Serve building lifts with a tower crane selected for load at radius, site geometry and the engineered support arrangement. Compare mast, jib and installation sequence with clearance and service requirements so the proposal describes a complete project configuration rather than a maximum capacity class. Prioritize coverage, chart, structure. Use the checkpoints to build a consistent equipment scope and confirm the intended trial or installation evidence. The official image is a product reference; it does not establish availability or an authorized supplier relationship. Submit OEM/ODM changes for application-specific feasibility review.
Serve building lifts with a tower crane selected for load at radius, site geometry and the engineered support arrangement. Compare mast, jib and installation sequence with clearance and service requirements so the proposal describes a complete project configuration rather than a maximum capacity class.
Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
Define coverage and critical lifts
Provide the site plan, building elevations and representative loads with rigging. Identify pick-up, storage and placement positions and required hook heights. A tower crane needs to cover the actual work area while avoiding constraints around neighboring property and other operations. Maximum rated load does not establish capacity at the jib tip. Ask for assessment of the critical lift cases using the exact jib and configuration proposed rather than a generic crane-class recommendation.
Choose jib length and load-chart conditions
Jib length, reeving and other configuration details affect the available capacity at each radius. Check the chart and operating information for the delivered arrangement. The Liebherr 125 EC-B 6 reference is a flat-top tower-crane example; its family image should not be used to infer all jib, mast or control options in a quotation. Include hook blocks and lifting accessories and distinguish standard components from equipment needed for particular project phases.
Engineer foundation, mast and ties
Tower configuration and supporting design must be assessed together. Provide ground or structural information, possible tie positions and the intended height sequence. Mast sections, base arrangement and anchorage need to follow a documented compatible design; similar-looking sections are not automatically interchangeable. Identify who supplies reactions, designs the foundation and approves connections to the building. A crane-only price can omit major civil and tie work essential to the planned installation.
| Selection issue | Information to specify |
|---|---|
| Coverage | Site positions, load with rigging and hook-height sequence. |
| Chart | Jib, radius, reeving and exact configuration. |
| Structure | Compatible mast, base, foundation and building ties. |
| Clearance | Neighbors, other cranes, exposure and out-of-service planning. |
| Installation | Transport, erection, climbing and later dismantling access. |
| Handover | Power, inspection records, charts and project-specific support. |
Resolve clearance, wind and nearby cranes
The site design must account for the full crane arrangement, neighboring structures and any other cranes. Counterjib, slewing space and required out-of-service conditions need appropriate planning using the specific equipment instructions. Wind exposure and the building sequence affect the installation assessment. Do not assume a shorter working load path removes clearance requirements elsewhere. Assign responsibilities for coordination and any selected zoning or collision-management systems rather than treat optional software as a complete site-control plan.
Plan erection and height changes
Delivery, erection and dismantling require access, staging and suitable auxiliary lifting resources. If climbing or later height changes are proposed, identify the exact equipment, process and competent responsibilities. Component dimensions and masses influence the transport and assembly plan. Reserve space for stored sections and later dismantling, which can be constrained as the building advances. The construction schedule should establish when each configuration is needed and how changes are approved and documented.
Define power, inspection and operating support
Obtain the supply requirements for the offered drives and controls and coordinate cable and site-distribution arrangements. Handover should include configuration charts, component identification and required installation or inspection records. Training and specialist service must support the agreed project arrangement. Clarify control-system diagnostics and parts access. For used equipment, inspect the actual crane components and history rather than assume a valid model brochure establishes their condition or compatibility within an assembled tower.
Bound OEM/ODM to engineered site interfaces
Identification, selected controls integration and project interfaces can be submitted for review. Changes to mast, jib, drives, controls or protective functions need engineering and supporting evidence. Provide lift cases, site clearances and the height sequence with the brief. A modified package requires its own configuration documentation and approval boundaries. Reference-brand images do not establish private-label rights or allow an unassessed mast or foundation arrangement to inherit the pictured crane’s load claims.
What should your tower crane RFQ include?
- Coverage: Site positions, load with rigging and hook-height sequence.
- Chart: Jib, radius, reeving and exact configuration.
- Structure: Compatible mast, base, foundation and building ties.
- Clearance: Neighbors, other cranes, exposure and out-of-service planning.
- Installation: Transport, erection, climbing and later dismantling access.
- Handover: Power, inspection records, charts and project-specific support.
- Destination, site conditions and delivery access
- Installation boundary, utilities and connection drawings
- Acceptance procedure, documentation and training scope
- OEM/ODM changes: interface, material, branding or new design; written engineering feasibility required
Need OEM / ODM customization?
Submit branding, packaging, configuration or engineering requirements for this equipment. Include the target market, initial and annual quantities, required changes and acceptance criteria.
Customization feasibility, permitted branding, development responsibilities, minimum quantity, cost and lead time are reviewed for the proposed supplier and configuration before a quotation is confirmed.
Frequently asked questions
Does maximum tower-crane capacity apply at the jib tip?
No such assumption should be made. Capacity varies with radius and configuration. Provide the actual loads including rigging and placement positions and assess the relevant chart for the proposed jib and reeving. A crane-class label alone cannot settle the critical lift requirement.
Can mast sections from similar cranes be mixed?
Compatibility must be established through the documented design. Similar dimensions or connections do not prove equivalent structural behavior or permitted combinations. Identify the exact mast and base components in the offer and maintain traceability, especially when expanding or purchasing used tower-crane equipment.
What foundation information is needed?
Provide ground or supporting-structure information and the intended tower arrangement. The crane reactions must be matched to an engineered foundation and any building ties. Allocate responsibility for design, anchors and approval so the equipment quote is not mistaken for a complete installed tower system.
Why must nearby cranes and out-of-service conditions be planned?
The whole crane envelope and required conditions can affect neighboring structures and operations beyond the immediate load path. Use the specific equipment information and a coordinated site design. Optional zoning or collision-management features should support defined responsibilities rather than be treated as an automatic solution.
Which erection and climbing items belong in the scope?
Identify delivery, staging, auxiliary lifting resources, compatible climbing equipment where required and the approved height sequence. Include dismantling access as construction progresses. Component transport and assembly obligations can materially change the project package even when two cranes have suitable lifting charts.
Can a tower crane be customized for a construction project?
Selected interfaces and integration can be reviewed, while structural, drive or protective changes require engineering and evidence. Submit lift, height and site requirements and retain the approved configuration records. A customized or branded package cannot establish suitability of an unassessed mast, jib or support arrangement.
Reference information
- Liebherr 125 EC-B 6 official product reference
- Liebherr 125 EC-B 6 technical data
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.