Massachusetts Plumbers Journeyman Practice Exam 2026 – All-in-One Guide to Master Your Licensing Test!

The correct answer indicates that the minimum requirements for a shower compartment or stall are 900 square inches of floor area combined with a minimum dimension of 30 inches. This specification ensures that the shower stall is both spacious enough to accommodate a user comfortably and meets safety standards for ease of entry and movement within the space.

Having a minimum floor area of 900 square inches ensures that the shower compartment provides enough room for occupants to maneuver without feeling cramped, reducing the likelihood of slips or falls. The 30-inch minimum dimension is also critical as it allows for a sufficient width to facilitate easy access.

These standards are consistent with plumbing code regulations designed to promote safety and usability in residential and commercial plumbing installations. While other dimensions may seem feasible, they may not uphold the balance of user comfort, accessibility, and necessary building codes.