Buildings that can provide comfort to occupants and very low energy consumption are known as Nearly Zero-Energy Buildings (NZEB), which are defined as buildings with very high energy performance.

Lightweight Steel Frame (LSF) buildings have now been accepted in the global construction industry, and are proving to be one of the construction systems suitable for building NZEB.

There is an increasing demand on the market in general for prefabricated and modular construction of residential, public, and commercial buildings.

Modules are produced in standard sizes and shapes, and can then be assembled on site into buildings with many repetitive units or can be assembled into more advanced architecture. The module must also be flexible to operate as a single and self-sufficient building or, exploitable as a part of cluster of several modules to form larger building.

Since LSF is not conventional, but is, rather, quite a scarce construction system to date in Indonesia SteelBio is bringing in the country his know how and long tradition (20 years) of dry construction with LSF in Europe to provide high-performance housing units, which implies providing occupants with a high level of indoor thermal comfort, a healthy environment and very low energy consumption, without increasing the construction costs.

This is due to the characteristics of the LSF structures, such as:

• rapid on-site construction
• possibility of prefabrication
• architectural flexibility
• low weight with reasonably high load bearing capacity (possible to create spans of 9 m and room height of 4 m)
• considerable possibility of recycling and reuse
• reduced costs of labour, transportation, and installation
• cost efficiency