Ninghai Prefabricated Panel House

Prefabricated panel houses in Ninghai have leakage issues and structural safety hazards.

Leakage Issues

There are a large number of multi-story prefabricated panel residential buildings in Ninghai County that were relocated and settled in the early years. These houses face relatively serious leakage problems. On the one hand, due to the early construction time, the waterproof layers in the expansion joints between the panels have aged and fractured. The original function of the waterproof layer is to prevent water penetration. When it ages and fractures, it loses its due waterproofing function, leading to weathering and water seepage in the exterior walls. The long-term erosion of the exterior walls by rainwater not only affects the appearance of the house but also causes damage to the wall structure and reduces the durability of the house. On the other hand, some areas in Ninghai are located in coastal and low-lying areas along three rivers. These special geographical environments cause capillary saline-alkali water to continuously rise. The long-term erosion of the walls by saline-alkali water can result in large-scale salt efflorescence and nitrate formation. Salt efflorescence and nitrate formation make the surface of the walls loose and reduce their strength, further affecting the structural safety of the house. Moreover, during the plum rain season, the high humidity in the air provides favorable conditions for the growth of mold. The rapid and large-scale growth of mold not only produces unpleasant odors, affecting the comfort of the living environment, but may also pose health risks to humans, such as triggering respiratory diseases.

House Structural Issues

In a house renovation and reinforcement case in Ninghai, when renovating a prefabricated panel house, an owner knocked down a shear wall and a load-bearing column on the first floor. Shear walls and load-bearing columns are important components of the house structure. They bear the vertical and horizontal loads of the house and play a crucial role in ensuring the stability and safety of the house. Knocking down shear walls and load-bearing columns will damage the overall structural system of the house, reduce its load-bearing capacity, and may lead to serious consequences such as cracks, deformation, and even collapse of the house. The property management company's requirement for the owner to restore and reinforce the house is a very necessary measure. By restoring the removed structural components and carrying out reinforcement treatment, the structural performance of the house can be restored, and the lives and property safety of the residents can be guaranteed.