What should an asbestos enclosure drawing show?

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 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.