1. Define the decision the study must inform
State whether the decision is a shortlist, layout discussion, tender response, sample review or internal comparison. Describe the illuminated task in plain language: a route, entrance, yard, façade, work area or perimeter. A study can support a conversation, but it does not by itself approve a model, establish legal compliance or guarantee a site outcome.
2. Locate and draw the site
Provide the country, town or coordinates where appropriate, a north direction, site plan and current photographs. Mark the area to be lit, changes in level, obstructions, existing columns, boundaries and nearby windows or roads. Give dimensions from a drawing when available; estimate only when that is all you have, and identify the estimate as provisional.
3. Record mounting and surface context
Show proposed mounting locations, available heights, spacing ideas, bracket orientation and practical access. Describe the ground, roadway, paving, vegetation, walls and surrounding reflectance context without assigning invented values. Include maintenance access and any constraints on trenching, wiring, pole work or panel placement. These details affect what may be physically suitable before a lighting result is considered.
4. Explain how the light should behave
Describe the critical hours, occupancy pattern, desired control behaviour and periods when visibility matters most. For solar systems, add known shading, orientation, local seasonal conditions and anything that may restrict daylight collection. Do not convert a general product description into an autonomy or output promise for this site; ask which assumptions would be used for a named configuration.
5. Separate criteria from assumptions
List the standard, client brief, authority requirement or internal rule that governs the project, then attach the source where possible. Keep client preferences separate from mandatory criteria. Ask the person preparing the study to state the calculation basis, exclusions, named luminaire file and revision. That record lets reviewers distinguish a requested target from a result that depends on inputs.
6. Identify the exact candidate product
Use a family or model identifier only when it is known. If a photometric file, drawing, control setting, optic or mounting arrangement is requested, ask whether it belongs to the exact proposed configuration. A file or study for one configuration should not silently stand in for another. Xiuben Lighting’s product finder can help frame an application conversation, while the quality and documents route explains why scope matters.
7. Request a reviewable handoff
Ask for a dated study package that identifies the project inputs received, assumptions made, geometry, chosen configuration, calculation or visual outputs, revision and open questions. DIALux is lighting-design software. Confirm who will prepare the study and supply the files; using the software alone does not establish a project result.
Limits and next step
Ask whether DIALux work and photometric files are available for your exact enquiry, who will review the design and what timing can be agreed. Confirm any required compliance sign-off separately. Keep missing inputs visible and retain the final evidence with the quote and sample record.
Send the site context, not just a category name.
Use the contact route to describe the application, attach drawings or photographs separately, and identify which inputs remain unknown.