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Why does the construction of a house seriously affect the adjacent house? We all know that urban areas in Vietnam, especially in large urban areas such as Hanoi, Ho Chi Minh City, Hai Phong, are located on areas with weak geology with deep mud layer after the bearing clay layer. thickness from 3.5 to 7m. The old houses of 2, 3 floors are mostly located on shallow foundations and transmit directly into this soil layer.xaydungnhadephcm After many years, the balance system between the load-bearing capacity of the foundation and the building has stabilized. Just having an impact such as building a new building or even dismantling an existing one will disrupt this equilibrium and of course the construction of a house affects the adjacent house because of the impact on the ground as well. as the foundation system of the adjacent building. The ground may bud up (when dismantling buildings) or sink when new constructions appear. The settlement or budding of the foundation causes the adjacent structures to be affected. Affected adjacent structures will show signs such as cracks, broken walls, beams, floors or leaning all appearing before collapsing. Most of the serious problems while building a house arise from adjacent houses. If even the nailing stage has caused damage to the adjacent house, it is difficult for you to continue with other jobs smoothly, moreover, it costs a lot more compensation. Therefore, manicure is a stage that needs investment. Before doing the foundation, if you do not survey the geology as well as the adjacent works carefully, of course, building houses that affect adjacent houses is very easy to encounter risks. There are two types of foundation: shallow foundation and deep foundation (pile press or bored pile ). Shallow foundation such as foundation placed directly on the ground, bamboo poles, top-base foundation... has the advantage of simple construction, low cost and does not affect adjacent houses, but the disadvantage is poor load capacity. It is not possible to build multi-storey houses. With soft ground, if you build a house on 4 floors or more, you should not use shallow foundations. In the past, due to limited economic conditions, only low-rise buildings were built, most people used shallow foundations. However, the current trend is to use pile foundations. The most common is the pressed pile foundation, but how to avoid the construction of houses affecting adjacent houses when making pile foundations. The advantage of the pile foundation is that it can withstand large loads, allowing the construction of multi-storey houses. The disadvantage is that it is easy to cause adjacent houses to crack, sink, peel off the foundation, wear the foundation, move. Especially when building a house on hard ground, clay. The volume of concrete block pressed down will raise the soil mass, compressing the adjacent house, creating a strong impact force. If the adjacent house uses shallow foundation, the risk of impact is greater.