Repeated Load Cycles
Structures working continuously under changing loads can develop fatigue cracking around high-stress areas, transitions and welded joints.
Structural Repairs
Structural Damage. Engineered Back to Strength.
CBU Engineering repairs cracked, fatigued, deformed and damaged heavy structures across mining, industrial and general engineering applications — from equipment frames and booms to buckets, chassis and fabricated assemblies.
Crack Repair
Fatigue Damage
Section Replacement
Reinforcement
Frames & Chassis
Structural restoration
Booms & Structures
High-load repair
Buckets & Attachments
Heavy rebuilds
Mining & Industrial
Workshop + field
Understanding Structural Failure
Structural Failure Is Rarely Just a Crack.
A visible crack can be the final symptom of repeated loading, fatigue, wear, deformation or stress elsewhere in the structure. Effective structural repair starts by understanding what has failed — and what the surrounding structure has been subjected to.
Bent or Distorted Structures
Impact, overload and severe operating conditions can move structural sections out of alignment and transfer loads into areas they were not intended to carry.
Loss of Material
Abrasion and repeated contact can reduce material thickness, weaken load-bearing sections and contribute to cracking or failure around the affected area.
Localised Structural Failure
Failed welds, torn plate, damaged mounting areas and fractured sections may require more than welding alone to restore the integrity of the structure.
The Repair Principle
Repair the structure — not only the visible damage.
Depending on the failure, the correct repair may involve removing compromised material, replacing structural sections, restoring alignment, repairing cracks and introducing reinforcement where appropriate. The objective is to return strength and function to the affected structure rather than simply conceal the symptom.
Structures We Repair
From Localised Damage to Major Structural Rebuilds.
CBU Engineering repairs heavy structures across mining, industrial and general engineering applications. The scope can range from a damaged section or recurring crack to extensive structural restoration and rebuild work.
01 / BOOMS & HEAVY STRUCTURES
High-Load Structural Components
Repair and restoration of large structural components subjected to repeated loading, fatigue, impact and demanding operating conditions.
02 / FRAMES & STRUCTURES
Frames & Fabricated Structures
Structural sections, fabricated assemblies and load-bearing steelwork.
03 / BUCKETS & ATTACHMENTS
Buckets & Heavy Attachments
Repair of cracked, worn, distorted and damaged working attachments.
04 / HEAVY ASSEMBLIES
Complex Structural Assemblies
Major fabricated components requiring coordinated repair, replacement sections and reinforcement.
Not every structural repair fits neatly into a category.
CBU also undertakes structural repair and rebuild work on custom machinery, industrial equipment, steel structures and fabricated components where heavy engineering capability is required.
Structural Repair Process
From Failure Assessment to Structural Restoration.
Structural repair is a sequence, not a single weld. The affected area must be understood, prepared and restored around the condition of the structure and the loads it is expected to carry when it returns to service.
Inspect the Failure
Cracking, deformation, wear and surrounding structural condition are assessed to establish the extent of the affected area and determine the repair scope.
Expose & Prepare
The repair area is opened and prepared so damaged, fatigued or compromised material can be identified rather than hidden beneath the finished repair.
Restore Geometry
Where impact or loading has distorted the structure, alignment and geometry are addressed before the final structural repair is completed.
Repair or Replace Sections
Cracks are repaired and severely damaged or worn sections can be removed and replaced where restoring the existing material alone is not the appropriate solution.
Reinforce Where Required
Reinforcement can be incorporated where the repair, application and surrounding structure justify additional support in high-load or high-wear areas.
Finish & Return to Service
The completed structure is finished and checked as part of preparing the repaired component, assembly or machine for its return to operation.
The repair method follows the structure and the failure.
Depending on the job, structural work can be combined with fabrication, machining and wear solutions so the surrounding repair is completed as one coordinated scope.
Structural Intervention
Repair. Reinforce. Rebuild.
Structural damage exists on a spectrum. Some failures require a targeted local repair. Others require reinforcement or the removal and reconstruction of substantial sections. CBU matches the scope of work to the condition of the structure.
Repair
Where damage is confined and the surrounding structure remains serviceable, the repair can focus directly on the affected area.
- Structural crack repair
- Failed weld restoration
- Localised plate damage
- Damaged mounting areas
Reinforce
Where operating loads, recurring failure or material condition justify it, the repaired area can require additional structural support.
- High-stress areas
- Reinforcement plates
- Stiffeners and supports
- Recurring failure areas
Rebuild
Severe wear, deformation or structural damage may make repair of the existing section impractical, requiring damaged material to be removed and reconstructed.
- Section replacement
- Major plate replacement
- Structural reconstruction
- Extensive equipment rebuilds
The extent of the damage determines the extent of the repair.
CBU can move from localised structural work through to major fabrication and reconstruction without forcing fundamentally different repair requirements into the same solution.
Mining Equipment
Heavy Machinery
Industrial Structures
Fabricated Assemblies
General Engineering
WORKSHOP + FIELD CAPABILITY
Repair in the Workshop.
Support Where It Stands.
Structural repair does not always happen in the same environment. Components and machinery can be brought into CBU Engineering's workshop where practical, while equipment and structures that cannot easily be moved can be supported on-site.
01
WORKSHOP
CONTROLLED REPAIR ENVIRONMENT
Workshop Repair
Where components can be removed or machinery can be transported, CBU's workshop provides the space and heavy-engineering capability required for more extensive structural intervention.
- Removed components and assemblies
- Major structural repair work
- Section replacement and reinforcement
- Fabrication and machining support where required
02
FIELD
ON-SITE STRUCTURAL SUPPORT
Field Structural Support
Large equipment and fixed structures cannot always be moved. CBU can support structural repair work on mining, industrial and operational sites where the repair must be carried out around the asset itself.
- Heavy equipment in the field
- Fixed or difficult-to-move structures
- Mining and industrial site support
- Structural repair where removal is impractical
ONE CAPABILITY.
TWO ENVIRONMENTS.
TWO ENVIRONMENTS.
The repair location follows the equipment.
Workshop when practical. Field support when the structure needs
to remain where it operates.
STRUCTURAL REPAIRS
Structural Damage Should Not Become Structural Failure.
From localised cracking and fatigue damage to major section replacement, reinforcement and structural rebuilds, CBU Engineering can assess the repair requirement and determine the most practical route back to service.
01
Assess
Understand the damage
02
Repair
Restore the structure
03
Reinforce
Strength where required
04
Rebuild
Major structural work