Ullapool Harbour

PROJECT DESCRIPTION

A 35m extension to the existing ferry pier and upgrading of fendering to suit the new ferry MV Loch Seaforth. The main aim of the project was to eliminate disruption to ferry services during construction. The chosen solution was a 3500t concrete caisson constructed in a dry dock, floated into position with fenders attached. No ferry services were disrupted during the 8 month construction period. The works included dredging, formation of an underwater rock bund, underwater concrete foundation, reinforced concrete caisson construction, fendering and scour protection.

Client – Ullapool Harbour Trustees

Completion – 2014

Value – £7m

AREAS OF RESPONSIBILITY

Preliminary design development; detailed design of two options for tender, concrete caisson and traditional combi piled pier; fendering; dredging and scour protection; site supervision and NEC project management during construction.

PRINCIPAL ELEMENTS

  • Concrete caisson 3500t;
  • Reinforcement 434t;
  • Rock fill 3000m³
  • Dredging 500m³
  • Scour mats 900m²
  • Foundation rock bund 3000m³
  • Foundation concrete 500m³
  • Fendering 15no. parallel motion units to west face and roundhead, steel pile and rubber cell fenders to east face

KEY FEATURES

The caisson design eliminated ferry disruption which was of huge economic benefit to local communities.

CONTRACTORS

Project Manager – Wallace Stone

Main Contractor – RJ McLeod (Contractors) Ltd

Fendering – Trelleborg

Client Advisor – Caledonian Maritime Assets Ltd (CMAL)

 

View a time lapse video of this project here