A common alternative term for a grid lift is a “waffle slab.” This structural component, characterized by a two-way joist system, offers a visually distinct pattern on its underside. As an example, a large commercial building might utilize this structural approach to minimize the weight of the floor while maintaining its load-bearing capacity.
The selection of this construction method offers benefits such as a reduced use of concrete compared to a solid slab of equivalent thickness, resulting in cost savings and a lighter overall structure. Its history extends back to the mid-20th century, finding application in buildings requiring large spans and open spaces. Its inherent stiffness and efficiency in load distribution are key advantages.