Davit Arm Design for Safe Access on Mining & Heavy Machinery

Engineering Fall Protection Where Standard Access Systems Don’t Exist

Mining and heavy machinery are rarely designed with easy or safe maintenance access as the top priority. Many machines are large, elevated, and complex, with critical service points located several metres above ground level.

When tradespeople are required to work at height on these machines, the risk of a fall becomes a serious safety concern.

While safety harnesses are commonly used to reduce this risk, a harness is only effective if it can be connected to a properly engineered anchorage point. That’s where davit arms and certified mounting points come in—and where Trang provides specialist engineering support.

Why Davit Arms Are Needed on Mining Equipment

On many mine sites, maintenance tasks involve:

• Accessing elevated service platforms

• Working over open voids or uneven ground

• Servicing components not reachable from fixed walkways

• Temporary or non-routine maintenance activities

In these situations:

• Guardrails may not be practical

• Fixed anchor points may not exist

• Standard access systems may not suit the machine geometry

A davit arm system allows a worker to remain securely connected to a fall-arrest or work-positioning system while safely accessing elevated areas of the machine.

What Is a Davit Arm?

A davit arm is a structural device designed to:

• Provide a rated anchorage point for fall-arrest or restraint systems

• Allow workers to safely access elevated or awkward locations

• Maintain required clearances for harness and lanyard systems

Davit arms can be:

• Commercially manufactured systems, installed to manufacturer requirements

• Custom-engineered solutions, designed to suit a specific machine and task

Trang works across both approaches.

Trang’s Davit Arm Engineering Services

Trang provides engineering design and verification for davit arm systems used on mining and heavy equipment.

Our scope typically includes:

1. Assessment of the Maintenance Task

• Where the work is performed

• Required reach and access envelope

• Worker positioning and movement

• Fall-arrest vs restraint requirements

2. Machine & Structure Review

• Machine geometry and layout

• Structural capacity of mounting locations

• Load paths into the machine frame or structure

• Interaction with existing guards, handrails, or access systems

3. Davit Arm & Anchorage Design

Trang can:

• Design machine-mounted anchor points compatible with commercially available davit arms

• Engineer custom davit arms where off-the-shelf solutions are unsuitable

• Design base plates, brackets, and reinforcement as required

4. Engineering Verification

• Structural analysis of mounting points

• Verification of applied loads and safety factors

• Documentation suitable for mine site safety systems and audits

Commercial vs Custom Davit Arm Solutions

Commercial Davit Arms

Commercial davit arms are often preferred where:

• A suitable mounting location exists

• Manufacturer installation requirements can be met

• Standard configurations provide adequate reach and capacity

Trang assists by ensuring the machine mounting point is properly engineered and fit for purpose.

Custom Davit Arms

Custom solutions may be required when:

• Machine geometry is non-standard

• Access is constrained or highly specific

• Load paths require bespoke structural design

• Multiple machines or configurations are involved

In these cases, Trang can design the entire davit arm system, including:

• Arm geometry

• Mounting interfaces

• Structural capacity checks

• Integration with existing access systems

Why Engineering Matters for Davit Arm Systems

Davit arms are safety-critical components. Poorly designed or inadequately mounted systems can:

• Overload machine structures

• Introduce new failure modes

• Provide a false sense of safety

• Expose operators and owners to significant risk

An engineered solution ensures:

• Loads are correctly understood and transferred

• The machine structure is not compromised

• The system performs as intended during a fall-arrest event

• Documentation exists to support compliance and site approvals

Typical Applications

Trang commonly designs davit arm systems for:

• Large mining equipment maintenance

• Fixed and mobile plant

• Processing and materials handling machinery

• Equipment where OEM access provisions are limited or non-existent

These systems are often required for:

• Shutdown maintenance

• Non-routine servicing

• Commissioning or modification works

• Contractor access on mine sites

Independent Engineering for Mine Site Safety

OEM designs do not always account for every maintenance scenario encountered on a mine site. When additional access or fall-protection systems are required, independent engineering input becomes essential.

Trang provides:

• Practical, site-focused solutions

• Engineering documentation aligned with mine safety requirements

• Clear identification of risks and limitations

• Confidence that worker safety has been properly considered

Need a Davit Arm or Anchorage System Designed?

If your operation requires safe access to elevated areas on mining or heavy machinery, Trang can assist with davit arm design, anchorage verification, and machine-mounted access solutions.

Contact Trang to discuss your equipment, access challenges, and engineering requirements.