Sumburgh East Runway Remedials

Sumburgh East Runway Remedials

Contract Value: £3,500,000-
Consulting Engineer: RPS
Engineer's Representative: Brian Dalton (028 9066 7914)
Client: McLaughlin & Harvey
Client's Representative: John Mariner (028 9034 2777)
Works Completion Date: July 2015

Scope of the Works:

Ashleigh Contracts were appointed as the specialist marine contractor for this project to undertake the overlaying of the existing rock Revetment profiles and construct a new X Bloc Revetment with the detailed works to comprised:-

-          Offloading and stockpiling up to 40,000T of Rock Armour imported from Norway by barge – with the armour ranging in size from 3T up to a maximum of 27T individual stone weights.

-          Underwater rockbreaking of approx. 1,800m3 to form a Toe trench up to 2m deep around the perimeter of the new Revetment and to levels as deep as -12.8m CD.

-          Placement of 118No 14T precast concrete X Base Units into the Toe trench and approx. 1,400No 14T X Bloc Units on the lower slopes of the new Revetment.

-          Construction of a rock armoured Toe Mound to secure the base of the X Bloc Revetment by placement of 10T to 12T Armour stones out to a radius of up to 23m from the machine.

-          Placement of 14T X Blocs to the final crest height of +6m CD and placement of crest armour stones in the range 18T to 27T.

-          Miscellaneous site demolition and earthworks to provide for the upgrading of perimeter filling, secant piling and pilecap construction works.

Areas of Expertise