masters sketch and put lines on the spot according to the needs of the main family or their own experience, not to mention the design of earthquake prevention strategies. The seismic needs of different regions are different, and the seismic requirements for buildings are different. The seismic requirements for buildings in areas of 6 degrees, 7 degrees and 8 degrees of fortification intensity are obviously different.
In addition to the rural masters not deeply considering the seismic strategy, it is also related to the random use of online drawings. The finished drawings on the Internet are not necessarily universal, and the drawings designed by the designer according to the 7-level fortification intensity can certainly not be applied in the 8-level fortification intensity area.
The above is a brief analysis of the reasons for the total cracks in farmers' self-built houses, and it is expected to be adopted.