waffle slab

  The performance of waffle slab structure is known for human being since thousands years ago. Perhaps, inspire from the concept of waffle slabs can be attributed to Acropolis Monument in Greece. As of early 19th century and with the progress of science and technology in the New Era, construction of engineering structures and also construction of buildings started with various applications in the United States and other countries using Classic Waffle Slab System.   The technical advantages of the Waffle Slabs, along with specific esthetics of these slabs, caused these slabs to be highly welcomed by architects and used in various structures. A waffle slab or two-way joist slab is a concrete slab made of reinforced concrete with concrete ribs running in two directions on its underside.   The name waffle comes from the grid pattern created by the reinforcing ribs. Modern Waffle Slabs were used in 1940 in countries like the United States and Canada with the aim of o...

 reused many times, and even after reaching the end of its service life, it retains value as recyclable scrap material. This not only contributes to environmental sustainability but also allows part of the initial formwork cost to be recovered through scrap sales. In contrast, comparable systems using plywood are usually limited to only 2 or 3 reuses, and once deteriorated, they hold no resale value.”

   intermediate columns. Even in non-seismic areas, hidden beams can be applied, which not only reduces material consumption but also provides a uniform ceiling surface. In addition, this system facilitates the installation of mechanical and electrical services as well as air-conditioning ducts, leading to easier execution and cost savings.”

  . Waffle slabs provide stiffer and lighter slabs than an flat slab. . The speed of waffle slab construction is faster compared to   conventional slab. . Relatively lightweight hence economical. . It uses 30% less concrete and 20% less steel than a flat slab. . They provide low floor deflections. . It has good finishes and resistance. . Fairly slim floor depth and fire-resistant. . Excellent vibration control.  

  The various advantages of waffle slab are as follows: •         Design and implementation of larger spans and removing extra columns •         The possibility of irregular placement of columns and installation of large openings   •         Removing the middle beams and having a flat roof •         Savings on weight and materials   (concrete & rebar) and construction cost •         Helping architecture and interior design and increasing space and parking •         Reducing the thickness of the roof and increasing the useful height of the floors •         Improved seismic performance of the structure due to weight reduction •         Good vibration control capacity •  ...