A China-based manufacturing company has constructed a 10-story steel apartment in the city of Changsha in China within a construction process of just 28 hours and 45 minutes.

This company used bolt-together modular units known as the “living building” system. The system uses components that can be fitted into a standard shipping container and then be bolted together at the construction site. The wiring and ductwork are factory-fitted.

The feat was achieved with the help of three cranes and an on-site workforce.

The company used its B-Core steel slabs for structural elements, which it says are 10-times lighter and 100-times stronger than conventional slabs. They can also withstand earthquakes and typhoons while costing less than a carbon steel building and consuming less energy.

The same modules can be used to construct buildings of up to 200 stories due to the B-Core steel slabs’ strength and lightness.

ADTO Flatpack container house is a form of the house using steel intermodal containers as a structural element. The use of containers as a building material has grown in popularity over the past several years due to their inherent strength, wide availability, and relatively low expense. Homes have also been built with containers because they are seen as more eco-friendly than traditional building materials such as brick and cement.