Modular Settings for Prefabricated Modular Housing

The modular settings for prefabricated modular housing typically adhere to a unified modular coordination principle to achieve efficient and high-quality construction. The specifics are as follows:

1. Basic Modular Units
   The modular system for prefabricated modular housing centers around basic modular units, with two common standards:

• Based on 3M (300mm) or 6M (600mm): Some standards directly adopt integer multiples of 300mm or 600mm as basic modular units, simplifying calculations and aligning with common building dimensions.
• Expanded from 1M (100mm): Other standards explicitly use 100mm as the basic modular unit, constructing a complete sequence through expanded modules (e.g., 2m, 3m) and sub-modules (e.g., m/2, m/5) to cover multi-level needs from microscopic components to macroscopic spaces. For example, window and door opening widths may adopt dimensions like 1.5m (15M) or 2.1m (21M).

2. Component Dimension Design
   All building component dimensions must strictly adhere to modular multiples to ensure standardized production and assembly compatibility:

• Bay and Depth: Common dimensions are 3.3m, 3.6m, and 3.9m (incremented by 300mm), avoiding material waste caused by non-standard dimensions.
• Floor Height: Priority is given to modular heights like 2.8m and 3.0m, aligning with standardized floor slabs, doors, windows, and equipment piping layouts.
• Window and Door Openings: Widths and heights must conform to modular sequences, with standards like Hubei's 'Residential Building Modular Design Standard' specifying preferred dimensions to reduce on-site cutting requirements.

3. Modular System Construction
   Achieving 'fewer specifications, more combinations' through hierarchical modular design:

• Hierarchical Decomposition: Residences are broken down into hierarchical modules such as residential units, interior spaces, functional spaces (e.g., bedrooms, kitchens), and components (wall panels, floor slabs), with unified modular dimensions at each level.
• Universality and Interchangeability: Modules at the same level (e.g., kitchen modules in different apartment types) must have consistent dimensions for flexible replacement; modules at different levels (e.g., functional spaces and components) must have coordinated boundary conditions for seamless integration.

4. Modular Coordination Objectives
   The core goal of modular settings is to achieve whole-industry-chain collaboration:

• Design-Production-Construction Integration: Unified modules ensure that design dimensions can be directly translated into production drawings, with precise positioning during construction to minimize error accumulation.
• Component Standardization and Reduction: By optimizing modular dimensions, the variety of components is minimized, reducing mold costs and inventory pressure.
• Interchangeability and Installation Efficiency: Standardized interface designs enable quick positioning and installation of components, improving construction speed and quality.