Chequered plates are a practical choice for pedestrian walkways and ramps because they combine slip resistance with structural strength. Proper fixing and anchoring are essential for safety, longevity, and serviceability. This article outlines best practices — from substrate preparation to fastener choice, expansion joints, and maintenance.

1. Substrate preparation

A stable, level substrate is the foundation of any good installation. Whether the plates are being fixed to concrete, steel framing, or timber:

  • Clean the surface of dust, grease, loose material, and rust.

  • Repair any cracks or unevenness in concrete (use appropriate patching mortar).

  • Ensure steel framing is straight, sufficiently rigid, and free from heavy corrosion before fixing.

Correct substrate slope and drainage must be considered at this stage to avoid water pooling on ramps and walkways.

2. Plate layout and tolerance

Plan the layout to minimize small cut pieces and ensure load paths align with support members. Key points:

  • Stagger joints where possible to avoid long continuous seams.

  • Leave controlled gaps for thermal expansion and drainage (typically a few millimetres — follow manufacturer guidance).

  • Maintain consistent edge clearance so fasteners sit at the recommended distance from plate edges to prevent cracking or shear.

3. Fixing methods

There are three common ways to secure chequered plates:

  1. Mechanical fasteners (bolts/screws):

    • Use high-strength bolts, countersunk screws, or coach screws depending on substrate.

    • For concrete, use chemical anchors or expansion anchors sized for expected loads.

    • Use washers beneath head and nut to spread load and avoid pulling through the raised pattern.

  2. Welding (for steel framing):

    • Tack-weld plates to steel supports at regular intervals, then finish-weld where permanent attachment is required.

    • Welding gives a flush appearance but consider galvanic compatibility and heat distortion; welds should be ground smooth on pedestrian ramps to avoid trip hazards.

  3. Clips and channel systems:

    • Proprietary clip systems or retaining channels allow removable panels for access and accommodate thermal movement. These are useful for maintenance-heavy installations.

4. Fastener selection and corrosion protection

Choose fasteners and anchors compatible with the plate material and environment. In outdoor or marine environments:

  • Use stainless steel or hot-dip galvanized fasteners to avoid galvanic corrosion.

  • Ensure any welds are treated or re-galvanized where possible to preserve corrosion resistance.

5. Expansion, joints, and sealing

Allow for thermal movement — especially on long runs or where plates meet different materials. Provide:

  • Expansion joints at regular intervals and at changes of direction.

  • Sealed joints where water ingress would cause corrosion beneath the plate, but avoid creating slippery sealed surfaces on ramps.

6. Safety finishes and anti-slip

Even with the raised pattern, additional measures can improve grip:

  • Apply anti-slip coatings where required (choose coatings compatible with the metal and expected foot traffic).

  • Ensure welds and fastener heads are finished flush or covered to eliminate trip points.

7. Inspection and maintenance

Regular inspection keeps walkways safe:

  • Check fasteners for looseness or corrosion.

  • Inspect for plate deformation, wear, or edge lifting.

  • Replace or refasten plates showing damage; recoat exposed steel after repair.

Proper fixing and anchoring combine good design, the right materials, and careful workmanship. Follow manufacturer recommendations and local codes, plan for movement and drainage, and schedule routine inspections — these steps will keep chequered plate walkways and ramps safe and durable for years.