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Drawing essentials · Written guide · 2 min read

What should an asbestos enclosure drawing show?

Show the work area and enclosure boundary, airlocks and baglocks, equipment positions, transit and waste routes, a readable key, drawing identification and scale information. Match the drawing to the site-specific written RAMS or plan of work; the checklist below helps review its clarity, not the adequacy of the enclosure design.

One example drawing, two views

These editor captures show the same illustrative room, airlock, baglock, NPU and van in 2D and 3D. Use the plan to check positions, then the model to explain the layout.

Example room with a straight airlock, dogleg baglock, NPU and panel van in the 2D editor
2D: review the arrangement of the room and equipment.
The same example room and equipment in the 3D editor
3D: inspect the same model from a different viewpoint.

For a separate fictional workshop example, inspect the exported sheet, title block and key, or open the sample 1:100 PDF. Print that PDF at actual size (100%). These examples demonstrate the software; they are not site designs or evidence of compliance.

By AsbestoPlan · Published 2026-06-16 · Updated 2026-09-21 · Planning support only — not compliance advice

Core layout elements

The drawing should match the narrative in your RAMS. If the method statement describes a three-stage airlock, the visual should show it — not a generic box copied from a previous job.

AsbestoPlan room summaries measure spans, area and perimeter between the inside wall faces, using each wall’s modelled thickness. Irregular rooms show maximum internal spans; standalone walls show centreline lengths. Include finishes in the modelled thickness and check against site measurements.

For scale printing, export a 2D PDF at a numeric scale on a paid plan and print at actual size (100%). Fit-to-page output, PNG/JPG images and 3D views are not to scale. Resizing a drawing after export changes its printed scale.

  • Enclosure boundary and work area
  • Airlock and baglock positions
  • Negative pressure unit placement and airflow direction
  • Decontamination and waste routes
  • Warning signs and key equipment
  • Drawing title, number, revision and the site or area it describes
  • Drawing dimensions and a stated print scale, or an explicit not-to-scale note

What reviewers look for

Site supervisors ask: where do operatives enter, where does waste leave, and is the NPU positioned logically? Client reviewers ask: does this match the scope we approved? Clear symbology and a scene key reduce back-and-forth.

Further reading and examples

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For step-by-step editor demonstrations, browse the video tutorials.