Fences

Tender description

The following is provided in good faith and is intended only as a preliminary background explanation to the Translink Group's requirement it does not purport to be all inclusive. Translink wish to employ the services of a single contractor to provide Stock Proof Fencing is for the provision of a single Contractor to support Translink in the Network Lineside Fencing Programme. These works will invariably be located in areas associated with rail, transport, infrastructure and consequently will be in safety critical infrastructure environments. The scope is to include for the removal and disposal of existing fence and fence posts where necessary such as post and wire fence, chain-link fence, timber sleepers and the breaking up, removal and disposal of existing concrete bases and backfilling as required. Existing vegetation preventing the new fence from being installed is to be removed and disposed of. The NI Railways network covers approximately 300 route miles. This is broken into the following railway lines: Border — Belfast Belfast — Bangor Belfast — Derry Belfast — Larne Coleraine — Portrush Lisburn — Antrim. 2.3. Specifications: Standard stock proof fencing should conform to BS 1722-2:2006 and should consist of from the bottom up: — 1 strand of barbed wire — 1 roll of sheep wire — 2 strands of barbed wire on the top Double strainers will be used at each change of direction or gradient of fence line. Strainers will be at most 30 m apart. Intermediate posts should be 1,8 m long and will be 2,5 to 2,8 m apart. The finished fence height will be approximately 1 100 mm high. N.B. The height will change with the ground contours. All posts and strainers will be driven into the ground until secure, with the exception of rock areas where concrete may be required. The posts are to be topped away from the top barbed wire strand. The wire is to be strained and fastened to the posts with galvanised staples. To allow for the future adjustments or the re-tensioning of wire, staples should be driven obliquely but not fully home on intermediate posts. Sheep wire to be Sentinel Green Rylock manufactured to BS4102 and galvanised to BS443 or equal approved. Barbed wire will be Sentinel Green Rypoint galvanised to BS443 or equal and approved. Staples are 40 mm x 4 mm galvanised to BS443 (green). Straining posts to be 2,1 m x 130 mm diameter, longer and thicker posts will be used in soft conditions or in hollows, etc. All surplus materials arising from the works shall be disposed off-site with the possible exception of earth / soil which can be spread locally. The anticipated start date is Quarter 2, 2016. Dates may be subject to change. The Translink Group reserve the right to accept part of any Tender from 1 or any number of Tenderers and may change the contracting strategy at any time. Once you have selected the action to ‘Express Interest’ you should view the CFT documents, then once you have completed your response click on the ‘tender’ option in the menu and follow the instructions.