Martens' standard concrete pit is readily available, guaranteed waterproof, and always in stock in various dimensions. One significant advantage of Martens concrete lies in its sophisticated automated production process, utilizing steel molds and self-compacting concrete. As a result, Martens' concrete pits in sizes of 80x80 and 100x100 can be manufactured with a wall thickness of just 10 cm. This represents a reduction of 25% to 50% with no loss in quality.