This section of the Chassis Code of Practice (CoP) provides guidance on the design, installation and modification of tipping bodies and tipping systems fitted to heavy-vehicle chassis. Its purpose is to assist Heavy Vehicle Specialist Certifiers in ensuring that tipper installations achieve appropriate levels of safety, durability, structural integrity and compliance with New Zealand heavy vehicle requirements.
What does this section of the Code of Practice cover?
The Tipper CoP section covers common tipper configurations, chassis and subframe design considerations, structural load cases, allowable stress criteria, vehicle stability during tipping operations, and the design of critical components such as hoists, hinges, body mountings, body locks and load cells. The objective of this CoP section is to ensure that the completed vehicle maintains adequate structural integrity, durability and safety throughout its intended service life.
What guidance is provided?
Tippers impose loading conditions that differ from those of fixed-body vehicles, including concentrated body and payload loads, elevated centres of gravity, load redistribution during tipping, and dynamic forces generated during loading, unloading and body movement. These conditions can significantly influence chassis stresses, stability, body mounting requirements and the performance of associated systems.
This section provides guidance for the design, modification, assessment and certification of heavy-vehicle tipping bodies and associated systems. It pays particular attention to loading factors and allowable stresses.
Chassis Code of Practice: Tippers | 3.9 MB
Can I submit feedback?
Your feedback is welcome and will be reviewed and considered by heavy vehicle engineers involved in creating the CoP. A new version of that section will be uploaded if changes are required.
