Task Plane Measurement Table
Australian lighting table for naming the assessed plane before comparing lux targets, lumen estimates or measured illuminance.
Table PDFTask Plane Measurement Table
Download the table with the page URL and retrieval date for offline lighting checks.
| Assessed plane | Typical lighting question | Note before comparing | Boundary |
|---|---|---|---|
| Desktop or study surface | Is the desk receiving enough maintained light for reading, writing or screen-adjacent work? | Desk height, screen direction, daylight side, meter points and control state. | Do not compare the reading with a floor-path target. |
| Kitchen bench or island | Does the task surface have enough light distinct from broad room ambience? | Benchtop height, cabinet shadow, pendant position and task-lighting layer. | A whole-kitchen average can hide weak bench areas. |
| Bathroom mirror or face plane | Is the vertical face area being lit rather than only the floor or vanity top? | Vertical reading position, side-light direction, glare and IP/exposure boundary. | Mirror lighting cannot be decided from a simple room lux average. |
| Circulation floor path | Is the walking path legible without treating it as a desk or bench task? | Floor path, obstruction, step edge, night or cleaning mode and measured points. | Emergency or egress assessment remains a separate standards-based check. |
| Shelf face or racking face | Can labels, stock or vertical surfaces be seen where people actually work? | Shelf height, vertical illuminance point, aisle width, shadows and luminaire row. | Horizontal floor lux does not describe vertical shelf visibility. |
| Display wall or retail face | Does the visible face have the intended brightness and colour quality? | Vertical surface, aiming angle, CCT, CRI/Ra, glare view and dimming state. | Display emphasis should stay distinct from general ambient lighting. |