What is a 'Waffle Slab' primarily used for?

A 'Waffle Slab' is primarily recognized as a two-way slab system that utilizes a grid of ribs or beams, giving it a waffle-like appearance. This design allows for effective load distribution in both the longitudinal and transverse directions, which is advantageous in larger spaces and helps minimize deflection and material use.

The absence of beams in a waffle slab means that the load is transferred directly to the columns through the slab itself, making it particularly useful in situations where headroom is a concern or where an unobstructed space is desired. This design allows for efficient use of concrete and reinforcement while maintaining structural integrity.

Waffle slabs can be particularly beneficial in large-span applications, such as auditoriums or parking garages, where load distribution needs to be uniform across a broad area. This characteristic differentiates waffle slabs from more traditional slab systems, which might employ one-way load paths or additional reinforcement primarily in one direction.