Video – How Permanent Modular Buildings are Installed

Large modular buildings are installed on permanent foundations through a systematic and precise process, which is crucial for ensuring the stability, occupant safety and longevity of the structure. Here’s an overview of how it’s typically done, a process especially relevant for architects and facility managers to understand before launching a permanent modular building project.

1. Preparation of the Foundation: Before the modular units arrive, a permanent foundation is prepared. This foundation can vary in type, from a full basement to concrete piers or a slab-on-grade, depending on the building requirements and local codes. The foundation must be level and sturdy to support the weight of the modular units. You can learn about site selection for modular buildings here.
   
   
2. Delivery of Modular Units: The prefabricated sections of the modular building are transported to the site. These sections are usually constructed off-site in a controlled factory setting, ensuring quality and precision.
   
   
3. Positioning and Crane Lifting: Each modular unit is lifted by a crane, operated by skilled professionals. The crane carefully positions the units over the foundation. This step requires precise coordination and skilled operators, as the units must align correctly with the foundation and with each other.
   
   
4. Securing Units to the Foundation: Once in place, the modular units are securely fastened to the foundation. This is typically done using bolts or anchors, ensuring that the building is firmly attached to the foundation. This step is critical for the structural integrity of the building, especially in areas prone to high winds or seismic activity.
   
   
5. Joining the Modules: After securing the units to the foundation, the next step is to interconnect them. This involves aligning the floors, walls, and roofs of the individual modules, ensuring that they fit together seamlessly. The joints between the modules are then sealed and reinforced to create a continuous structure.
   
   
6. Utility Connections and Finishing Work: Once the modules are joined, utilities like electricity, plumbing, and HVAC systems are connected. This may involve running connections between the modules and hooking them up to external sources. Following this, interior finishing work is completed, including installing drywall, painting, and adding fixtures. Exterior finishing may also be done, such as adding siding, roofing, and windows.
   
   
7. Inspection and Compliance: Throughout the installation process, inspections are typically conducted to ensure compliance with building codes and regulations. This ensures the building is safe, habitable, and ready for occupancy.

By following these steps, large modular buildings are installed on permanent foundations, providing a quick, efficient, and often cost-effective alternative to traditional construction methods.