CIBSE

CIBSE (Chartered Institution of Building Services Engineers) is the UK's professional body for building services engineering. Its published Guides — particularly Guide A (Environmental Design), Guide B (HVAC), and Lighting Guide LG7 — are widely referenced in Indian office design, especially on projects for UK-headquartered multinationals or those targeting internationally recognised certifications.

CIBSE LG7, which sets illuminance levels for display screen equipment environments (typically 300–500 lux at the desk with low glare), is commonly used alongside IS 3646 in premium Indian fit-outs. Indian MEP consultants increasingly hold MCIBSE membership, so the guidance is genuinely being applied — not just cited for proposal purposes.

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