Sleeper wall explained

A sleeper wall may refer to the following types of walls:

• sleeper wall is a short wall used to support floor joists, beam and block or hollowcore slabs at ground floor. It is constructed in this fashion when a suspended floor(Also called suspended slab) is required due to bearing conditions or ground water presence. Essentially it is a wall in the way that it is constructed but a sleeper in the way that it functions.Stretcher bond or header-stretcher bond can be used in these walls.
• sleeper wall can also refer to a retaining wall made from railroad ties. It is used to prevent erosion. It can be made from bricks or concrete blocks. The wall is often used in landscaping.