How to Draw Diagrams for Prefabricated Concrete Houses

The construction of prefabricated concrete houses involves mold casting, transportation and hoisting, on-site assembly, and customized adjustments. The specific steps are as follows:

1. Mold Casting Stage: Factory-Prefabricated Core Components

Concrete is poured into custom molds in the factory and accelerated for demolding through steam curing, forming complete house components (such as walls and floors). The mold sizes are flexible, with a minimum custom size of 3 meters × 6 meters and a maximum of 3.6 meters × 7.2 meters, adjustable every 10 centimeters in between to meet different housing layout requirements. At this stage, strict control over the concrete mix ratio and curing time is necessary to ensure the components meet strength standards. (Diagram logic: Imagine the scene of concrete being poured into molds and then steam-demolded, similar to the production of prefabricated parts on an industrial assembly line.)

2. Transportation and Hoisting Stage: Transferring Components to the Construction Site

Prefabricated components are transported to the site by trucks and assembled layer by layer according to design drawings using cranes. For example, the hoisting case of Mr. He's villa in Shaoshan shows that components such as walls and floors need to be hoisted in coordination and precisely docked by adjusting angles. The hoisting sequence is usually: foundation components → walls → floors → roofs. It is necessary to plan transportation routes and crane positions in advance to avoid component collisions or deformations. (Diagram logic: Refer to the scene of a crane hoisting walls to designated positions and floors being bolted to walls, similar to an assembly diagram for prefabricated buildings.)

3. On-Site Assembly Details: Mechanically-Dominated Efficient Connections

Components are fixed through bolts, welding, or embedded parts to form multi-room and multi-hall structures. In a rural case in Henan, machine-assisted assembly replaced traditional manual bricklaying, increasing efficiency by more than 50%. Key steps include:

• Positioning and calibration: Using laser levels to ensure the verticality and flatness of components;
• Connection and reinforcement: High-strength bolts are used between walls and floors, with welding for additional strength if necessary;
• Sealing treatment: Filling waterproof mortar or sealant at component joints to prevent leakage. (Diagram logic: Imagine on-site photos of workers operating machinery to assemble components and bolt them together, highlighting the characteristics of mechanized operations.)

4. Customized Adjustments: Flexible Modification of Layout and Function

Modify the positions of doors and windows or adjust room layouts according to needs. The flexibility of the molds supports such modifications. For example, openings can be cut in prefabricated walls to install doors and windows, or balconies can be extended by adding connectors. Precautions:

• Modifications should be completed during the factory prefabrication stage, as on-site changes are costly;
• Communication with designers is necessary to ensure structural safety and compliance with building codes. (Diagram logic: Refer to schematic diagrams of cutting door and window openings in prefabricated components and adding connectors, demonstrating customized flexibility.)

Tip: For specific construction drawings, it is recommended to contact prefabricated house manufacturers to obtain design catalogs or refer to national standard atlases for prefabricated buildings (such as GB/T 51231-2016) to ensure the construction process complies with regulatory requirements.