11Fencing#
11.1General#
Clause 11 describes the work to be carried out where fencing is required to be installed under the Contract.
11.2Scope#
Details of the fencing required to be erected under the Contract are stated in Clause 6.1 of Annexure MRTS14.1.
11.3Material requirements#
11.3.1General#
Material requirements shall be as shown in the design documentation, or where not so shown, as shown on Standard Drawings 1600, 1601, 1602, 1603 and 1604.
11.3.2Hardwood timber posts#
In accordance with Building Timbers: Properties and Recommendations for their Use in Queensland, all hardwood timber posts shall be durability Class 1 or 2 and shall either have the sapwood removed from the section in the ground and to a distance of 100 mm above the ground or the sapwood shall be treated, to H5 level, with a fixed salt preservative of the CCA (Copper Chromium Arsenic) type to the requirements of the Queensland Timber Utilisation and Marketing Act 1987.
11.3.3Softwood timber posts (excluding Cypress Pine)#
Softwood timber posts and fence droppers shall have no exposed heartwood, except on the ends, and the heartwood content shall not be greater than 10% of the cross-section area. All softwood posts shall be treated, to H5 level, with a fixed salt preservative of the CCA type to the requirements of the Queensland Timber Utilisation and Marketing Act 1987.
11.3.4Cypress pine#
Cypress pine posts shall be completely free from sapwood.
11.3.5Steel posts, stays and rails#
Steel posts, stays and rails shall comply with the requirements of AS/NZS 1163 and galvanised in accordance with AS/NZS 4680.
11.3.6Galvanised fencing wire (plain and barbed)#
Plain and barbed fencing wire shall comply with the requirements of AS 2423.
11.3.7Galvanised chainwire#
Galvanised chainwire shall comply with the requirements of AS 2423.
11.3.8Galvanised wire netting#
Galvanised wire netting shall comply with requirements of AS 2423.
11.3.9Welded mesh#
Welded mesh shall comply with the details shown in the design documentation.
11.3.10Steel posts (Y-Section)#
Unless shown in the design documentation as galvanised, steel posts (Y-section) shall be supplied with a bronze coloured coating. Where galvanising is specified, galvanising shall be in accordance with AS/NZS 4680.
11.4Construction#
Fencing shall be constructed in the locations and to the details shown in the design documentation. Minimum clearing only shall be carried out to allow for construction of the fence. Localised excavations shall be constructed where necessary.
Strainer posts or strainer assemblies shall be located at every change in horizontal direction and to the maximum spacings shown in the design documentation.
In undulating country, fencing shall be erected so that the post tops follow a smooth line, wherever possible. Wires shall be strained in accordance with the manufacturer's recommendations and tied to the strainer posts and/or assemblies, intermediate posts and droppers with approved ties.
Special treatments at water crossings and grids, where necessary, shall be constructed to the details shown in the design documentation or, where not shown, be made secure against stock.