Specifications for Exterior Design of Prefabricated Houses

The specifications for the exterior design of prefabricated houses cover multiple aspects, including overall design, facade design, color, lighting, decoration, as well as special regulatory clauses and technical parameters. Details are as follows:

Overall Design Requirements:
The design of prefabricated houses must strictly adhere to local urban planning, architectural design standards, and aesthetic criteria. It should integrate building purposes, regional culture, surrounding environment, and functional requirements to ensure harmony with natural or urban landscapes while reflecting unique identity. Priority should be given to renewable materials (such as bamboo and recycled metals) and green building technologies (such as solar panels and rainwater harvesting systems). By optimizing building forms and structural layouts, energy efficiency and environmental friendliness can be enhanced while meeting functional needs. For example, double-glazed curtain walls can be used in cold regions to enhance thermal insulation, while shading elements can reduce heat loads in tropical areas.

Facade Design Requirements:
Material selection should match the overall style; for instance, modern styles may use combinations of glass and metal, while traditional styles may employ stone or faux wood materials. Consideration should also be given to material durability, maintenance costs, and environmental impact. Facade shapes should emphasize proportional harmony, avoiding visual clutter caused by overly complex lines. Modular design can achieve a balance between standardization and personalization. Detail treatments should balance aesthetics and safety, such as using thermal-break aluminum frames for windows, installing non-slip flooring on porches, and ensuring railings are at least 1.1 meters high with gaps less than 11 centimeters to prevent child climbing.

Color, Lighting, and Decoration Requirements:
Color schemes should either contrast with or complement the surrounding environment; for example, cool tones can reduce visibility in industrial areas, while warm tones enhance affinity in residential areas. Natural light utilization should be achieved through rational window placement (such as large south-facing windows and high north-facing windows) for passive lighting. Artificial lighting should be layered (ambient, task, and accent lighting); for example, motion-sensor lights at entrances enhance safety, while ground lights in courtyards create a cozy atmosphere. Decoration details should avoid excessive clutter, reflecting uniqueness through local carvings, corporate logos, or cultural symbols, while ensuring secure connections between decorative materials and the main structure.

Special Regulatory Clauses and Technical Parameters:
For sound insulation, the airborne sound insulation of party walls should be ≥50 decibels, and the impact sound pressure level of floors should be ≤65 decibels. Sound bridges at joints can be eliminated using elastic pads or double-layer structures. Durability requirements specify a design life of 50 years in normal climatic zones, reduced to 35-40 years in coastal or freeze-thaw zones, with anti-corrosion coating thicknesses of ≥30 micrometers (not 30 millimeters; note unit accuracy) in exposed environments. Fire safety regulations specify fire resistance limits for prefabricated concrete components: ≥3 hours for load-bearing walls, ≥2 hours for non-load-bearing walls, and ≥1.5 hours for floors. Steel structures must be coated with fire-resistant paint or fitted with fireproof boards to ensure structural stability during fires.