Before You Start: What “DDA Compliance” Means Today
“DDA-compliant” is common shorthand for entrances that are accessible, safe and inclusive. Today, design and testing should follow the Equality Act 2010, BS 8300-1/2, BS EN 16005 for powered doors, and Approved Document M. At Access Automation, compliance means practical, user-first design backed by evidence.
- Know the rules: Equality Act 2010, BS 8300-1/2, BS EN 16005, and Approved Document M.
- Get tools ready: tape, spirit level, force gauge, light meter, stopwatch, and a photo log.
- Plan safe working: isolate power where required, cordon the area, and complete RAMS and a door risk assessment.
- Involve facilities, health and safety, the fire officer, and a competent automatic door engineer.
Goal: a risk-assessed audit you can measure, photograph, document and action safely.
Approach Routes And Landings
Access starts before the door. People need space to pause, turn and approach on the level, with good light and no trip points. Check in both directions and at busy times.
- Provide clear routes ≥ 1200 mm wide and a level landing around 1500 x 1500 mm at the door.
- Keep thresholds flush; if unavoidable, max ~15 mm with a bevel. Recess mats so edges don’t snag wheels.
- Provide bright, even, glare-free lighting; measure and record with a light meter. Keep routes clear of bins, A-boards and cables.
Pass if the approach is level, uncluttered and comfortable to navigate at slow speed.
Doorway, Clear Opening And Vision
Measure the effective clear opening at the tightest point and confirm safe sightlines for seated and standing users. Remove visual obstructions that cause hesitation.
- Effective clear width: aim for ≥ 800 mm with the leaf at 90°. Consider ironmongery projection and any door stops. Manage double leaves so the active leaf provides adequate width.
- Fit vision panels with sightlines roughly 500–1500 mm above floor; keep glazing clean and free of posters at eye level.
- On large glazing, add two high-contrast bands at about 850–1000 mm and 1400–1600 mm; ensure contrast against backgrounds.
Pass if people can see and be seen, and pass through without turning sideways.
This image was generated with AI and may not always represent the product or service exactly.
Activation Devices And Access Control: Heights And Reach
Controls must be easy to see, reach and use first time. Plan for wheelchair reach, standing users, and people carrying items or guiding children.
- Push pads/touchless sensors at 900–1100 mm high, ≥ 300 mm from corners, with ≥ 500 mm clear latch-side space where manual interaction is needed.
- Readers/intercoms at 900–1100 mm with clear visual feedback; add an induction loop if audio is used. Provide good lighting and weather protection.
- Keep a level, clear operating space; aim for ~1500 x 1500 mm turning area and remove obstacles within reach zones.
Pass if all users can operate controls without stretching, twisting or awkward angles.
Handles And Hardware: Types, Sizes And Usability
Handle choice defines usability. Prioritise easy grip, low effort and high visibility. Avoid fittings that demand pinch or twist strength.
- Use D-pulls or levers, not knobs. Aim for 19–35 mm diameter, ≥ 300 mm length, and ~45 mm stand-off for hand clearance.
- Fix height at 900–1100 mm. Test with a clenched fist; thumb-turns need ~50 mm wings for leverage.
- Ensure strong colour contrast with the door leaf; consider antimicrobial finishes in hygiene-sensitive areas.
Pass if the handle is obvious, comfortable and works without finger strength.
Pick The Right Automation And Sensor Coverage
Match the operator to the space, traffic and fire strategy. Set activation and safety sensors to protect approach, standing and closing zones with no blind spots.
- Sliding operators suit narrow corridors or draught lobbies; swing operators suit many retrofits and fire-rated sets.
- Fit presence/safety sensors both sides, covering approach and the sweep/closing path; add finger guards on hinge edges and guard rails where approach angles are shallow.
- Integrate with fire alarm, access control and BMS; set fail modes to protect egress. Function-test all interfaces on commissioning.
Pass if the door type and sensors work together to prevent contact and entrapment.
Timings: Opening Speed And Hold-Open Time
People should not be rushed. Configure calm, predictable movement and hold-open periods that suit your users and building type.
- Opening speed: a smooth 3–5 seconds is a good public baseline; slow further for complex approaches or mobility-impaired users.
