What is the minimum required diameter for a building drain serving a single-family dwelling?
Our free Journey Level Plumber practice questions act as a diagnostic tool to give you a clear snapshot of your Journey Level Plumber readiness. Discover which topics are your strengths and, more importantly, which critical topics require your immediate attention.
| Name | Journey Level Plumber |
| Code | Journey Level Plumber |
| Vendor | Skilled Trades |
| Certification | NITC |