Integrated Prefabricated House Construction Guide

The construction of integrated prefabricated houses requires selecting either modular container houses or standardized modular integrated house processes based on the design type. The specific steps are as follows:

I. Modular Container House Construction Process

1. Bottom Frame Installation

   • Connect the lower corner fittings to the bottom sill, secure them with bolts, and then place 10 40x80x2960mm purlins and 4 auxiliary strips, connecting them to the bottom sill with bolts. Measure the diagonals to ensure the frame is vertical, and temporarily do not tighten the bolts when installing the columns to allow for adjustments.
   • Lay MGO boards and reserve gaps for wall panels. Use instruments to level the ground, then connect the top frame and gradually tighten the bolts to the design torque value.

2. Main Structure Assembly

   • Install the top short beams and upper corner fittings, use a level to correct the verticality of the columns, and provide temporary support with top purlins. When fixing the drainage channels and downspouts, reinforce them every 25cm with self-drilling screws and seal the connections with glue to prevent leakage.

3. Enclosure System Installation

   • Stick sealing strips on the inner sides of the columns and install the wall panels in sequence. For door and window positions, support them with wall panels on both sides and do not place them tightly against the columns to avoid deformation.
   • When installing the ceiling, if there are wall panels on both sides, add 30x50mm square tubes for fixation; if there are no wall panels, fix it directly to the top beam to ensure structural stability.

4. Internal Piping and Decoration

   • Drill holes in the walls for electrical wires, lay glass wool insulation, and then install roof tiles. When integrating electrical and plumbing systems, fill with insulation materials and test the pipeline pressure and circuit continuity to ensure normal functionality.

II. Standardized Modular Integrated House Construction Process

1. Factory Prefabrication and Transportation

   • The house modules are completed in the factory with steel structure welding, wall panel installation, plumbing and electrical pre-installation, and finishing. They are transported to the site using international shipping standard containers, reducing on-site construction time.

2. On-Site Assembly

   • Use a crane to position and lock the modules, and quickly interlock them with a precision connection system without the need for complex tools. For example, a retirement apartment project in the UK assembled 63 modules in just 14 days, improving efficiency by over 60% compared to traditional construction.

3. Final Adjustments and Commissioning

   • Install interior decoration panels, seal exposed seams and around doors and windows, clean the site, and then conduct a joint system commissioning, including functional tests of electrical, plumbing, and ventilation systems.

Key Considerations

• Connection Node Control: Ensure that the bolt torque meets the process requirements in modular design to avoid structural deformation due to uneven force distribution.
• Foundation Selection: Light steel structure houses should select strip foundations or integral slab foundations based on geological data to ensure the soil bearing capacity matches the design requirements.
• Integrated Interior Planning: If an integrated interior delivery solution is adopted, plan the electrical paths in advance to avoid noise issues later and omit secondary decoration steps.

Actual construction should adjust operational details based on specific design drawings and material parameters and strictly follow safety regulations.