Concrete pools are some of the highest quality swimming pools built. When constructed properly, these pools offer years of use before requiring much maintenance or repair. The most popular type of concrete pool construction today is done with either shotcrete or gunite, which are mixtures of concrete and sand that are sprayed onto a metal frame. Most of bigger and commercialized swimming pool are designed and constructed by this method. Filtration plant and draining system required a heavy plumbing work.