Good project information does not guarantee a good design—but poor information limits every design
Sports lighting calculations are built from real-world geometry and defined performance criteria. The software can calculate only the site, poles, luminaires, aiming constraints and target values entered into the model. When those inputs are incomplete, a designer must either pause the work or introduce assumptions.
A preliminary study can legitimately use assumptions, provided they are visible and controlled. The problem begins when an estimated pole height, an unverified boundary or an informal “competition-level” request is treated as confirmed project data.
For the broader project-risk context, read Why Sports Lighting Projects Fail Before the First Fixture Is Installed. This article goes one level deeper and defines the information package itself.
The information package should cover eight project layers
Not every project requires the same amount of data. A community training field and a broadcast stadium will not have identical design inputs. However, the categories below apply to almost every new-build or retrofit project.
Site and field geometry
Define the physical area to be illuminated and the environment around it.
- Playing-area dimensions and run-offs
- North arrow, units and site levels
- Property line and relevant surroundings
- Dimensioned plan or coordinates
Pole and mounting geometry
Record where luminaires can actually be installed.
- Pole coordinates and mounting heights
- Crossarm dimensions and available positions
- Setback from field boundaries
- Roof, mast or structural restrictions
Existing lighting system
Needed for retrofits and phased upgrades.
- Fixture model, quantity and wattage
- Current mounting and aiming information
- Driver, circuit and control arrangement
- Day and night site photographs
Lighting goals and criteria
Describe the intended use rather than requesting a wattage.
- Sport and level of play
- Horizontal and vertical criteria
- Uniformity, glare and spill constraints
- Broadcast or camera requirements
Electrical information
Confirm whether the proposed system can be supplied and protected.
- Voltage, frequency and phase
- Available capacity and panel location
- Cable route and driver location
- Protection, earthing and surge strategy
Controls and operating scenes
Define how the venue will actually use the lighting.
- Training, match and maintenance scenes
- Dimming or control interface
- Zone or group requirements
- Manual fallback and responsibility
Environment and compliance
Identify constraints outside the playing area.
- Homes, roads, cameras and observers
- Curfew and local planning conditions
- Wind, corrosion, dust and temperature
- Applicable codes or tender criteria
Delivery and responsibility
Clarify what the design is expected to support.
- Budget stage or final procurement stage
- Deadline and construction sequence
- Installer and structural reviewer
- Approval and acceptance authority
| Information category | Minimum starting point | Needed before final release |
|---|---|---|
| Field geometry | Dimensioned plan or verified length and width | Controlled drawing with orientation, boundaries and relevant site levels |
| Pole geometry | Approximate positions and declared heights for a concept only | Measured coordinates, mounting heights and available mounting arrangement |
| Lighting target | Sport, intended use and target class | Written criteria, maintenance basis, constraints and acceptance method |
| Product configuration | Representative luminaire family for an early study | Exact model, optic, output setting, accessories and photometric revision |
| Structure | Known pole type and visible condition | Review by the responsible qualified party where reuse or modification is proposed |
| Electrical and controls | Supply type and high-level operating need | Interface, circuits, driver arrangement, control responsibility and test basis |
Site geometry must describe more than the painted field lines
A sports field plan should identify the playing area, safety run-offs and the physical context that can affect pole placement, aiming, access or off-site light. A clean rectangle with “105 m × 68 m” is useful, but it is rarely a complete lighting model.
Provide dimensions in a form that can be checked
Preferred inputs include a DWG or DXF drawing, a survey file, a dimensioned PDF, or a coordinate table tied to a clear origin. Google Earth screenshots and hand sketches can support early discussion, but scale, elevation and object position should not be assumed accurate without verification.
Useful site data
- One consistent unit system
- North arrow and drawing scale
- Field and run-off dimensions
- Pole coordinates and base elevations
- Property line and relevant obstacles
- Photographs linked to viewing direction
Data that needs clarification
- “Standard football field” without dimensions
- Pole positions marked approximately on a photo
- Mounting height confused with total pole height
- Old drawings that do not match the current site
- Coordinates from different reference systems
- Dimensions copied without units or revision date
When the field has stands, roof structures, fencing, trees or buildings, include their height and offset where they may block light, limit aiming or affect crane access. For broadcast projects, identify camera positions and directions rather than stating only that the venue is “TV-ready.” UEFA’s stadium lighting guidance, for example, treats camera plans and vertical illuminance directions as part of the lighting system context.
