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DAVID PARR MEng CEng MICE MSc MAPM

Director

ROSS MCWHA MEng CEng MICE

Design Manager

PIANC

PRESENTATION

SEAFORTH PASSAGE

PORT OF LIVERPOOL

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60 Million tonnes of cargo per annum

16,000 Shipping movements annually

UK’s Second largest port operator

MERSEY PORTS MASTER PLAN - 20 YEAR STRATEGY FOR GROWTH

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LIVERPOOL

ROYAL SEAFORTH CONTAINER TERMINAL

GLADSTONE DOCK

SEAFORTH PASSAGE

SEAFORTH DOCK

Seaforth Docks constructed in early 1970’s

Impounded dock with access from Mersey via Gladstone Lock

ROYAL SEAFORTH DOCKS – LOCATION & HISTORY

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RIVER MERSEY

ROYAL SEAFORTH DOCKS – LOCATION & HISTORY

SEAFORTH DOCK

RSCT

SEAFORTH PASSAGE

GLADSTONE LOCK

GLADSTONE DOCK

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INTRODUCTION

STAGE 1 TENDER

STAGE 2 TENDER

ENABLING WORKS

CONTRACT

FINAL

PRICE

CONSTRUCTION CONTRACT

TENDER PROCESS & PROCUREMENT

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CONTRACT

ASSET

CONDITION

SURVEY

INVESTIGATE

SERVICES AND

STRUCTURES

CHECK

CONDITION OF

EXISTING

SIPHON

GROUND

INVESTIGATION

STAKEHOLDER

CONSULTATION

FURTHER

DESIGN &

VALUE

ENGINEERING

SEAFORTH PASSAGE WIDENING ENABLING CONTRACT

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40m

BACKGROUND –

Port of Liverpool – Royal Seaforth Container Terminal

40m

CONTRACT DETAILS

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BACKGROUND –

Port of Liverpool – Royal Seaforth Container Terminal

20m 40m

CLIENT: PEEL PORTS

CONTRACT: NEC OPTION A

VALUE: £11M

PROGRAMME: NOVEMBER 2013 – AUGUST 2015

CONTRACT DETAILS

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ORGANISATION

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PHASE 1 – SECTOR GATE REMOVAL

PHASE 2 – SIPHON EXTENSION

PHASE 3 – SERVICES U TUBE

PHASE 4 – MAIN COMBI WALL

PHASE 5 – DEMOLITION

KEY PHASES

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PHASE 1 –SECTOR GATE REMOVAL

SECTOR GATE

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PHASE 1 –SECTOR GATE REMOVAL

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18m

30m

25m

PHASE 1 –SECTOR GATE REMOVAL

• TOTAL WEIGHT = 420T

• BURIED IN 11m OF SILT

• SILT REMOVED VIA AIRLIFT AND SILT PUMPS

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Stage 2: Sector Gate Removal

PHASE 1 –SECTOR GATE REMOVAL

• 3D MODEL BUILT FROM RECORD DRAWINGS TO PLAN DEMOLITION

• GATE CUT AND REMOVED IN 6 SECTIONS RANGING FROM 40-160T

• BRONCO OXY CUTTING USED FOR MAJORITY OF CUTS

• FINAL CUTS COMPLETED REMOTELY USING SHAPED CHARGES

• TEMPORARY WORKS INSTALLED TO SECURE GATE

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PHASE 1 –SECTOR GATE REMOVAL

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PHASE 1 –SECTOR GATE REMOVAL

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PHASE 2 – SIPHON EXTENSION

3m DIAMETER SEWER

SIPHON BELOW PASSAGE

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PHASE 2 – SIPHON EXTENSION

20m EXTENSION AND TIE-INS

REQUIRED TO FACILITATE

INSTALLATION OF MAIN WALL

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EXISTING SEAFORTH

PASSAGE SILL FLOOR

= - 6m CD

25

m

de

ep

PHASE 2 – SIPHON EXTENSION

EXISTING 3m DIAMETER SIPHON

NEW RC UPSHAFT

PROPOSED 3m DIAMETER EXTENSION

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PHASE 2 – SIPHON EXTENSION

EXISTING RC DIAPHRAGM WALLS

TEMPORARY DIVERSION CHANNEL

COFFERDAM

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PHASE 2 – SIPHON EXTENSION

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PHASE 2 –SIPHON EXTENSION – LINER PIPE

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PHASE 3 – SERVICES U TUBE

ROUTE OF EXISTING SERVICE

CULVERT AND LINK DUCT

UNDER PASSAGE

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PHASE 3 – SERVICES U TUBE

PROPOSED U TUBE

DIVERSION ROUTE

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PHASE 3 – SERVICES U TUBE

COMPLETED U TUBE

DIVERSION ROUTE

COMPLETION OF DIVERSION PERMITS

INSTALLATION OF MAIN WALL

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63m Straight

Section

11m Western

Vertical Bend

12m Western

Vertical Riser

15m Eastern

Vertical Riser

9.5m Eastern

Horizontal Bend

11m Eastern

Vertical Bend

120m LONG

1020mm DIAMETER

TOTAL WEIGHT = 97.5T

PHASE 3 – SERVICES U TUBE

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SERVICES WITHIN U-TUBE:

EXISTING NETWORK:

• 11kV HV RING

• FIBRE OPTIC/COMMS

• LV AND DOCK LEVELLER

• WATERMAIN

FUTURE PROVISION:

• 33kV HV RING

• ASSOCIATED FIBRE OPTICS AND COMMS

PHASE 3 – SERVICES U TUBE

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PHASE 3 – SERVICES U TUBE

STAGE 1 PRE-FABRICATION ON WEST ALEXANDRA DOCK

WEST ALEXANDRA DOCK

SEAFORTH PASSAGE

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U-Tube Fabrication and Installation Overview PHASE 3 – SERVICES U TUBE

STAGE 2 ROTATION THROUGH 90 DEGREES

Youtube Link: https://www.youtube.com/watch?v=SdDWgSNcN8M

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U-Tube Fabrication and Installation Overview PHASE 3 – SERVICES U TUBE

STAGE 3 U TUBE POSITIONED

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TRENCH EXCAVATED IN MARCH 2014

EXCAVATED EARLY TO UTILISE 200T

BACKHOE DREDGER – CAPABLE OF

EXCAVATING TO THE FULL 19m DEPTH

4000m3 OF MATERIAL REMOVED IN 3 DAYS

SILT FLOWED INTO TRENCH AS HARD

MATERIAL WAS EXCAVATED

PHASE 3 – SERVICES U TUBE

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TRENCH EXCAVATED TO - 8.8m CD

PHASE 3 – SERVICES U TUBE TRENCH EXCAVATED MARCH 2014

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PHASE 3 – SERVICES U TUBE

TRENCH SILTED TO - 6.0m CD

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PHASE 4 – MAIN COMBI WALL

COMBI WALL

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PHASE 4 – MAIN COMBI WALL

ANCHOR WALL

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PHASE 4 – MAIN COMBI WALL

TIE RODS

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PHASE 4 – MAIN COMBI WALL

COPE

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20m

40m

PHASE 5 – DEMOLITION

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PHASE 5 – DEMOLITION

VOLUME TO BE REMOVED 20,000m3

EXISTING QUAY LEVEL + 13m CD

WATER LEVEL + 10m CD

CUT OFF LEVEL - 6.5m CD

COMPLETION SUMMER 2015

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dparr@farrans.com

rmcwha@farrans.com

www.farrans.com