Single-Story Prefabricated Panel House

A single-story prefabricated panel house is a building constructed primarily using prefabricated panels. These panels are cement components prefabricated in factories and come in two types: solid and hollow. They originated in the early 20th century, and many residential buildings constructed in China before 1985 adopted this structural type.

Characteristics of Prefabricated Panel Houses

Prefabricated panels are made in factories by nailing wooden models, arranging steel bars, and pouring cement. Hollow prefabricated panels achieve lightweighting by reducing the non-load-bearing concrete. This building form was widely used in the early days, but existing prefabricated panel houses have some obvious problems. Weak earthquake resistance is a prominent issue. Due to relatively low early design and construction standards, their structures have limited resistance when facing natural disasters such as earthquakes. Poor sound insulation and thermal insulation performance are also common problems. The gaps between prefabricated panels and the characteristics of the materials themselves allow external noise to easily enter the interior, while indoor heat is also easily lost, affecting living comfort.

Service Life and Disposal Methods

Ordinary civil residences are generally designed with a 50-year working life, and prefabricated panel houses are managed under the same criteria. 30 years is not a mandatory scrapping line. Whether a house needs to be demolished depends on the results of professional safety appraisals. The appraisal results are divided into four grades: A, B, C, and D. Houses graded A or B can be used normally; houses graded C require partial reinforcement to improve their safety and stability; only houses graded D will be treated as dangerous buildings and require measures such as demolition and reconstruction.

Foundation Damp-Proofing Methods for Rural Self-Built Houses

In the context of rural self-built houses, if a single-story house uses prefabricated panels, a mainstream method for foundation damp-proofing is to create a prefabricated panel suspended floor on the ground ring beam. The damp-proofing principle is 'exchanging space for dryness.' A cavity of 30 - 50 centimeters is left between the foundation and the first-floor ground. Underground moisture rises into the cavity and then dissipates, unable to reach the first-floor ground. The specific method is to control the height of the backfill soil at a distance of 30 - 50 centimeters from the ground after the ground beam is poured, compact the backfill soil, and then lay the prefabricated panels, effectively preventing the impact of underground moisture on the indoor environment.