Precast concrete steps are made of concrete material poured into a hollow form. It is not solid concrete, but instead it is made in a mold that leaves the center of the material unfilled. This method produces steps lighter in weight than solid concrete materials but with high durability and strength.
One of the advantages of precast concrete stairs is that they do not settle as much as solid concrete poured on-site. Precast steps also can be adjusted if settling does occur, according to the SheaConcrete website. This ability provides a better appearance and longer-lasting structure for entryways. The concrete is cast under controlled conditions of temperature and moisture that reduce cracking problems that often occur under the variable conditions of field-cast concrete. Precast concrete also can incorporate non-skid texturing into the surface for additional safety. No gaps or joints are in the precast materials, resulting in fewer opportunities for leaks to occur.
Precast concrete steps come in a variety of sizes and styles. They are available in single or multiple risers. Generally, precast concrete steps are available in 7-inch risers. They may be any width, but 4- to 10-foot-wide steps are common. Precast steps also can be stacked for greater height. The steps can be installed side-by-side for even wider entryways. Full-size staircases also can be cast, for instance, for use as basement stairways.
Generally, installation of the precast concrete steps is done by the company that makes and sells the product. Even small concrete step sections are heavy and require special equipment to move and set the steps into place. The homeowner may be required to prepare the installation site by removing all grass, rocks and debris from the soil as well as excavating down to the frost level, generally to about 4 inches. Tamping the soil down firmly and evenly to receive the steps and using a level to ensure the ground creates an even pad for the precast concrete steps also are part of the prep process,