Methods for Customizing the Size of Prefabricated Houses

Customizing the size of prefabricated houses requires considering factors such as purpose, site conditions, cost, and safety, and achieving personalized needs through modular adjustments. The specific methods are as follows:

1. Width Adjustment: Focusing on Site Constraints while Considering Functional Requirements
The width of prefabricated houses typically ranges from 3 meters to 4 meters, with increments of 10 centimeters (e.g., 3.1 meters, 3.2 meters) to accommodate the spatial constraints of different sites. For example, residential houses may choose a width of 3.3 meters to optimize the layout of bedrooms and living rooms, while small shops may adopt a width of 3.6 meters to increase display space. For special needs, such as large warehouses or industrial buildings, the width can exceed conventional limits, such as 7.2 meters or 7.6 meters, achieved through double-width or modular assembly for greater spans. Width design must consider transportation conditions to ensure that components are not restricted by height or width limits during road transportation.

2. Length Customization: Flexibly Matching Site Conditions and Functional Zoning
Length can be flexibly adjusted according to site length or functional requirements, with common dimensions such as 6.6 meters (outer diameter), and some projects support customization of longer lengths. For example, office buildings may adopt a length of 12 meters to divide independent office areas and conference rooms, while school classrooms may extend to 18 meters to meet the needs of teaching multiple students. Length design must consider structural stability to avoid load-bearing issues due to excessive spans, while ensuring the reasonable distribution of installation spaces (e.g., doors, windows, and pipelines).

3. Height and Number of Floors: Adapting to Functional and Climatic Needs
Height and the number of floors can be customized according to functional requirements, with single-story structures suitable for warehouses or temporary buildings, and double-story structures suitable for residential or office buildings. Height design must consider indoor clear height requirements (e.g., residential floor height is usually not less than 2.8 meters) and climatic conditions. For example, in hot regions, appropriately increasing floor height can improve ventilation; in cold regions, reducing floor height helps minimize heat loss. Double-story structures require enhanced floor slab load-bearing design and ensure that stair locations comply with safety regulations.

4. Design Considerations: Balancing Function, Geography, and Safety

• Architectural Functional Requirements: Residential buildings should prioritize planning private spaces such as bedrooms and kitchens, while offices require open layouts to support team collaboration.
• Geographical Location and Climate: Earthquake-prone areas should adopt earthquake-resistant structures (e.g., increasing the density of frame columns), while rainy areas should increase roof slopes to prevent water accumulation.
• Structural Safety: Designers must verify the rationality of dimensions in accordance with building codes (e.g., the Technical Specification for Prefabricated Concrete Structures) and ensure that component stresses are within material allowances through finite element analysis. For example, optimizing the window-to-wall ratio can reduce cold bridge effects and improve energy efficiency.

5. Cost and Efficiency: Balancing Modularity and Standardization
Customizing dimensions requires balancing personalized needs with production costs. Standardized dimensions (e.g., 3 meters × 6 meters) can reduce mold costs and construction periods, while non-standard dimensions (e.g., a width of 7.6 meters) may increase material waste and transportation difficulties. It is recommended to prioritize customization plans close to standard dimensions or achieve functional expansion through modular assembly to balance economy and flexibility.