- Hold-open: at least 3 seconds; in healthcare, 7–12 seconds. Ensure sensors re-trigger hold-open while anyone is in the threshold.
- Enable logic for two-way traffic and trailing users so doors don’t close on people turning or following through.
Pass if a slow walker or wheelchair user can pass without hurrying.
This image was generated with AI and may not always represent the product or service exactly.
Safe Closing Forces And Speeds
Measure forces with a calibrated gauge, adjust the operator, and record the results. Re-test after every change.
- Test at the leading edge and other points per BS EN 16005; record peak and sustained forces and the positions tested.
- Set forces to meet BS EN 16005. As a guide, target low sustained forces (often around or below ~67 N) with brief peaks that decay quickly.
- If it fails: reduce speeds/forces, expand sensor coverage, fit protective edges, or relocate activators; then re-test and log the new readings.
Pass if all test points comply and are documented in your file.
Signage, Contrast And User Guidance
Clear instructions and good contrast reduce confusion. Provide visual and, where useful, audible feedback during operation.
- Use consistent “Automatic door” and “Push to open” signs; add tactile/braille where needed at 1400–1700 mm.
- Ensure strong LRV contrast (around 30 points difference) and avoid reflective glare on signs, controls and glazing bands.
- Choose activators with LEDs and optional sounders; add a discreet audible cue in noisy areas.
Pass if the method of operation is instantly obvious in all lighting conditions.
Power Failure, Fire Strategy And Security
Doors must fail safe without blocking escape. Test emergency releases, manual overrides and back-up power regularly.
- Confirm fail-safe egress on power loss; test green break-glass at ~900–1100 mm and check the manual override opens the door easily.
- Check any battery back-up and that doors can be pushed/pulled if automation is isolated.
- Use secure, compliant locking that preserves escape; standardise cylinders and key control at accessible heights.
Pass if escape is always possible without special tools or strength.
Environment And Seasonal Operation
Weather, light and temperature affect safety and comfort. Balance energy control with accessible, predictable operation year-round.
- Use draught lobbies where possible; tune speed and dwell to reduce heat loss while maintaining accessibility.
- Enable freeze prevention; add canopies and recessed mats; check sensors against low sun, rain and wind-driven debris.
- Reduce slam noise and vibration; add seals or buffers; refine speeds and forces to suit site conditions.
Pass if doors stay safe, reliable and efficient in all seasons.
Maintenance, Servicing And Records
Compliance is ongoing. Build a routine of user checks, planned servicing and prompt fixes. Keep evidence ready for audit.
- Do daily visuals, weekly function tests and monthly handle/hinge checks; log findings with photos.
- Service to BS EN 16005 recommendations; busy sites often need 2–4 visits a year; re-check forces after any adjustment or repair.
- Fix faults early: realign sensors, replace worn parts, ease stiff latches; keep door-by-door histories, risk assessments, commissioning sheets and service reports.
Pass if logs are clear, servicing is current, and issues are resolved quickly.
FAQs
Is “DDA-Compliant” Still The Correct Term?
People still use it, but UK compliance now follows the Equality Act 2010 alongside BS 8300, BS EN 16005 and Approved Document M. Treat “DDA-compliant” as shorthand for accessible, inclusive door design.
What Is The Minimum Clear Opening For An Accessible Door?
Aim for an effective clear opening of at least 800 mm. Measure the tightest gap between the open leaf and frame/stop with the door at 90°.
Where Should Push Pads Or Readers Be Mounted?
Mount at 900–1100 mm above floor and at least 300 mm from internal corners. Keep a 500 mm clear space on the latch side where manual interaction is needed.
How Long Should Automatic Doors Stay Open?
Set at least 3 seconds for general use; increase to 7–12 seconds in healthcare. Ensure sensors re-trigger hold-open while someone is in the doorway.
How Are Closing Forces Checked?
Use a calibrated force gauge at the leading edge and other points per BS EN 16005. Record peak and sustained forces, adjust the operator until readings comply, then re-test and log.
Will Doors Still Open In A Power Cut?
Doors should fail safe for escape in line with the building’s fire strategy. Test green break-glass release, manual overrides and any battery back-up during routine checks.