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AI drafting for enlarged restroom plans

AI Enlarged Restroom Plan Drafting

Enlarged restroom plans are where accessibility comments come from: a water closet 19 inches off the side wall, a grab bar that stops short of 54 inches from the rear wall, a door that swings into the clear floor space at the lavatory. Nomic drafts the enlarged plans and interior elevations in CAD at 1/4" or 1/2" scale with every fixture, clearance, and mounting height dimensioned, then checks them against the 2010 ADA Standards or ICC A117.1 and the required fixture count.

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Last reviewed: November 2026

You send

  • Floor plans and the architectural background as DWG
  • Plumbing fixture selections and cutsheets, wall-hung or floor-mounted
  • Toilet partition and accessory selections
  • The accessibility standard and plumbing code the project is designed to

Nomic hands back

  • Enlarged restroom plans as DWG files, dimensioned to finished wall
  • Interior elevations of each toilet room wall with mounting heights
  • A fixture count table in Excel and on the sheet
  • Plotted PDFs with changes clouded and open questions listed
1234567ABCOFFICE401OFFICE402OFFICE403OFFICE404OFFICE405OFFICE406OFFICE407OFFICE408OFFICE409CONFERENCE410OPEN OFFICE411CONFERENCE412CONFERENCE413CONFERENCE414STAIRS24" SS-1CO4" SAN @ 1/8"/FT2" V27'-3"27'-0"27'-3"27'-3"27'-0"27'-3"94'-8"1APLUMBING PLANSCALE: 1/8" = 1'-0"N1234CONSULTING ENGINEERSREVISIONS1ISSUED FOR REVIEWPROJECTHARBOR POINT OFFICESSCALE1/8" = 1'-0"DATE08/04/2026KEY PLANSHEET TITLEPLUMBING PLANSHEET NUMBERP-101

On the sheet

Plumbing Plan, annotated

A plumbing plan with fixtures, waste and vent piping, and domestic water routed to each group.

  1. 1Water closet and lavatory on the wet wall
  2. 2Sanitary main sloped to the stack
  3. 3Vent line tied to each fixture
  4. 4Stack and cleanout

The problem

Small rooms, a lot of dimensions

A single multi-stall restroom can need 40 dimensions to be buildable and reviewable: water closet centerlines from the side wall, the 60 inch clearance beside the accessible toilet, compartment widths and depths, grab bar lengths and offsets, lavatory rim and knee clearance heights, mirror, dispenser, and hook heights. Those numbers come from the same few code sections on every project, yet they get redrawn room by room and floor by floor.

The dimensions also have to survive changes from other trades. The plumbing engineer moves a wet wall 4 inches, the toilet partition manufacturer has a different pilaster width, or the owner picks a wall-hung closet instead of a floor-mounted one and the compartment depth requirement changes. Each change ripples into the plan, the interior elevations, and the fixture count table on the same sheet.

01 / Layout

Fixtures and clearances drawn and dimensioned

Nomic lays out each toilet room from the floor plan and the plumbing fixture selections, draws the clear floor spaces and the turning space, and dimensions every fixture to the finished wall. Interior elevations of each wall show grab bars, accessories, and mounting heights, keyed from the enlarged plan.

  • Water closets, urinals, lavatories, and compartments placed and dimensioned
  • Clear floor spaces and the 60 inch turning space drawn in a light hatch
  • Interior elevations with grab bars and accessories at mounting heights
02 / Fixture count

Required fixtures counted from the occupant load

Nomic splits the occupant load by sex as the plumbing code directs, applies the ratios for the occupancy, and compares required fixtures with what the plan provides. The count table goes on the enlarged plan sheet and into Excel for the plumbing engineer.

  • Water closets, lavatories, drinking fountains, and service sinks counted
  • Urinal substitution held to the limit for the occupancy
  • Provided fixtures compared with the plan, room by room
03 / Check

Clearances checked fixture by fixture

Nomic checks each fixture, compartment, accessory, and door against the accessibility standard you name and flags the dimension that fails, with the section it fails. Everything it drew is clouded so the architect reviews the changes and the open questions first.

  • Water closet, lavatory, and urinal clearances and heights checked
  • Grab bar lengths, offsets, and heights checked on plan and elevation
  • Door swings checked against fixture clear floor spaces

Checked against

The code and documents behind every sheet

Name the editions the project is designed to and Nomic checks its own drawing against them before handing it back. Your engineer or architect of record makes the final call and stamps the set.

  • 2010 ADA Standards for Accessible Design, Chapter 6
  • ICC A117.1
  • IBC Chapter 11 accessibility
  • IPC Table 403.1 and IBC Table 2902.1 minimum plumbing facilities
  • Plumbing fixture and toilet partition cutsheets

How it works

From a sentence to a stamped set

  1. Step 1

    Ask for the drawing

    Say what the sheet needs to show and attach the backgrounds, markups, cutsheets, or photos. A sentence is enough to start.

  2. Step 2

    Nomic drafts it in CAD

    Nomic works in CAD on its own computer, on your layers and blocks, following how your firm drew the same thing before. It saves real DWG files to the project.

  3. Step 3

    Nomic checks its own work

    The drawing is checked against the code editions you name and the source documents. Everything Nomic drew is clouded, and open questions are listed.

  4. Step 4

    Your team reviews and stamps

    Your engineers and architects review the clouded changes, make the final call, and issue the set under their own stamp.

FAQ

Frequently asked questions

Yes. Nomic works in CAD on its own computer and saves enlarged restroom plans and interior elevations as DWG files, with fixtures, clearances, grab bars, and mounting heights dimensioned. It checks each one against the 2010 ADA Standards or ICC A117.1 edition you name, and the architect reviews and stamps the sheet.

Water closet centerline and clearance, compartment size, grab bar lengths and positions, lavatory height and knee clearance, mirror and dispenser heights, the turning space, and door swings into fixture clear floor spaces. Each finding cites the section it comes from.

Yes. Nomic takes the occupant load, splits it by sex as the plumbing code directs, and applies the ratios in IPC Table 403.1 or IBC Table 2902.1 for the occupancy. The plumbing engineer confirms the count, especially where a local amendment or an alternate ratio applies.

Name the edition, and Nomic checks against it. Some A117.1 editions differ from the 2010 ADA Standards on clearances and turning space, so projects that must meet both are checked against each, with the stricter dimension flagged.

No. Nomic drafts the rooms and checks every dimension it can measure, which leaves less manual work for the reviewer. The architect of record makes the final call on accessibility compliance and stamps the drawings.

Keep reading

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What is accessibility in building design?

The standards that govern accessible routes, rooms, and fixtures.

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Drawings cross-referenced against the code edition you name.

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AI Enlarged Restroom Plans: Toilet Room DWGs to ADA | Nomic