Selection scope and sizing decision
Useful for: Route planners and buyers converting collection data into a body-size requirement
Volume and mass are different constraints. Light bulky waste may fill the body first, while dense or wet waste may reach the legal mass limit with unused volume.
A sizing exercise should use route samples and conservative variation rather than a generic compaction claim. It should also preserve enough chassis margin for crew, fluids, lifter equipment and options.
Sizing inputs
Supply these values before a model, body size or working rating is selected:
- 01Measured loose waste volume by route
- 02Measured waste mass and density variation
- 03Collection days, stops and seasonal peaks
- 04Bin or loading interface
- 05Trip and disposal-site cycle time
- 06Chassis tare, body tare and axle limits
From sizing inputs to model approval
Size from the operating requirement, test the complete configuration and retain the project records that control the final selection.
- 01Define the target duty
Garbage-truck body volume sizing
- 02Quantify sizing inputs
Measured loose waste volume by route; Measured waste mass and density variation
- 03Test the complete vehicle
Route volume and Waste mass must both pass.
- 04Approve the selected rating
Route sampling record with volume and mass; Body and loading-system specification
Selection and sizing matrix
Use every row to test the proposed size. A nominal value is not sufficient when payload, geometry or operating limits conflict.
Scroll horizontally to view all columns.
| Decision factor | What to choose or check | Limit or condition |
|---|---|---|
| Route volume | Use measured loose volume and variation. | A single average can miss peak-day overflow. |
| Waste mass | Check density and legal payload for each scenario. | The body may reach mass limit before full volume. |
| Compaction | Use stream-specific, verified operating evidence. | A headline ratio is not guaranteed route performance. |
| Vehicle fit | Check body length, wheelbase, axle loads and access. | Larger volume can reduce maneuverability or payload margin. |
Applied calculation
Estimate loose route volume, then check mass and cycles Body volume starts with measured route inputs and remains subordinate to payload and discharge constraints.
- 01Loose route volume14.4 m³
120 × 0.12 - 02Illustrative compacted volume4.8 m³
14.4 ÷ 3 - 03Mass checkMust be calculated separately
Expected collected mass ≤ legal payload and each axle limit
Decision: The example suggests enough geometric volume for one cycle, but no body size is approved until measured density, payload, reserve, liquids and discharge access are checked.
Evidence boundary: The 3:1 input is an illustrative route measurement, not a universal compaction ratio or a KEEYAK performance claim.
Selection evidence checklist
Ask for evidence that is traceable to the selected model, configuration, vehicle or project scope. A record from another project is context, not verification.
- Route sampling record with volume and mass
- Body and loading-system specification
- Completed tare and axle-load calculation
- Discharge-site compatibility review
Selection and sizing traps
Multiplying bin volume by stop count
Better selection method: Account for actual fill, waste mass, repeat lifts and route variation.
Using maximum compaction as routine performance
Better selection method: Use conservative evidence for the actual waste stream.
Ignoring chassis tare changes
Better selection method: Recalculate payload when body, lifter or options change.
Limitations
- A final size requires measured local route data.
- Compaction behavior varies with waste composition and operation.
- Do not approve a size that lacks legal payload, axle or access verification.
Evidence scope and technical basis
Each source is limited to what it can support. This makes the evidence chain readable to buyers, search engines and AI systems without turning a general source into a project claim.
Supports: Controls the project-input, quotation, approval and inspection workflow described in this guide.
Does not establish: It does not replace the signed quotation, approved specification, selected OEM documents or unit-linked project records.
Supports: Provides public checklists and worksheets; the signed project documents remain controlling.
Does not establish: It does not replace the signed quotation, approved specification, selected OEM documents or unit-linked project records.
Supports: Defines the relevant product family and published configuration boundaries. Project-specific ratings require the selected OEM documents.
Does not establish: It does not replace the signed quotation, approved specification, selected OEM documents or unit-linked project records.
Supports: Official U.S. reference distinguishing roll-on/roll-off and hook-lift containers and requiring suitable securement. Destination rules may differ.
Does not establish: It is authority, jurisdiction or subject specific and does not approve the selected vehicle for another destination or project.