Structural Drawings of Concrete Prefabricated Houses

Currently, structural drawings of concrete prefabricated houses cannot be provided directly, but the following information can assist in understanding their design logic and acquisition methods:

1. Reference to Typical Project Cases
The project at the Changzhou Prefabrication Plant of Peifeng Green Construction in Jiangsu demonstrates the floor plan layout design of a fully prefabricated concrete factory (Figure 1). The core logic involves the standardized production of modular prefabricated components and dry connection techniques to achieve rapid construction of the factory structure. Drawings for such projects typically include spatial planning for the prefabricated component production line, layout of component stacking areas and transportation corridors, as well as detailed local drawings of node connection methods, reflecting the optimization of structural efficiency through industrialized production.

2. Classification of Prefabricated Concrete Structural Systems
The structural design of prefabricated houses must be selected based on specific systems:

• Exterior Wall Panel System: Utilizes prefabricated concrete wall panels as the exterior enclosure structure, connected to the main frame via bolts or welding, achieving separation between the building facade and load-bearing structure.
• Prefabricated Frame System: Forms a frame with prefabricated columns and beams connected through sleeve grouting or mechanical connections, with floor slabs using laminated or fully prefabricated panels, suitable for multi-story public buildings.
• Prefabricated Shear Wall System: Uses prefabricated shear walls as the primary lateral force-resisting components, achieving integrity through vertical reinforcement connections and horizontal joint grouting, commonly used in high-rise residential buildings.
  Structural drawings for different systems must focus on displaying the assembly methods of prefabricated components, connection node details, and load transfer paths.

3. Standardized Illustrations of Prefabricated Components
The structural details of common prefabricated components can be understood through standardized illustrations:

• Prefabricated Columns: Equipped with grouting sleeves or metal corrugated pipes at the bottom for reinforcement connection with the foundation or upper columns.
• Laminated Floor Slabs: Composed of a prefabricated base plate and a cast-in-place layer, with the prefabricated part typically having a thickness of 60mm, and the cast-in-place layer thickness adjusted according to the span.
• Stair Flights: Adopt L-shaped or U-shaped cross-sections, with bolt holes or welded steel plates reserved at both ends for fixation with the platform beams.
  These illustrations are usually drawn at a scale of 1:10 to 1:20, indicating reinforcement configurations, cover thickness, and the positions of embedded parts.

4. Methods for Acquiring Structural Drawings
If specific drawings are required, it is recommended to proceed through the following methods:

• Consult professional technical literature such as '54 Diagrams: The Most Comprehensive Summary of Assembled Monolithic Concrete Structural Systems', which includes schematic diagrams of system classifications and detailed node drawings.
• Contact prefabricated component manufacturers or design institutes to obtain engineering case drawings (subject to signing a confidentiality agreement).
• Refer to national architectural standard design atlases (such as 15G366-1 'Truss Reinforced Concrete Laminated Slabs'), which include standardized designs for common components.

Note: Structural drawings of concrete prefabricated houses must be customized based on building functions, seismic fortification levels, and construction conditions. In practical applications, load calculations and node verifications must be completed by structural engineers.