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AI drafting for contractors

AI Drafting for Contractors

Contractors draft a second set of drawings nobody sees at bid time: coordination drawings, sleeve and insert layouts, field layout sheets, and the as-builts owed at closeout. Nomic drafts those from the design set and your field markups as DWG files, and checks them against the contract documents and the code your inspector enforces. The design team stays responsible for the design.

Start for freeAll drafting work
Last reviewed: November 2026

You send

  • The issued for construction set and current bulletins
  • Trade shop drawings and equipment submittals
  • Scanned field markups, photos, and the RFI log
  • Your company drawing standards or the GC's coordination requirements

Nomic hands back

  • Coordination drawings by level with conflicts listed by grid line
  • Sleeve, penetration, and field layout drawings as DWG files
  • As-built drawings with every change clouded and sourced
  • Open questions for the design team, including sleeves near structure
8" CONC. WALL W/ #5 @ 12" O.C. E.F.2" RIGID INSULATION, FULL HEIGHT5" SLAB ON GRADE OVER VAPOR RETARDER24" x 12" CONT. FOOTING W/ (3) #5 CONT.FINISH GRADE1AFOUNDATION WALL SECTIONSCALE: 3/4" = 1'-0"1234CONSULTING ENGINEERSREVISIONS1ISSUED FOR REVIEWPROJECTHARBOR POINT OFFICESSCALE3/4" = 1'-0"DATE06/05/2026KEY PLANSHEET TITLEFOUNDATION WALLSECTIONSHEET NUMBERS-501

On the sheet

Foundation Wall Section, annotated

A wall section detail with the footing, reinforcing, insulation, and slab, each called out by a leader note.

  1. 1Footing with reinforcing bars
  2. 2Continuous rigid insulation
  3. 3Slab on grade bearing on the wall
  4. 4Leader notes calling out each material

The problem

The contractor's drafting load starts after the bid

Division 01 asks for coordination drawings before any trade installs overhead, so the sheet metal detailer redraws the duct mains, the plumbing contractor redraws the storm and sanitary, and someone overlays both with the conduit, the sprinkler mains, and the structural steel to find where a 24 inch duct and a W18 beam want the same space. Then come the sleeve drawings for every pour, because a missed sleeve in a post-tensioned deck means a scan, a core, and a sign-off from the structural engineer, if the engineer allows the core at all.

At closeout, the as-builts come due, and the information lives in red pen on plots in the job trailer, in photos on the superintendent's phone, and in RFI responses. Turning that into clean DWGs that match what was installed usually lands on a project engineer in the last month of the job, alongside the punch list and the O&M manuals.

01 / Coordination

Coordination drawings from the design set

Attach the design set, the structural drawings, and the trade shop drawings you have. Nomic draws each trade's routing on its own layers at the elevations the design and shop drawings call for, overlays the trades on the structure, and lists every place two systems want the same space by sheet and grid line.

  • Duct, pipe, conduit, and sprinkler mains on one background by trade
  • Bottom of duct and bottom of pipe elevations tagged
  • Conflicts listed by grid line for the coordination meeting
02 / Sleeves and layout

Sleeve, penetration, and layout drawings for the pour

Nomic draws sleeve and penetration drawings for each pour from the coordinated routing, dimensioned off column grid lines the field crew can shoot, and marks which penetrations pass through rated assemblies and need a listed firestop system. Sleeves near beams, columns, or post-tensioned tendons go to the structural engineer of record as questions.

  • Sleeves dimensioned to grid lines with size, elevation, and trade
  • Rated wall and floor penetrations tagged for firestop
  • Embeds and hanger inserts on the deck layout sheet
03 / As-builts

As-built drawings from the field markups

Send the scanned redlines, field photos, and the RFI log. Nomic edits the design DWGs to match what was installed, clouds and tags each change with its source, and lists marks it cannot read or that conflict with an RFI response, so the project engineer starts from a short list.

  • Hand markups and Bluebeam markups picked up into the DWGs
  • Each change tagged to its markup, photo, or RFI
  • Plotted as-built set and a transmittal for closeout

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.

  • The contract drawings and specifications, including Division 01
  • IBC Section 714 penetrations and the listed firestop systems
  • NEC 300.21 for electrical penetrations of rated assemblies
  • Approved shop drawings and RFI responses
  • Structural notes on sleeves, cores, and post-tensioned slabs

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 drafts each trade's routing from the design set and shop drawings on its own layers, overlays the trades on the structure, and lists conflicts by sheet and grid line. Your coordinator and the trades still run the coordination meeting and agree on who moves.

Yes. Nomic reads scanned hand markups, Bluebeam markups, and field photos, edits the DWGs, and clouds and tags each change with the markup, photo, or RFI it came from. Marks it cannot read and marks that conflict with an RFI response are listed for the project engineer.

The design team. Nomic drafts from the contract documents, and coordination, sleeve, and as-built drawings document how the design is built. Any change to the design, including a sleeve through a beam or a reroute that changes a pipe size, goes back to the architect or engineer of record as a question or RFI.

Nomic is not a plugin for any of them. It works in CAD on its own computer and saves DWG files that open in AutoCAD or any DWG editor, and your team brings them into the model or the clash detection software you already run.

No. Nomic is a new source of drafting capacity for your detailers and project engineers. They set the routing priorities, run coordination with the other trades, and make the final call on what goes to the field.

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What is a coordination drawing?

The overlay of trades that settles routing before install.

What is an as-built?

The drawings that record what was installed in the field.

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AI Drafting for Contractors: Coordination and As-Builts | Nomic