Introduction of light steel villa prefabricated house

I. Structural System and Material Characteristics

Main Structure

Adopting G550 grade aluminum-zinc-plated cold-formed thin-walled light steel keel (thickness 0.8-1.0mm, yield strength ≥550MPa), corrosion-resistant life of ≥50 years, the main body weight is only 1/5 of traditional brick-concrete (about 30-40kg/m²).

The frame is connected by C-type/U-type steel members and self-tapping screws, supporting 2-6 storey buildings with flexible expansion of planar or vertical space.

Composite wall and roof systems

Wall: OSB board + fiberglass wool (capacity 15kg/m³) + calcium silicate board Sandwich structure, total thickness 120-200mm, heat transfer coefficient ≤0.3W/(m²-K), sound insulation ≥65dB Roofing: with glass fiber tires.

Roof: containing glass fiber tire asphalt shingle + SBS waterproofing membrane + OSB board, with EPS insulation layer (thickness ≥ 50mm), supporting large-span design (maximum 36m).

II. Expandability Design

Modularized Layout

By adding or subtracting standardized steel components Adjusting the house type, supporting open space or independent functional partition (e.g., adding bedrooms and terraces), the actual use area is increased by 10%-15%.

Adopting dry construction method, no need for wet work, the extension construction cycle is shortened to 1/3 of that of traditional buildings (about 7-10 days for single-storey extension).

Flexibility and terrain adaptation

Supports pile foundation or overhead design, adapting to complex terrain such as mountains and wetlands, and reducing the damage to the landscape caused by earthmoving.

The appearance can be customized as sloped roof, imitation wood grain panels or modern curtain wall, which naturally integrates with the surrounding environment.

III. Detailed Technical Parameters

Seismic performance: Seismic intensity 9, main body deformation ≤ 1/300 storey height.

Wind resistance performance: can withstand grade 12 typhoon (wind speed ≥ 32.7m/s)

Fireproof grade: Class A fireproof, wall fireproof limit ≥ 1.5 hours 38

Thermal insulation performance: heat transfer coefficient ≤ 0.3W/(m²-K), indoor and outdoor temperature difference ≤ 3℃.

Construction cycle: 288 square meters three-story villa total construction period of about 30 days (including foundation and decoration)

Comprehensive cost: 1300-2200 yuan / square meter (including the foundation and decoration)

IV. Application Scene and Advantages

Rural self-built house: single-storey to three-storey extension, with courtyard and photovoltaic roof Cost reduction of 20%, construction period shortened by 70%.

Scenic B&B: modularized splicing design, integration of vertical greening and smart home, reducing ecological interference by 90%.

Urban townhouse: large-width glass curtain wall + roof terrace, support for later addition of floors Space utilization rate increased by 15%.

V. Typical Expansion Cases

Case 1: A three-story villa with an opening of 12m and a depth of 8m is extended to four floors by adding wing modules, with a new area of 96m2 and a total cost of about 120,000 RMB.

Case 2: single-story light steel villa with independent garage and sun room added at a later stage, using the same material of steel + OSB board, the construction period of only 15 days

VI. Light steel villa in urban and rural application differences

Rural application

Personalized customization: light steel villa can flexibly adjust the house type to meet the needs of multi-generation (e.g., adding independent kitchen, storage room for agricultural tools), and match with the courtyard, vegetable garden and other countryside characteristics of the functional area.

Integration of traditional styles: the exterior is mostly designed with imitation wood grain hanging boards and sloping roofs to harmonize with the natural landscape (e.g., the Handan project uses small green tiles with white real stone paint).

Urban Applications

Efficient use of space: for compact plots, open layout + vertical expansion (e.g., adding mezzanine floors or terraces) is used to enhance space utilization.

Modern style dominance: preference for modern materials such as glass curtain walls and sculpted metal panels, combined with smart home systems (e.g. photovoltaic roofs, whole-house temperature control).

Contrasting dimensions

Foundation requirements: pile foundation is dominant in rural scenes, adapting to mountains/wetlands and reducing earth excavation; urban scenes need to meet high-rise building codes, often using concrete raft slab foundation

Construction period: about 45 days for a 200m2 villa in the rural scenario (including foundation and decoration); 30 days for the same area in the urban scenario (relying on factory prefabrication).

Seismic and wind resistance: Seismic level 8 for rural scenario, wind resistance of 70m/s (to meet the needs of rural low-rise); urban scenarios need to meet the standards of seismic level 9 + 12 typhoon (multi-storey building requirements)

Why Choose Us

Shijiazhuang Eiffel Steel Structure Co., Ltd.

Shijiazhuang Eiffel Steel Structure Co., Ltd. is an enterprise dedicated to researching and developing new energy-saving and environmentally friendly houses and construction methods. We always adhere to the values of honesty and quality first, and position ourselves as a leader in high-quality steel structure villa construction. We combine emerging foreign technologies with the actual domestic market and provide customers with one-stop services for prefabricated buildings such as design, production, interior decoration, and whole house customization. The prefabricated buildings produced by the company are widely used in office buildings, villas, rural courtyards, estate clubs, tourist attractions, homestays, hotels, public facilities, etc. 

At present, the company is centered in Shijiazhuang, Hebei Province, with products radiating to regions such as Beijing, Tianjin, Hebei, Shanxi, Shandong, Henan, Liaoning, Mongolia, Jiangsu, Sichuan, and Guangxi, and exported to overseas markets. Adhering to the quality demand of "building a century old villa, choose Eiffel", we strive to create an excellent brand of prefabricated buildings.

House building process

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