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STANDARDS & FORMULAS

DIALux to Revit

DIALux evo’s luminaires placed in Revit, with Em, U0 and W/m² worked out beside DIALux’s own.

Standards and regulations

  • EN 12464-1
    Light and lighting - lighting of work places, indoor

    The calculation grid, the maintained illuminance Em and the uniformity U0.

  • CIBSE
    CIBSE / SLL lighting guidance

    The first-reflected-flux estimate of the light reflected by the room.

Formulas

Direct light at a point

E = I(C, γ) × cos³γ / h²

Results

Em = mean(E) × MF · U0 = Emin / Em · LPD = W / m²

Design rules it applies

  • The same method as the Lighting Design tool

For reference. MO.tool works these out to help your design; the engineer remains responsible for it. Always check the edition of each standard your project uses and the requirements of the local authority (DEWA, ADDC, Civil Defence…).

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