Precautions for Prefabricated House Design
When designing prefabricated houses, it is essential to focus on aspects such as the use of prefabricated panels, roof treatment, policy compliance, and construction management. Here are the specific precautions:
Placement and Quality of Prefabricated Panels
Placement Direction: The placement direction should be determined based on the span of the house, typically opting for a transverse arrangement in the direction with the smaller span. Since floor slabs primarily bear pressure, transverse placement can disperse the pressure and provide greater stability in the event of foundation settlement. Quality Control: Choose products from reputable manufacturers. The steel bars must be prestressed, with a concrete strength of no less than C30, and the specifications and quantity of steel bars must comply with national standards. The appearance should be free of cracks, honeycombs, holes, and other defects to ensure structural safety.
Installation Specifications for Prefabricated Panels
Installation Position: When placed on concrete components (such as ring beams), the length should be no less than 80mm; when placed on walls, the length should be no less than 100mm. Gap Treatment: A gap of 20-40mm should be left between two panels. After installation, the lower ends of both sides should be mortared, and the holes at both ends of the prefabricated panels in the wall should be filled with concrete. Usage Restrictions: It is prohibited to arbitrarily cut holes or slots, and they should not be used in damp areas such as kitchens and bathrooms. Gap Repair: After cleaning debris from the panel gaps, pour cement mortar and vibrate it densely. For larger gaps, pour concrete on-site and cure it; the use of bricks for filling is strictly prohibited.
Roof Leakage Prevention Design
If using a prefabricated panel roof, it is recommended to first arrange a steel bar mesh and then pour 6-8mm thick crushed stone concrete to enhance impermeability; prioritizing a cast-in-place roof can completely avoid the risk of leakage.
Other Key Design Considerations
Partition Wall Treatment: When slotting is required for pipe installation in 12-inch walls, strictly control the depth and width of the slots to avoid damaging the wall structure. Policy Compliance: Before constructing a house, it is necessary to understand local policies, ensure that the site selection complies with planning, and obtain relevant permits such as a rural construction planning permit. Construction Management: Choose a qualified construction team, sign a formal contract, regularly inspect the construction progress and quality, and focus on the construction of the foundation and main structure. Material Inspection: All construction materials must undergo strict inspection to ensure quality compliance. Completion Inspection: After the house is completed, relevant departments must be organized to conduct an inspection, and it can only be put into use after passing the inspection.
