An MEP permit set has two audiences: the plan reviewer who checks it against the adopted codes, and the contractor who builds from it. A well-organized set serves both. Here is what a typical mechanical, electrical and plumbing submittal contains, and why each part matters.
1. General sheets
Each discipline usually starts with a general sheet containing the symbol legend, abbreviations, general notes and code information — the adopted code editions, occupancy, and any design criteria the reviewer needs to evaluate the drawings.
2. Plans
Floor plans show equipment, ductwork, piping, fixtures, devices and circuits in relation to the architecture. Roof plans show rooftop equipment, exhaust terminations and roof drains. Clear tagging lets each item be traced to its schedule.
3. Diagrams
- Plumbing riser diagrams show how water, waste and vent piping connect vertically through the building.
- Electrical one-line diagrams show the service, distribution equipment and feeders.
4. Schedules
Schedules turn the drawings into procurement information. Typical schedules include:
| Discipline | Typical schedules |
| Mechanical | Equipment, fans, diffusers and grilles |
| Plumbing | Fixtures, water heaters, pumps |
| Electrical | Panels, lighting fixtures, equipment connections |
5. Details and notes
Details show how equipment is mounted, supported and connected. Sheet notes clarify intent where the plan graphics alone could be misread.
Tips for a smoother review
- Keep tags, schedules and plans consistent across every sheet.
- State the code editions and design criteria clearly on the general sheets.
- Coordinate equipment locations with the architectural and structural drawings before submittal.
Every jurisdiction has its own submittal requirements, so it is always worth confirming the checklist for your project's location before the set is issued.
