RIDER OF THE STORMS

A number of precautions are being taken to ensure the durability of the new Dornie bridge across Loch Long. The 260m long bridge is on the busy A87 tourist route 18km before the Kyle of Lochalsh and will replace the existing 50 year old bridge which is suffering from chloride attack. The bridge has to accommodate a 5m tidal range, seven knot currents, 130km/h winds and high rainfall. The largely pre-stressed concrete deck consists of 26m spans above in situ reinforced concrete piers founded on steel H-pipes and formed within nine separate cofferdams. The bridge is being built from a temporary bridge alongside, built to take NCK Eiger 110t crawler cranes and allowing access to all 10 spans. The design of the permanent bridge aims to eliminate expansion joints and a novel in situ crosshead on the same level as the deck head and integral with them has been developed. Reinforcements are a vivid green, being coated with a fusion bonded sprayed epoxy coating to help counteract carbonation. Tight control is kept over the high strength air entrained concrete at a nearby quality control centre set up by the contractor. Exposed surfaces of the bridge will be treated with the water repellent, silane. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03077683
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Hayward, D
• Publication Date: 1990-7-19

Language

• English

Media Info

• Pagination: p. 28-30
• Serial:
  • NEW CIVIL ENGINEER
  • Issue Number: 905
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0307-7683

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Carbonation; Coatings; Durability; Epoxides; High strength concrete; Material reinforcement; Prestressed concrete; Prevention; Quality control; Reinforced concrete; Silane; Structural design; Waterproofing; Weather
• Geographic Terms: United Kingdom
• Old TRIS Terms: Epoxy
• ITRD Terms: 3455: Bridge; 7312: Carbonate; 3612: Coating; 9011: Design (overall design); 5910: Durability; 7468: Epoxy resin; 4796: Prestressed concrete; 9149: Prevention; 9063: Quality; 4794: Reinforced concrete; 3471: Reinforcement (in mater); 8119: United Kingdom; 3375: Waterproofing; 2545: Weather
• Subject Areas: Bridges and other structures; Construction; Highways; Security and Emergencies;

Filing Info

• Accession Number: 00617395
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Nov 30 1991 12:00AM