Today's prefab homes are reliable, affordable and eco-friendly. They are a homeowners little steel castle, adding to the community as they are built in numbers, while at the same time delivering warmth and coziness to the owners. Prefab is little castle of steel or cement, dream come true.
Prefab has been utilized since ancient times. It is claimed that the world's oldest known engineered roadway, the Sweet Track constructed in England around 3800 BC, employed prefabricated timber sections brought to the site rather than assembled on-site. Good example of iron prefab construction is the Crystal Palace, erected in London in 1851.
Most widely-used form of prefab in building is the use of prefabricated concrete and prefabricated steel sections in structures. Constructing the formwork required to mould concrete components on site and delivering wet concrete to the site can be difficult. Idea behind is the method reduces time, avoids need to bring many skilled workers to the construction site. And other restricting conditions such as a lack of power, lack of water, exposure to harsh weather or a hazardous environment are avoided
Prefabricating steel sections reduces on-site cutting and welding costs as well as the associated hazards.
Pouring concrete sections in a factory brings the advantages of being able to re-use moulds and the concrete can be mixed on the spot without having to be transported and pumped wet on a construction site. Same technique method are used in the construction of apartments and housing developments .
The quality of prefab housing units have improved to the point that they may not be distinguishable from traditionally-built units to those that live in them.