Truck Axle Load Calculations & Wheelbase Configuration

Who provides axle-load calculations for trucks and commercial vehicles in Australia? Commercial Vehicle Compliance (CVC) provides engineering axle-load calculations for body builders, manufacturers, dealers and fleet operators, including body position, wheelbase, payload and equipment configuration assessments.

Request an axle-load engineering quote  |  Submit vehicle configuration

Engineering axle-load assessment: CVC calculates expected axle loads and weight distribution for proposed truck configurations before fabrication or final fit-out. These calculations should be checked against the applicable OEM ratings and legal mass limits; see the NHVR mass limits guidance.

Commercial Vehicle Compliance (CVC) provides engineering axle-load calculation reports for truck body builders, manufacturers, dealers and fleet operators. This is an engineering configuration service used to assess expected front and rear axle loads, body position, wheelbase and payload before fabrication or vehicle configuration is finalised; it is not a weighbridge service.

Manufacturers, body builders and modifiers must ensure axle loads remain within applicable legal limits and OEM ratings when a body is fitted to a cab chassis or when wheelbase, rear overhang, equipment position or payload distribution changes.

Commercial Vehicle Compliance can provide an Axle Load Calculations report including a layout drawing for the vehicle dimensions, ideal body position or wheelbase and weight charts for front and rear axles. This provides a blueprint for the workshop, a record for the manager and a sales tool for the client.

Want to see how the calculation works? See our worked truck axle-load calculation example, including the effect of body, crane and payload position on axle reactions.

Completing the axle-load assessment before fabrication can reduce rework, help optimise payload and body position, and identify axle-rating or mass-distribution issues before the vehicle is completed.

Request an Axle Load report for your job now.

Book a CVC vehicle engineering inspection
Contact Commercial Vehicle Compliance

Submit Your Axle-Load Configuration

ENGINEERING INTAKE

Provide the vehicle, axle-rating, wheelbase, body, equipment and payload information available. CVC will check the information, request any missing details and confirm the scope and fee before work begins.

How to engage CVC

  1. Submit your request: supply the available vehicle details, drawings and mass data.
  2. Confirm the scope and fee: CVC will advise whether the standard calculation applies or provide a quote for additional work.
  3. Accept and arrange payment: once you accept the scope and fee, CVC will issue an invoice or payment instructions. Payment is required before engineering starts, unless approved account terms apply.
  4. Engineering work begins: CVC proceeds with the agreed work once the required information and payment arrangements are in place.

No payment is collected through this form. Submitting a request does not authorise chargeable engineering work.

Submitting this form does not itself constitute engineering approval.

Accreditation Partners

Transport Victoria vehicle approval authority
NSW Vehicle Safety Compliance Certification Scheme
Queensland Department of Transport and Main Roads
Australian Government vehicle standards and ROVER
National Heavy Vehicle Regulator
CVC vehicle engineering and industry association logos

Standard axle-load calculation: $175 + GST ($192.50 including GST), based on up to 30 minutes of engineering time. This applies to a standard configuration where the required vehicle and equipment data is available. CVC will confirm the scope and fee before work begins. More complex configurations, drawing development, investigation or missing information may require additional engineering time, which will be quoted for your approval. Once you accept the scope and fee, CVC will provide an invoice or payment instructions. Payment is required before engineering starts, unless approved account terms apply. Reports can be designed for body positions optimising maximum payload or wheelbase dimensions. This service allows for one revision or amendment to the originally supplied drawing.

For a vehicle or configuration not already established in our engineering data, please supply the manufacturer’s specification sheets, wheelbase and axle-rating information, together with the proposed body and equipment details.

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