Prefabricated Panel House Construction Guide

The construction of a prefabricated panel house should follow the process of foundation treatment, main structure assembly, component fixation and sealing, and backfilling and finishing. The specific steps are as follows:

Foundation Treatment

Level the foundation and pour a cushion layer to ensure that the excavation depth and ground height meet the design requirements. In a South Korean case, no steel bars were used, but white plastic sheeting was laid to prevent moisture loss from the concrete, enhancing its strength and durability. When installing the foundation plates, drill holes with a drill and secure them with expansion screws. Fix 5-ton prefabricated foundation piles to the cushion layer through the foundation plates to ensure a stable foundation.

Main Structure Assembly

Beam Installation: After the foundation piles are fixed, install the beams horizontally. Adjust their positions using level measurements and secure them with nuts. Fill the gaps with expanding foam and seal them with cement to prevent corrosion.
Prefabricated Panel Hoisting:

• For composite panel hoisting, use a hoisting steel beam to ensure that the lifting points bear force simultaneously, avoiding cracks or distortions due to uneven force distribution.
• Traditional prefabricated panel production involves nailing wooden planks to create a hollow mold, laying steel bars, and pouring cement. After drying, the wooden planks are knocked off to form the floor slab.
• Modern modular prefabricated houses complete steel structure welding, wall laying, and utility pre-installation in the factory. Modules are then directly hoisted and connected on-site, offering higher efficiency.

Component Fixation and Sealing

Fill the gaps between the beams and foundation piles with expanding foam and seal the nut fixings with cement to prevent moisture penetration and structural loosening. Modular houses are assembled by connecting interfaces and locking them, with utility connections completed afterward, eliminating the need for secondary on-site construction.

Backfilling and Finishing

After the foundation frame is completed, backfill with soil and compact it to enhance stability. Modular houses, having undergone interior decoration and utility pre-installation in the factory, can be used directly upon delivery without on-site finishing work.

Precautions:

• Traditional prefabricated panels require on-site pouring of floor slabs, while modern modular houses have integrated interior decoration and utility systems, making construction more convenient.
• In the South Korean case, no steel bars were used, but the structure was enhanced through plastic sheeting and sealing techniques. Materials and processes should be adjusted according to design requirements.
• The hoisting process must strictly adhere to safety regulations to avoid damage to components or personal injury.