Introduction

Concrete slabs are floor systems of concrete and steel reinforcing. They are constructed on the ground. Various types of slabs are available.

Slab on ground

Diagram of a concrete floor on the ground. Two integral edge beams at either end of the slab support the concrete floor. Concrete floor supported on the ground and incorporating integral edge beams.

Stiffened raft slab

Diagram of a concrete floor on the ground. There are three integral edge beams supporting the concrete floor - two at either end and one in the middle. Concrete floor supported on the ground with a separately poured edge strip footing.

Footing slab

Diagram of a concrete floor on the ground. Two separately poured edge strip footings support the concrete floor. Concrete floor supported on the ground with a separately poured edge strip footing.

Waffle raft slab

Diagram of a concrete floor with closely spaced ribs. The void former fills the areas between the ribs. Stiffened raft with closely spaced ribs constructed on ground and with slab panels suspended between ribs.

Infill slab

Diagram of a concrete floor with two walls. The walls and concrete floor are sitting on top of the strip footing. Slab cast on the ground between walls and with no stiffening beams.