A precast concrete product is a factory-made piece manufactured with concrete and which, later, together with other pieces, will become part of a larger structure. Precast concrete elements are prepared, cast and hardened at specially equipped plants with a permanent location.

Once a precast concrete product is produced and all the undertaken quality controls satisfactory, the unit is stored until delivery. It is then transported for use at another site.

The main advantages of such a process are:

• the intrinsic quality of an industrial product, manufactured in a controlled environment and with accurate methods;
• advanced quality control, which goes far beyond the checking of the fresh concrete, can be introduced. Dimensional accuracy, properties of the hardened concrete and position of reinforcement can all be checked before inclusion of an element in the final work;
• factory-made products are independent of weather conditions and can be proceeded separately from construction work on site.