Final answer:
The maximum length of a 4-inch floor drain at a slope of 1/8 inch per foot depends on plumbing standards and local building codes, which are not provided. These standards ensure efficient drainage and prevent plumbing issues such as siphoning.
Step-by-step explanation:
The question relates to the maximum length of a 4-inch floor drain that can be effectively used with a slope of 1/8 inch per foot for drainage. The slope is a vital factor as it ensures that wastewater flows away at a proper rate without causing clogs or backflow. The flow rate increases with a larger pipe diameter and better devices installed within the drain itself, which can significantly augment the drainage capacity.
However, without specific plumbing codes or standards that dictate the maximum run length of a slope of 1/8 inch per foot, it's not possible to give a definitive number. Plumbing standards typically set these maximum lengths to ensure efficient drainage while preventing siphoning or venting problems that can occur in excessively long horizontal drain runs. In practice, these lengths will vary based on local building codes and the performance characteristics of the drainage system components, as indicated by figures such as Table 7.15 Comparing Pipes: Economies of Scale in the Chemical Industry.