Concrete bowls: Requirements for materials

Many during the construction of pools choose concrete bowls, as they are the most durable and practical. How such designs are made? What are the requirements for the materials for them are presented? During the construction of pools, you can use many different technologies. So, for example, some prefer to build thorough reinforced concrete pools. They are considered the most durable and reliable. However, it is impossible to say about the simplicity of their construction, since experts have to take into account a lot of external factors that are one way or another affected by the process of manufacturing the bowl.