Understanding OHL Interfaces
The structure has to connect correctly with the works around it.
Completing an OHL structure can involve more than the tower or pole itself. Earthing, steelwork, access arrangements, sealing end platforms, cable ladders, downleads, droppers, signage and protective components may all need to be installed or coordinated before the structure is ready for the next project activity.
AI Engineering carries out the relevant interface works against the approved project information, RAMS and client requirements applicable to the agreed construction scope.
How Interface Works Progress
From structural completion to a ready and checked interface.
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01
Review the Interface Requirements
Review the approved drawings, structure arrangement, earthing requirements, steelwork, platform or ladder information and other project-specific interface details.
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02
Prepare the Structure
Confirm the structure and associated working area are ready for the interface activities included within the agreed scope.
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03
Install Earthing & Associated Steelwork
Complete the required structure earthing and associated steelwork components in accordance with the approved information.
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04
Complete Platforms & Ladder Interfaces
Install sealing end platform, cable ladder, guards or associated components where these form part of AI Engineering's project scope.
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05
Complete Connections & Protective Items
Complete relevant downleads, droppers, signage, cable guards, ACD or other associated construction items where required.
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06
Check & Hand Over
Carry out final construction checks and prepare the relevant completion or handover records for the interface works.
Practical Interface Capabilities
Construction details that complete the OHL structure and its interfaces.
Structure Earthing
Installation and completion of structure earthing components where included within the approved construction scope.
Below-Ground Earthing
Below-ground earthing activities associated with pole or structure installations where these form part of the project requirements.
Downleads & Droppers
Installation of downleads, droppers and associated connection arrangements where included within the approved OHL construction works.
Sealing End Platforms
Assembly and installation of sealing end platform components and associated steelwork where included within the agreed scope.
Cable Ladder Interfaces
Installation of cable ladder components, guards, support steelwork and associated protective items required before or after cable installation as defined by the project sequence.
Signage & Protective Components
Installation of project-required signage, anti-climbing devices, cable guards and associated completion items where included within the construction scope.
Coordinating the Interface
Each interface has to be completed in the correct project sequence.
Approved Information
Interface activities are completed against the approved drawings, RAMS and project requirements applicable to the works.
Structure Readiness
The structure and relevant steelwork need to be ready before platform, ladder, earthing or associated interface works proceed.
Earthing Continuity
Earthing components are installed and completed as required by the approved project arrangement.
Other Contractors
Where cable installation, termination or other specialist works are by others, AI Engineering coordinates its own interface activities around that project sequence.
Protective Components
Cable guards, ACD steelwork, signage and associated protective items are installed where required within the agreed scope.
Final Checks
Completed interface components are checked before handover and before subsequent project activities proceed where applicable.
Simple Process Flow
How does an OHL interface move from approved information to completion?
- Approved Project Information
- Structure / Work Area Ready
- Earthing & Steelwork
- Platform / Ladder Interface Works
- Downleads / Droppers / Protective Items
- Coordination with Follow-On Works
- Final Checks & Handover
Sealing End Platform & Cable Ladder Interfaces
Preparing the physical interface for the cable works that follow.
Sealing end platform and cable ladder works can form the physical interface between the OHL structure and the cable installation carried out later in the project sequence.
AI Engineering supports the platform, ladder, associated steelwork, guards, protective components and completion checks where these items are included within the agreed scope.
- 01Platform and support steelwork
- 02Cable ladder installation
- 03Ladder bases and associated finishing works
- 04Cable ladder guards
- 05ACD steelwork and protective components
- 06Final checks before handover
Cable installation and termination may be carried out by others depending on the project scope.
Earthing & Completion Items
Small components can be essential to completing the structure correctly.
Structure completion can include earthing connections, signage, anti-climbing components, cable guards and other project-specific items that need to be installed before the structure is considered complete within the agreed construction scope.
- Structure earthing
- Below-ground earthing where required
- Safety and identification signage
- Anti-climbing devices
- Cable guards
- Final completion checks
What AI Engineering Does
Practical interface construction within the agreed project scope.
AI Engineering works from the approved project information and construction methodology to complete the earthing, structural interfaces, platform, ladder, downlead, protective and completion activities assigned within the project scope.
- Earthing installation activities
- Platform and associated steelwork
- Cable ladder interface works
- Downleads and droppers where included
- Signage and protective components
- Final construction checks and records
Where It Fits in OHL Construction
Completing the link between the OHL structure and the wider project infrastructure.
Earthing and interface works typically follow the main structure construction and connect that structure with the activities that come next, whether those involve conductors, cable systems, sealing ends or other project-specific infrastructure.
The exact division of work depends on the approved project scope and the responsibilities assigned to each contractor.
Project Outputs
Interface records that support completion and handover.
Exact records and outputs depend on the agreed project scope, client requirements and interface activities being undertaken.
Construction RAMS
Task-specific working arrangements and risk controls applicable to the interface activities being undertaken.
Earthing Records
Relevant construction records associated with installed structure or below-ground earthing where required.
Platform / Ladder Records
Relevant records associated with sealing end platform, cable ladder or related steelwork installation where included within the scope.
Interface Check Records
Construction checks associated with downleads, droppers, guards, signage or other project-specific interface components.
Completion Records
Project-specific records confirming completion of the assigned interface works.
Handover Information
Relevant construction and as-built information prepared in the format required by the project.