Custom Solution for Prefabricated Concrete Houses

The custom solution for prefabricated concrete houses should cover core aspects such as project background, design and construction, quality and progress control, and cost optimization. Details are as follows:

I. Project Planning and Goal Setting
Clarify project requirements, including purpose (office buildings, dormitories, residences, etc.), scale, and budget. Set quality goals (e.g., foundation concrete strength ≥ C30, vertical deviation of components ≤ 3mm/m), safety goals (zero fatalities and serious injuries, minor injury rate ≤ 3‰), progress goals (total project duration of 85-120 days, adopting a four-level progress control system), and cost goals (unit construction cost ≤ 1,800 yuan/㎡, material wastage rate ≤ 3%).

II. Design and Technology Selection for Prefabricated Houses

1. Structural System: Adopt a full-frame shear wall structure, with C35 concrete and Φ8-φ14 threaded steel bars poured in one go using molds, forming an integrated load-bearing system of 'L-shaped columns + rectangular beams + floor slabs' with a compressive strength of 30MPa, 1.5 times that of traditional brick-concrete structures.
2. Modular Design: Each module integrates water and electricity pipelines, EPS insulation layers (thickness 50-100mm), completes waterproof testing before leaving the factory, and can be connected to water and electricity within 3 days after on-site hoisting.
3. Connection Technology: Modules are connected using pre-stressed bolts + welded steel plates, with a single-point tensile strength of 20 tons, wind resistance rating of Level 12, and earthquake resistance intensity of 7-9 degrees (adjusted according to floor level).

III. Construction Process and Quality Control

1. Foundation Construction: Level and compact the foundation, create formwork, and pour concrete with a strength requirement of ≥ C30, estimated to take 15 days.
2. Component Transportation and Storage: Use specialized tools for transportation, stack components in order on-site to avoid damage, estimated to take 5 days.
3. Assembly Construction: Hoist components in the order of walls, roofs, and floor slabs, using bolts or welding for connections, with an installation cycle of ≤ 7 days per floor, estimated to take 20 days.
4. Decoration and Acceptance: Conduct indoor and outdoor decoration simultaneously, estimated to take 30 days; final acceptance takes 5 days, with quality monitored throughout using rebound hammers, laser alignment instruments, and other equipment.

IV. Cost Optimization Measures

1. Material Control: Centralized processing of steel bars reduces wastage by 15%, factory production of concrete reduces waste by 20%, and formwork turnover increases to over 30 times.
2. Labor Efficiency: Modular construction of water and electricity installations reduces labor costs by 10%, keeping unit construction costs within 1,800 yuan/㎡.

V. Applicable Scenarios and Advantages
Suitable for rural self-built houses, temporary office and accommodation, storage warehouses, etc. Its advantages include: Structural Safety (far less damage than brick-concrete structures in earthquakes), Fire and Water Resistance (fire-resistant for 3 hours, leakage rate of 0.3%), and Efficient Construction (100㎡ main structure completed in 3 days, cost savings of 26.7%).