Place the crane around the pickup and delivery positions
Moving the same nominal crane along the frame changes both its working geometry and the truck’s load distribution. Begin with where material will be picked up and placed, which sides need access, and how cargo will be carried between lifts.
Behind-cab mounting uses forward body space. Rear mounting changes overhang and axle loading. Neither location brings an automatic capacity advantage: the installed chart, subframe, support arrangement and transport layout determine what the proposal can do.
Review cargo access and axle reactions with the crane installation
Keep usable deck length, restraints and service access visible on the drawing. Gross mass alone does not settle axle reactions, and boom reach alone does not establish chart coverage. The support system must follow the approved crane and chassis design.
Scroll horizontally to view all columns.
| Decision | What to establish | Condition or limit |
|---|---|---|
| Working geometry | Place the crane to serve the required pickup and placement sectors. | Boom reach alone does not establish chart capacity. |
| Transport layout | Preserve usable cargo space, restraint points and service access. | Mounting position can remove usable body length or create rear overhang. |
| Axle reactions | Calculate transport and relevant setup reactions for the completed layout. | Gross vehicle mass compliance does not prove every axle condition. |
| Support system | Integrate subframe and outriggers to the approved crane and chassis design. | Mounting brackets cannot be improvised from a similar project. |
Request both layouts against the same delivery cases
Compare installation drawings and applicable charts with the load and placement schedule. Ask for transport and relevant setup reactions, including the outrigger arrangement. Similar-project photographs cannot justify improvised mounting brackets or an unapproved installation.
Information to prepare for this review
- Load mass, dimensions and pickup locations
- Required placement radius and working sectors
- Cargo-body length and loading method
- Selected crane model and mounting instructions
- Chassis wheelbase, axle ratings and frame limits
- Outrigger, subframe and service-access requirements
Records to request and keep
- Mission lift and cargo schedule
- Controlled general-arrangement and subframe drawing
- Completed-vehicle mass and axle calculation
- Crane installation, function and commissioning records
Common mistakes and what to check instead
- Choosing position from photos: Use the required working sectors and completed layout.
- Checking only transport axle loads: Review the setup and support conditions required by qualified design.
- Ignoring service and cargo access: Show maintenance clearances and the real loading workflow on the drawing.
Scope of this guide
This comparison does not design a subframe or approve a crane installation.
Qualified engineering and manufacturer requirements control the final mounting.
Do not operate without an approved installation, applicable load chart, stable support and verified safety systems.
Sources and applicability
Controls the project-input, quotation, approval and inspection workflow described in this guide.
Provides public checklists and worksheets; the signed project documents remain controlling.
Defines the relevant product family and published configuration boundaries. Project-specific ratings require the selected OEM documents.
Official U.S. reference supporting configuration-specific load charts, stability factors, inspection identity and removal of hazardous deficiencies. Local rules may differ.