International Plumbing Code Practice Test 2025 - Complete Exam Prep

In the International Plumbing Code, the minimum number of plumbing fixtures required is determined based on the total occupant load of a building. For an occupant load of 400, the code specifies certain thresholds that dictate how many restroom fixtures are necessary to accommodate that number of people.

Typically, the code outlines specific fixture ratios, often varying based on the type of building, including the separate requirements for male and female occupants. For a total occupant load of 400, the correct answer of four fixtures reflects the established minimums that promote adequate sanitation and accessibility within a building, ensuring that all individuals have sufficient access to restroom facilities without excessive waiting times.

This requirement is essential for maintaining health and safety standards, confirming that facilities can adequately service the expected number of users in a timely manner. Therefore, the answer of four fixtures is aligned with the guidelines laid out in the plumbing code for a population of this size.