Selection scope and sizing decision
Useful for: Buyers checking whether a proposed crane covers defined delivery lifts before engineering approval
A load chart maps capacity to defined geometry and setup. It is not a single rating and it should not be interpolated or extended beyond the manufacturer method.
For procurement, list each representative load with pickup and placement radius. This creates a traceable coverage check and exposes lifts that need a different crane or site method.
Sizing inputs
Supply these values before a model, body size or working rating is selected:
- 01Exact crane model and configuration
- 02Load including lifting accessories as required by the manufacturer
- 03Pickup and placement radius
- 04Required boom length, height and articulation
- 05Outrigger and setup condition
- 06Manufacturer chart notes, deductions and restrictions
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
Truck-mounted crane load chart interpretation
- 02Quantify sizing inputs
Exact crane model and configuration; Load including lifting accessories as required by the manufacturer
- 03Test the complete vehicle
Chart identity and Working radius must both pass.
- 04Approve the selected rating
Exact manufacturer load chart and revision; Representative lift schedule
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 |
|---|---|---|
| Chart identity | Match model, revision, units and installed options. | A chart from a similar crane is not controlling. |
| Working radius | Use the horizontal radius defined by the manufacturer. | Load distance changes during a lift. |
| Configuration | Select boom, extension and outrigger condition. | Capacity from another setup cannot be transferred. |
| Deductions and limits | Apply hook, attachment and other stated chart rules. | Do not invent or omit deductions. |
Applied calculation
Add every suspended item before reading the chart The chart comparison uses gross lifted load at the actual radius, boom, sector and outrigger condition.
- 01Gross lifted load1,780 kg
1,600 + 180 - 02Chart lookupMust pass
Chart capacity at 6 m and actual setup ≥ 1,780 kg - 03Configuration checkMust pass
Boom, sector, outriggers, level and installed options match chart
Decision: The lift is within the chart only if the exact setup row or diagram permits at least 1,780 kg and all stated conditions are satisfied.
Evidence boundary: Hypothetical values only. A qualified lift plan and the crane manufacturer instructions control actual operation.
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.
- Exact manufacturer load chart and revision
- Representative lift schedule
- Installed crane and outrigger configuration
- Documented chart coverage review and open exceptions
Selection and sizing traps
Using maximum crane tonnage at every radius
Better selection method: Read the exact chart cell or manufacturer method for the condition.
Using boom length as working radius
Better selection method: Follow the chart definitions and lift geometry.
Ignoring attachment or rigging deductions
Better selection method: Apply every stated chart and manual requirement.
Limitations
- This guide is not a lift plan and does not reproduce a manufacturer chart.
- Only the exact approved chart and manual control operation.
- Do not lift when chart identity, radius, configuration, deductions or setup cannot be confirmed.
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 supporting configuration-specific load charts, stability factors, inspection identity and removal of hazardous deficiencies. Local 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.