Less Waste, More Profit with DORCE’s Prefabricated Steel Structures "Unlike traditional construction methods, DORCE produces the modules offsite and assemble them at construction site. In this way, much less waste is produced." One of the biggest issues faced by traditional construction companies is waste. In other words, around 30 percent of the total weight of the construction materials is wasted on site. What differentiates DORCE's prefabricated steel modular structures different from traditional construction is that the building modules are produced off-site and then assembled on-site. This method greatly reduces the amount of waste generated. According to a research study more..