Prefabricated House Construction Guide

The construction guide for prefabricated houses varies depending on the type. Common types include prefabricated houses (taking a South Korean rural case as an example), Chinese prefabricated modular houses, and prefabricated detachable container houses. Here are the specific construction steps:

Prefabricated Houses (South Korean Rural Case)

1. Foundation Treatment: Clear weeds and level the foundation. Use an excavator to dig foundation pits, and surveyors ensure the depth and height meet design requirements. After laying white plastic sheeting, pour the foundation with a concrete pump truck (no steel bars were used in this case).
2. Install Foundation Piles and Beams: After the concrete sets, install the foundation plates. Drill holes with a drill and secure them with expansion screws. Use a crane to install prefabricated foundation piles (about 5 tons each), assemble the beams like building blocks, adjust them with a level, secure them with nuts, fill gaps with foam glue, and seal the nuts with cement.
3. Backfill and Main Structure Construction: After backfilling soil to complete the foundation frame, quickly connect the beams using mortise-and-tenon joints, hoist the stairs, and lay a 5-centimeter-thick floor slab. Finally, grout all component gaps.

Chinese Prefabricated Modular Houses

1. Factory Production: Divide the house into independent standard modules (such as bedrooms, kitchens, and bathrooms). Complete steel structure welding, wall laying, pre-embedding of water and electricity pipelines, door and window installation, and fine decoration in the factory. The modules are shipped as fully furnished rooms with decoration, water, electricity, and accessories.
2. Transportation and Assembly: Transport the modules to the port via special flatbed trucks, adapting them to international standard shipping containers. Upon arrival at the construction site, use a crane to hoist the modules, align and lock them like LEGO blocks, and connect the water and electricity. For example, 63 sets of Chinese prefabricated elderly apartments purchased by the UK were assembled in just 14 days.

Prefabricated Detachable Container Houses

1. Bottom Frame Installation: Connect the lower corner fittings and bottom beams with bolts, place the battens and connect them to the bottom beams, and measure the diagonals to ensure verticality.
2. Column and Frame Connection: Connect the columns to the bottom frame, leaving the bolts slightly loose for movement. Lay MGO boards, leaving gaps for wall panels, measure the ground level, and adjust it with shims.
3. Top Frame Installation: Connect the upper corner fittings to the top longitudinal beams and tighten the bolts, then connect the upper corner fittings to the columns (leave the bolts slightly loose), and finally install the top transverse beams and measure the column verticality with a level.
4. Reinforcement and Adjustment: Install top short and long strips for reinforcement, install drainage channels and pipes, and seal them with glue.
5. Wall Panel and Ceiling Installation: Install the wall panels in sequence (pay attention to the positions of doors and windows), install the ceiling, and choose the fixing method according to the wall panel conditions.
6. Internal Decoration and Sealing: Drill holes in the walls to fix the wires, lay glass wool to the roof, install roof tiles, and fix them on the inner side of the drainage channels. Finally, paste sealing strips on the inner sides of the columns, bottom beams, and top beams.