In industrial on-site manufacture, readymade materials are purchased from the marketplace which are after that fabricated at the building site. However, on-site construction is not simply restricted to business sectors. They are used in industrial building and construction as well. Pre- Engineered Structures on the other hand are constructed off-site in factories, with only the assembling and also installation entrusted to be done on the construction site. So how do these two methods of construction differ? Let's take a look at couple of factors listed below. Fig 1.1 Pre engineered buildings vs onsite fabrication 1. PEBs are made for safety and security with optimum weight The layout of pre engineered buildings are done based upon the client demand and as per the weather problems like wind speed as well as probability of earthquake. So, they are created lasting through rough weather, with high structural toughness. In contrast, on-site construction has actually the style done as