Existing-pole projects require both optical data and structural evidence
For a new-build project, pole geometry can be coordinated with the lighting design. In a retrofit, the existing poles define a fixed starting condition. Their locations may limit achievable uniformity, aiming angles, fixture quantity and spill-light control even if the poles are structurally reusable.
| Existing asset | Information to provide | Why the designer needs it |
|---|---|---|
| Pole | Coordinates, pole type, total height, mounting height, top diameter, visible condition and identification number | Defines geometry and links each installed position to the calculation and drawings |
| Crossarm / platform | Width, depth, attachment method, fixture positions, bracket spacing and photographs from several angles | Determines whether the proposed fixture arrangement can physically fit and be aimed |
| Foundation and structure | Original drawings, previous calculations, inspection records, corrosion information and known modifications | Supports review by the responsible structural professional; the lighting simulation does not prove structural capacity |
| Existing luminaires | Model, wattage, quantity per pole, approximate optics, mass, EPA if known, aiming and operating condition | Helps compare the current system, estimate circuit loads and plan removal or phased replacement |
| Drivers and electrical gear | Location, enclosure, cable length, voltage, circuits, panel capacity and control wiring | Affects compatibility, voltage drop, maintenance and whether remote-driver options are practical |
For a deeper retrofit review, see How to Evaluate a Sports Lighting Retrofit Project Before Ordering and What to Check Before Reusing Existing Sports Lighting Poles.
“We need 1,000 W stadium lights” is not a lighting target
A design request should define what the venue must achieve, not prescribe a product output before the site has been evaluated. Fixture wattage, quantity and optics are results of the design process.
Start by stating the sport, intended users and highest operating level. A field used for daily training, local competition and occasional televised events may need several operating scenes rather than one permanent output level.
Photometric criteria
- Applicable standard, tender or governing-body requirement
- Maintained or initial horizontal illuminance basis
- Uniformity criteria and calculation grid
- Vertical illuminance directions where relevant
- Glare, spill light or obtrusive-light constraints
Source and image requirements
- Colour rendering and colour temperature
- Flicker or slow-motion camera requirements
- Player, spectator and camera observer positions
- Source visibility or high-angle-light limitations
- Special surface reflectance concerns
Lighting scenes
- Training, competition and broadcast modes
- Partial-field or zoned operation
- Warm-up, cleaning and maintenance modes
- Curfew or automatic switch-off
- Emergency or fallback requirements
How success will be checked
- Measurement grid and reference plane
- Initial or maintained acceptance basis
- Meter and calibration requirements
- Operating scene during testing
- Who reviews and signs the result
ANSI/IES RP-6-24 provides recommended practice for sports and recreational lighting in North America. CIBSE/SLL LG4: Sports Lighting aligns its recommendations with BS EN 12193 and addresses principles, sport-specific requirements, maintenance, operation and equipment. For high-level football venues, UEFA’s 2023 guide includes pitch geometry, camera plans, vertical illuminance directions, power, controls, environmental effects and test reporting. The project brief should state which source governs rather than mixing criteria from unrelated documents.
Electrical and control data should be available before the product configuration is frozen
Optical performance may lead the lighting design, but the luminaires must still operate within the site’s electrical and control infrastructure. A product configuration that is photometrically suitable may be impractical if available power, driver placement or control responsibilities have not been defined.
| Topic | Questions to answer |
|---|---|
| Supply | What voltage, frequency and phase are available? Is the supply stable, and is the project new-build or tied to existing circuits? |
| Capacity | What is the available connected load? Are there limits per panel, circuit, pole or operating scene? |
| Driver arrangement | Will drivers be integrated, mounted on the pole, installed in a ground-level enclosure or located elsewhere? What cable distance is expected? |
| Protection | What earthing, surge protection, isolation and local code requirements apply? Who designs the final electrical protection scheme? |
| Control | Is 0–10 V, DALI, DMX, contactor switching or another interface required? Who supplies the controller, commissions addresses and owns system integration? |
| Fallback | What should happen if the network, controller or communication link fails? Is manual operation required? |
| Operations | What scenes, schedules, zones and user permissions are needed? Will future expansion be required? |
ZC Lighting should be positioned as a professional lighting-hardware and interface partner: providing compatible driver options, dimming or DMX-ready configurations where available, product electrical data and connection information. A complete venue controls architecture still requires a clearly named integrator and commissioning responsibility.
