Prefabricated House Hoisting Construction Plan

The prefabricated house hoisting construction plan covers four core aspects: construction preparation, process flow, safety assurance, and technical specifications, as detailed below:

I. Construction Preparation

1. Organizational Structure
   The project manager oversees overall management, the technical lead prepares the plan and conducts briefings, and the construction team executes operations according to their assigned tasks, ensuring clear responsibilities for each individual.
2. Materials and Equipment
   • Components: Includes prefabricated floor slabs, walls, stairs, etc., with quality inspections required in advance.
   • Hoisting Equipment: Select tower cranes (e.g., TC6015 with a maximum lifting capacity of 6 tons) or truck-mounted cranes based on component weight, ensuring full coverage of the work area.
   • Auxiliary Tools: Equip with safety harnesses, diagonal braces, straight/L-shaped connectors, measuring instruments (spirit levels, plumb bobs), etc., to ensure construction accuracy and safety.
3. Site Layout
   • Designate separate areas for construction, material storage, and living quarters to avoid cross-interference.
   • Lay 4-meter-wide temporary roads and install drainage ditches and collection wells to prevent water accumulation from affecting construction.
   • Establish survey control points and set permanent longitude/latitude coordinate piles and leveling piles to ensure accurate component positioning.

II. Construction Process

1. Component Transportation
   Select transportation vehicles based on component size and secure them firmly to prevent displacement; plan routes to avoid restricted sections and reduce transportation risks.
2. Hoisting Operations
   • Inspection: Verify that lifting gear and equipment are intact and that components have no cracks or deformations.
   • Lifting: Use modular lifting beams, slowly raise to a height of 500mm to check connections, and control descent with tag lines when lifting to 600mm above the work level.
   • Securing: Immediately use diagonal braces or fixed corner brackets for temporary fixation upon arrival to prevent overturning.
3. Connection and Alignment
   • Connection methods include welding, bolt connections, or semi-grouted sleeve connections; clean connection areas and verify fastness after installation.
   • Adjust verticality and elevation using spirit levels and plumb bobs, with deviations meeting specifications (e.g., verticality ≤ H/1000).
4. Finalization Procedures
   Pour concrete and apply sealant to prevent leakage; install construction elevators and scaffolding to ensure safety for subsequent operations.

III. Safety Assurance

1. Equipment Management
   Verify the anti-overturning and compressive capacity of temporary supports to avoid instability; conduct regular maintenance on hoisting equipment to ensure stable operation.
2. On-Site Monitoring
   Assign dedicated safety officers to monitor cross-operations, ensuring equipment stability and secure lifting gear during hoisting to prevent component detachment.
3. Risk Prevention and Control
   Develop targeted measures for risks such as high-altitude hoisting and temporary support instability (e.g., install fall protection nets); strictly adhere to the Technical Code for Safety of High-Altitude Operation in Building Construction (JGJ 80-2016).

IV. Technical Specifications

Follow national standards such as the Technical Standard for Prefabricated Concrete Buildings (GB/T 51231-2016), adjusting the plan based on construction drawings and local regulations to ensure all stages pass inspections.