Lux Level
Lux (lx) is the SI unit of illuminance. The amount of light falling on a surface per unit area. Lighting design standards specify target lux levels by task type: 300–500 lux at the workplane for general office work, 750 lux for technical drawing areas, 50–100 lux for circulation and breakout spaces. CIBSE LG7 and IS 3646 Part 1 are the primary references used in Indian office projects.
Achieving the right lux level is only part of the specification. Uniformity ratio, glare control (UGR below 19 for display screen tasks), and colour rendering index (CRI 80+) are equally important. In a 12,000 sq ft open-plan floor in Baner, a well-calibrated DALI lighting system running at 350 lux with occupancy dimming can cut lighting energy use by 40% versus a fixed-output fitting layout.
Related terms
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Certifications and Standards Relevant to Indian Commercial Interiors
How Lux Level fits into an office project
Lux Level matters when a workplace moves from a broad design idea to a coordinated brief. The team should define what the term means for this project, where it appears in the drawings or specifications, and who approves it. That prevents a familiar word from hiding a gap in scope, procurement, installation, or handover.
Questions to settle early
- What outcome should Lux Level support for the people using the workplace?
- Which drawings, schedules, samples, or calculations will confirm the requirement?
- What needs to be coordinated with architecture, interiors, MEP, technology, or building management?
What to record in the project brief
Record the selected approach, responsible owner, approval point, relevant exclusions, and the evidence required at installation or handover. If the requirement affects cost, lead time, maintenance, safety, comfort, or future flexibility, state that connection plainly. The definition is a starting point. The project brief turns it into a checkable decision.
A practical checklist for Lux Level
When Lux Level appears in a workplace brief, avoid treating it as a standalone line item. Connect the requirement to the people, spaces, services, and operating routines it is meant to support. A short definition is useful for orientation. A good brief also explains the project context, the expected performance, and the evidence needed before approval.
Before design sign-off
Confirm the existing site condition and any landlord or building-management rules that affect the decision. Mark the requirement on the relevant plans and schedules. Check interfaces with adjacent trades, access for installation, maintenance access, replacement cycles, and the effect on the programme. If alternatives are possible, compare them on whole-life suitability rather than headline purchase price alone.
At procurement and handover
Keep the approved specification, supplier information, samples or calculations, and agreed exclusions together with the project record. At handover, verify that the installed result matches the approved design and that the client receives the information needed to operate and maintain it. This makes Lux Level a useful control in delivery, not just a glossary phrase.
For a project-specific discussion, start with the Vektor Spaces services, review the delivery process, and bring the relevant questions to a project enquiry.
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