Lighting LayoutHow many lights does this room need, and where do they go? Lumen-method fitting count, spacing check and a ceiling grid for any room.

SheetT-09

MethodLumen method

Unitsm · lux · lm

By@smart_tools_every_week

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Space (typical target) Target illuminance (lux)

Length (m) Width (m)

Ceiling height (m) Work plane (m)

Lumens per fitting Watts per fitting

Maintenance factor UF (blank = auto)

Targets are common design values. Check your local code, such as NBC Part 8 or IS 3646, for the exact requirement.

Fittings–

Grid–

Average lux–

Power density–

Reflected ceiling plan

Step	Value	How