Illinois Plumbing Code Practice

The correct answer is that all cleanouts in vertical stacks shall be located no higher than 48 inches above the floor. This requirement is established to ensure accessibility for maintenance and cleaning purposes. Keeping cleanouts within this height range allows plumbers and maintenance personnel to easily access them without the need for additional equipment or excessive reaching. Having cleanouts positioned at a reasonable height is crucial for effective drainage system maintenance and to facilitate prompt attention to any blockages that may occur. In plumbing code standards, accessibility is key to ensuring that systems remain functional and can be serviced efficiently. Thus, setting a maximum height of 48 inches serves to promote safety and practicality in plumbing practices.