Shanghai Prefabricated Housing Design Plan

The design plan for prefabricated housing in Shanghai needs to be comprehensively planned in combination with the implementation scope, project cases, and construction forms. The core points are as follows:

I. Implementation Scope and Requirements
Shanghai has clear regulations on the implementation scope of prefabricated housing (prefabricated buildings):

1. Residential Buildings: In principle, newly built residential buildings are required to implement prefabricated construction, but residential buildings with a total of 3 floors or less are exempt. Except in specific cases, the prefabrication rate of individual buildings should be ≥40% or the assembly rate should be ≥60%. For residential buildings with a height exceeding 100 meters, the prefabrication rate should be ≥15% or the assembly rate should be ≥35%. For buildings with a height ≤18 meters and ≤6 floors, there are specific standards for the prefabrication rate (not fully listed in the document, but generally need to comply with regional energy-saving or seismic requirements).
2. Public Buildings, Industrial Buildings, and Others: Newly built projects with a total above-ground floor area exceeding 8,000 square meters are required to implement prefabricated construction, with specific indicators referring to residential building standards or industry norms.

II. Typical Project Case References

1. Huangdu Daju (Phase I) 23A-01 Plot Project: With a total floor area exceeding 106,000 square meters, the prefabrication rate of individual buildings is ≥40% or the assembly rate is ≥60%. Components such as floor slabs, stairs, and exterior wall panels are prefabricated in the factory and then transported to the construction site for hoisting and assembly, achieving efficient construction.
2. 22A-02 Plot Project: Planning 762 resettlement housing units with a total investment of 1.163 billion yuan and a construction period of 670 days. The project also clearly specifies requirements for the prefabrication rate or assembly rate of individual buildings, reflecting the trend of large-scale application.

III. Packing-Box House Construction Plan (One Form of Prefabricated Housing)

1. Construction Process:
   • Preliminary Design: Determine the size according to the usage scenario and confirm the building height limit and temporary building approval requirements.
   • Factory Prefabrication: Steel frames, color steel plates, water and electricity pipelines, etc., are produced in the factory to ensure quality control.
   • On-site Assembly: Hoisted into place by cranes and quickly assembled with bolts, shortening the construction period and reducing on-site pollution.
2. Material Selection:
   • Frame: Using Q235B galvanized steel with a wind resistance rating of Level 12, suitable for Shanghai's frequent typhoon climate.
   • Enclosure: Color steel plates are available in single-layer/double-layer options, with rock wool filled in the middle of double-layer plates for summer heat insulation and winter heat preservation.
   • Details: Windows and doors use broken bridge aluminum materials, and water and electricity pipelines are protected by PVC pipes to enhance durability and safety.
3. Compliance Approval:
   • It is necessary to apply for a "Temporary Building Use Permit" from the housing and construction department. Single boxes with an area exceeding 50 square meters or when used in clusters require fire protection acceptance.
   • During installation, avoid green belts and connect wastewater discharge to the municipal pipeline network to comply with environmental protection requirements.

The design of prefabricated housing in Shanghai must strictly comply with policy standards, select prefabricated buildings or packing-box houses according to project needs, and achieve efficient, environmentally friendly, and compliant construction goals through factory production and modular assembly.