Every input should carry a quality level and revision reference
Two projects may both provide a pole height of 25 m, but the data quality can be very different. One value may come from a current survey; the other may be an estimate from a photograph. Treating them as equal creates avoidable risk.
| Level | Definition | Appropriate use | Design implication |
|---|---|---|---|
| A · Verified | Measured or formally confirmed, with source and date | Detailed design and final coordination | Suitable as a controlled input, subject to normal professional review |
| B · Documented | Shown on a credible drawing or record but not recently field-verified | Detailed development with a verification action | Track the risk and confirm before release where material |
| C · Estimated | Derived from photos, maps, typical values or informal statements | Budget study or option comparison | Mark clearly; configuration and quantity may change |
| D · Unknown | No reliable value is available | Gap identification only | Do not hide the gap; assign an owner and verification deadline |
Control document versions as well as values
Use a simple project register containing the file name, revision, date, author, units and approval status. When the pole plan changes, the photometric model, aiming table, quotation and structural arrangement may all require review. A later file with an unclear name such as “final-new-v3.pdf” is not reliable change control.
North_Field-Lighting-Pole_Coordinates-R02-20260803.xlsx.Incomplete information should lead to a provisional design—not false precision
Many projects cannot provide every input at the first enquiry. That does not mean design support must stop. It means the deliverable and confidence level should match the available information.
Acceptable preliminary process
- List missing information explicitly
- Use stated assumptions with source and rationale
- Identify which outputs may change
- Provide a budgetary or option-study label
- Assign verification actions before final release
High-risk process
- Fill gaps with typical values without disclosure
- Issue a final-looking report from estimated geometry
- Quote a fixed quantity without revision conditions
- Change product or optics without recalculation
- Allow different parties to use different drawings
A supplier should also distinguish between a preliminary product recommendation, a photometric concept, a coordinated design submission and a final construction or approval package. These terms are not interchangeable.
Sports lighting project information checklist
Use this list before requesting a detailed design or final quotation. Not every conditional item will apply, but each category should be reviewed and marked as verified, estimated, unknown or not applicable.
Frequently asked questions
Can a sports lighting design start without a CAD drawing?
A preliminary concept may be possible from a dimensioned PDF, survey sketch or verified coordinate table. A CAD file is helpful because it reduces transcription work and supports revision control, but the essential requirement is accurate geometry with clear units, orientation and source.
What information is essential for an existing-pole retrofit?
Provide pole coordinates, mounting heights, crossarm dimensions, current fixture arrangement, photographs, available structural records, electrical data and the required lighting performance. The responsible structural professional should determine whether the poles, foundations and crossarms can be reused.
Can estimated pole heights be used in a lighting simulation?
Yes, for a clearly labelled preliminary study. They should not be treated as verified final inputs. A mounting-height change can alter throw distance, aiming, optic selection, uniformity, glare and fixture quantity.
Should the target be stated as average lux only?
No. State the applicable sport and level of play, whether values are initial or maintained, uniformity, vertical illuminance where relevant, glare or spill constraints, broadcast requirements, operating scenes and the intended acceptance method.
Do site photos replace measured coordinates?
No. Photos help identify context, condition, obstacles and access, but perspective distortion makes them unreliable for exact pole locations, mounting heights or setback dimensions unless supported by measured reference points.
What should be done when some information is unknown?
Mark it as unknown rather than presenting an estimate as fact. The designer can state the resulting assumption, explain which outputs may change and identify what must be verified before final selection, procurement or approval.
Share a controlled project brief—not only a requested wattage
Send the field plan, pole data, target lighting criteria, site photographs, electrical basis and environmental constraints. ZC Lighting can help review the input package, identify missing product-related information and evaluate suitable luminaire, optic and output configurations for further project development.
Sources and professional guidance
- Illuminating Engineering Society, ANSI/IES RP-6-24: Recommended Practice—Lighting Sports and Recreational Areas.
- CIBSE / Society of Light and Lighting, LG4 Sports Lighting (2023).
- UEFA, UEFA Stadium Lighting Guide 2023.
- FIFA, Football Stadiums Guidelines: Technical Systems and Services.
- DarkSky International, Outdoor Sports Lighting Guidelines.
Project-specific contracts, governing-body requirements, local codes and authority approvals take precedence over this general preparation guide.