هرم زوسر
Setbacks were used by ancient builders to increase the height of masonry structures by distributing gravity loads produced by building materials such as clay, stone, or brick. This was achieved by regularly reducing the footprint of each level located successively farther from the ground. Setbacks also allowed the natural erosion to occur without compromising the structural integrity of the building. The most prominent example of a setback technique is the step pyramids of Mesopotamia and Ancient Egypt, such as the Teppe Sialk ziggurat or the Pyramid of Djoser.