PROJECT:   Bristol 11kV Diversion
CLIENT:       SSE Enterprise Rail
End Client:   Network Rail
End Date:    January 2020

SCOPE OF WORKS

Civils design submission for the installation of a new substation and associated cable routes at Bristol East Junction.  Design of new substation foundation and 11kV cable route to integrate with future proposed works.

DELIVERABLES

 - Cable route options report

 - Detailed design submission drawings

 - Submission of 3D model files

 - Specifications and calculations

 - Designers risk assessment

 - Design decision log

 - Form 001, 002 and 003 submission package and AFCs

 - As-built drawings

 - Form 001, 002 and 003 submission package for temporary works lift

 - Form 002 and 003 submission for integration of substation GRP housing

KEY ACHIEVEMENTS

We were able to react quickly to provide site support during the construction phase to deal with emerging changes.

PROJECT:        Mosspark PSP
CLIENT:            SVM-Glasgow
END CLIENT:    Network Rail
END DATE:       January 2020

SCOPE OF WORKS

To undertake a topographical survey of the proposed site for a new principal supply point (PSP) nearby Mosspark platform.

Production of a civils design submission for the provision of a new PSP compound and equipment foundations within.

DELIVERABLES

 - Site topographical survey

 - Options, outline and detailed design

 - Drawings, specifications and calculations

 - Design decision log

 - Designers risk assessment

 - Form 001, 002 and 003 submission package and AFCs

 - As-built records and drawings


PROJECT:        L2C Electrification - Pile Design Review
CLIENT:            Pipe and Piling Supplies Ltd
END CLIENT:   Carillion Pwerlines for Network Rail
END DATE:       April 2018

SCOPE OF WORKS

To provide an independent review of the pile design for unpainted 610 diameter piles and to determine a likely maximum overturning moment that the pile could withstand during its life.  This review needed to consider the following:

 - Design life of the piles

 - Corrosion rates of the pile

 - Ground strata model

 - Pile loading

DELIVERABLES

 - We proposed a two-stage review:

          - Initial phase was a review of the key parameter to determine opportunity for a different approach

          - Second phase was to conduct a full calculation to ascertain the maximum applied moment to the pile head

 - Produce a report

 - Attend a meeting to discuss the results

KEY ACHIEVEMENTS

Despite the unknowns and generic approach to the review we were able to demonstrate sufficient confidence in the results to avoid additional costs in developing phase two of the scope.

KEY CHALLENGES

The review was generic and not site specific, therefore, there were considerable unknowns in terms of ground conditions. We developed an approach using statistical analysis and confidence factors to model the likely scenarios which may appear. This allowed a review of the key paraments and sensitivity with sufficient confidence to enable a judgement to be taken to curtail the scope – leading to efficiencies in cost.


PROJECT:    GWEP Pile Grillage Fabrication Drawings

CLIENT:        Pipe and Piling Supplies Ltd

END DATE:   March 2018

SCOPE OF WORKS

To provide a set of fabrication drawings from the approved detailed design drawings which included:

 - Interpret setting out information from design to fabrication

 - Radius and edge details

 - All material sizing details and dimensions to allow fabrication

 - All weld details

 - Interpret the site survey information to provide additional fabrication dimensions

DELIVERABLES

Fabrication drawings (6No. at A1)

KEY ACHIEVEMENTS

Working to tight deadlines to meet fabrication and site installation.

KEY CHALLENGES

Site survey information was required to complete the dimensioning of the grillages and this information was being collected in parallel with our drawing work.  We prepared a schedule to contain the survey information such that main drawings could continue and draw reference to the schedule for key dimensions.  This avoided the need to alter and re-issue the main drawings on receipt of new survey information.


PROJECT:       L2C PILE CAP DEVELOPMENT
CLIENT:           PIPE AND PILING SUPPLIES LTD
END CLIENT:  CARILLION POWERLINES FOR NETWORK RAIL
END DATE:     JAN 2018

SCOPE OF WORKS
To support Pipe and Piling Supplies Ltd with the development and approval of a steel pile cap to replace the BOSS connection on driven steel piles.  The scope included the development of a cap to take Series 2 OLE equipment which would normally be founded on concrete, this enabling more equipment to be founded on 610 dia piles and reduce the concrete foundation works.  There were 7 mast baseplate types to accommodate.

DELIVERABLES

 - Eurocode compliant steel design with 3D stress modelling to support hand calculations
 - Provision of drawings and specification
 - Network Rail civils technical approval F001/F002/F003 including DRN close out
 - Overhead Line Allocation drawings
 - AFC drawings for fabrication

KEY ACHIEVEMENTS

Development of installation methodology and inclusion of tolerances to give flexibility on site whilst retaining the serviceability requirements of the installed OLE masts.  This was achieved through careful review of the bolt tolerances and restriction of the rotational ability of the overall cap.

Use of a design decision log to capture key development decisions regarding connection to unpainted piles, corrosion limits, galvanising life, overall design life, etc.

KEY CHALLENGES

The client asked if there could be a common pile to cap fixing so that pile installation could proceed without the need to reference which mast would be fitted.  This required a common pile cap sleeve and needed careful assessment of all loading conditions to give the ‘worst case’ for design.  3D stress modelling supported by hand calculations in Excel enabled this to be achieved and all 7 caps now sit on a common pile connection, thus driving efficiency in the fabrication and installation process.


PROJECT:        GWEP Pile Cap Development
CLIENT:            Pipe and Piling Supplies Ltd
END CLIENT:   Network Rail
END DATE:      November 2017

SCOPE OF WORKS

To support Pipe and Piling Supplies Ltd with the development and approval of a steel pile cap to replace the BOSS connection on driven steel piles. The scope included:

 - 610 4 BOSS and 6 BOSS

 - 762 4 BOSS and 6 BOSS

 - 457-610 Adaptor Cap

 - 457-762 Adaptor Cap

 - 610-762 Adaptor Cap

DELIVERABLES

 - Eurocode compliant steel design with 3D stress modelling to support hand calculations

 - Provision of drawings and specification

 - Network Rail civils technical approval F001/F002/F003 including DRN close out

 - AFC drawings for fabrication

KEY ACHIEVEMENTS

The development of installation methodology and inclusion of tolerances to give flexibility on site whilst retaining the serviceability requirements of the installed OLE masts.  This was achieved through careful review of the bolt tolerances and restriction of the rotational ability of the overall cap.

KEY CHALLENGES

Determining the load path of the vertical loads from the mast holding down bolts proved complex.  The 3D stress modelling gave a visual representation of the stress path through the different elements and aided the placement of additional material to accommodate the stress levels.


PROJECT:        Private Siding Track Inspection
CLIENT:            Robert Skene Consulting Ltd
END CLIENT:   Hope Construction Materials (Breedon)
END DATE:      March 2017

SCOPE OF WORKS

To visit site and conduct a track inspection at a number of depot locations to provide a report covering the following:

 - Defects found requiring immediate attention

 - Schedule of anticipated works required to achieve operational requirements and timescales

 - Anticipated cost schedule for all works

DELIVERABLES

Key deliverable was a report for each site to include:

 - Defects noted

 - Maintenance requirements over anticipated life

 - Commentary on site generally

 - Photographs

 - Works/cost schedule

KEY ACHIEVEMENTS

Working with Depot staff and NR to attain site access and safety controls for inspections.

KEY CHALLENGES

Large geographic area required careful planning – resource allocation, travel times and daylight hours on site.