A warehouse can be defined functionally as a building in which to store bulk produce or goods for commercial purposes. It is a large building where raw materials or manufactured goods may be stored prior to their distribution for sale. The built form of warehouse structures throughout time depends on many contexts: materials, technologies, sites, and cultures. The need for warehouses developed in societies in which trade reached a critical mass requiring storage at some point in the exchange process. Warehouses can also be called as store room, storehouse, depot, depositary, repository, stockroom, godown etc Some of the warehouse types as follows,