Prefabricated building or volumetric modular construction refers to a method of building a structure off-site, rather than a description of the finished product. Prefab buildings are typically built 60 to 90 percent off-site in a three-dimensional form, designed to be constructed at one location, and then used by occupants at another.
Modern, custom, multi-story, factory-built buildings with concrete and steel floors, brick exteriors, sheetrock interiors, windows, lighting, computer hook-ups, electrical service, plumbing, heating, air conditioning and restrooms can include everything you need and can be constructed in half the time of a site-built building.
The Four Stages of Prefab Building
- Design approval by the end user and any regulating authorities
- Assembly of module components in a controlled environment
- Transportation of modules to a final destination
- Erection of modules to form a finished building
Concurrent activities compress overall project schedule:
While modules are being constructed in a factory, site work is occurring at the same time . This allows for earlier building occupancy and contributes to a much shorter overall construction period. This process often allows modular construction times half of that of conventional, stick-built construction with the same life expectancy as traditionally built buildings.