Article 11.5

Final Plank Reference Volume

Technical Regulations

Article 11.5

FIA Source

Final Plank Reference Volume

Chapter: APPENDIX C2: REGULATION VOLUMES

In Simple Terms

This rule establishes the official measurement volume of the car's plank (the wooden board underneath the chassis that protects it). The 'RV-PLANK' is the precisely defined space used by FIA officials to check if a car's plank meets size and wear regulations throughout the season.

  • RV-PLANK is the official reference volume for the plank component
  • The plank is measured against this defined volume to ensure compliance
  • This volume was fully detailed in the previous section (11.4)
  • Used by stewards to verify plank legality during technical inspections
Official FIA Text

The fully defined volume in §11.4 is 'RV-PLANK'.

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2026 Season Regulations

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