Zhengding Prefabricated Houses

Zhengding prefabricated houses, mainly consisting of prefabricated light-steel villas, are known for their efficient construction and eco-friendliness, but they must strictly adhere to policy regulations and material selection standards.

I. Core Advantages and Structural Features

The prefabricated light-steel villas in rural areas of Zhengding County adopt a "factory prefabrication, on-site assembly" model, which shortens the construction period by nearly half compared to traditional brick-and-mortar houses and reduces on-site dust and construction waste, aligning with the concept of green construction. The structure uses thin-walled steel as the framework (with a typical frame spacing of 60 centimeters), paired with prefabricated wall panels, roofs, and other components. For example, the exterior wall panels are composite prefabricated parts made of "thermal insulation cotton + OSB board + decorative panel", which are directly assembled after being formed in the factory; the roof is designed as a pitched roof (with a slope of 20°-30°), taking into account both drainage and the need for snow to slide off in winter.

II. Policy Adaptation Requirements

1. Planning Restrictions: Two-story light-steel villas must not exceed an area of 200 square meters, and the eave height should be controlled within 7 meters (excluding roof slope height). If the site is near a historical and cultural district, the exterior facade should adopt subdued colors such as light gray or off-white, and gray tiles or dark gray color-coated steel sheets should be preferred for the roof.
2. Approval Process: Before construction, an application for a Rural Construction Planning Permit must be submitted to the township people's government, along with proof of homestead use rights and a design plan (which must indicate the prefabrication ratio of components and the form of connection nodes). The plan must be approved before component production can begin, and construction without approval or exceeding the designed area is strictly prohibited.
3. Public Announcement and Opinion Solicitation: The plan must solicit opinions from neighboring residents and be publicly announced by the village (residential) committee for 7 days without objection before proceeding to the component prefabrication stage.

III. Component Selection and Safety Standards

1. Light-Steel Framework: It must undergo hot-dip galvanizing treatment with a zinc layer thickness of not less than 85 micrometers to prevent corrosion in humid environments.
2. Fire-Resistant Materials: Prefabricated exterior wall panels and roof tiles must use materials with a Class A fire rating, such as rock wool thermal insulation cotton and fire-resistant OSB boards, to avoid safety hazards caused by winter heating.
3. Numbering Management: All prefabricated components must be numbered in the factory and marked with their installation positions to ensure precise on-site assembly.

IV. Market Price Reference

The price of a one-story prefabricated light-steel rural house in the Shijiazhuang area of Hebei Province is approximately 1280 yuan per square meter, and the price of a three-room light-steel villa is approximately 1270 yuan per square meter, with specific costs subject to fluctuations based on design complexity and material selection.