 Each module was identical, fully prefabricated, self-supporting, and fast and easy to erect.All of the parts could be mass-produced in large numbers, and many parts served multiple functions, further reducing both the number of parts needed and their overall cost.Because of its comparatively low weight, the Crystal Palace required absolutely no heavy masonry for supporting walls or foundations, and the relatively light concrete footings on which it stood could be left in the ground once the building was removed (they remain in place today just beneath the surface of the site).