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Mini Open Mesh Marina Deck Load Data

The following load data guidance applies to GRPGS Mini Open Mesh GRP Marina Decking panels featuring a 12mm × 12mm open mesh design with a gritted anti-slip surface. This page is intended to support engineers, specifiers, and designers when selecting appropriate panel thicknesses for marina, pontoon, and pedestrian decking applications.

Load Capacities

Unsupported Span (unfixed) over a 1m length
Panel Thickness Weight kg/m2 Load Type 300mm 500mm 600mm 750mm 1000mm 1200mm 1500mm
22mm 15kg Point Load 1006kg 362kg 251kg 161kg 91kg 63kg 40kg
UDL 2164kg 1220kg 706kg 361kg 153kg 88kg 45kg
30mm 20kg Point Load 2049kg 972kg 675kg 432kg 243kg 169kg 108kg
UDL 4261kg 2557kg 1896kg 971kg 410kg 237kg 121kg
All values are based on a 1% deflection limit and are intended as guidance only. Final panel selection should be confirmed against project-specific loading and structural requirements.

Features of Mini Open Mesh
Marina Decking (12mm × 12mm)

  • Anti-slip surface – Gritted finish tested to 1.04 CoF (BS 4592-0), providing excellent pedestrian safety in wet, oily, and icy conditions.
  • Optimised open mesh design – 12mm × 12mm apertures deliver an ideal balance of strength, drainage, and underfoot comfort for marine and leisure environments.
  • Electrical insulation – Voltage breakdown of 18kV/mm (ASTM D149), suitable for marina, pontoon, and industrial applications.
  • High structural density – GRP construction with a specific gravity of 2100 kg/m³ (ISO 9001 certified), ensuring durability and long service life.
  • Thermal stability – Low expansion factor of 13 × 10⁻⁶ mm/mm (ISO 9001), maintaining dimensional stability across temperature extremes.
  • Low water absorption – Just 0.45% over 24 hours (ASTM D570), ideal for constant exposure to moisture and saltwater.
  • Wide operating temperature range – Reliable performance from -100°C to +200°C.
  • Fire resistance – Achieves Class 2 flammability rating.
  • Frost & weather resistance – Tested to MOAT 22, making it suitable for harsh marine and coastal environments.

Mini Open Mesh GRP Marina Deck Load Data FAQs

How should 12mm mini open mesh GRP decking load data be interpreted?

The load data shows the maximum point load and uniformly distributed load (UDL) that 12mm × 12mm mini open mesh GRP decking panels can support across different unsupported spans. These values assist engineers and specifiers in selecting suitable panel thicknesses for pedestrian and marina decking applications.

What does the 1% deflection limit mean in GRP decking load tables?

A 1% deflection limit means the panel has been tested to flex no more than 1% of its unsupported span length under load. This benchmark helps ensure adequate stiffness, pedestrian comfort, and long-term structural performance in marine environments.

Should mini open mesh GRP decking load data be verified for each project?

Yes. Load data is provided as guidance only. Final panel selection, span configuration, fixings, and load requirements should always be reviewed and confirmed by a qualified engineer to ensure suitability for site-specific conditions.

Need technical advice or specifications? Our GRP specialists are happy to help.