DESIGN FLEXIBILITY OF STEEL POLES, ANYTHING BUT SET IN CONCRETE
Gateway Energy’s steel poles provide a new level of value in design efficiencies at the front end, through to cost savings during construction, O&M. Steel allows traditional boundaries to be pushed.
TOTAL PROJECT COST OUTCOMES
With a focus on cost reduction and greater value, utilities are increasingly looking at total project cost outcomes now instead of item-for-item cost comparisons, but there is still a lot of opportunity for those that aren’t. For those that are, this is playing a part in moving away from more traditional lines structures such as lattice steel towers and concrete poles to steel poles. Where a lattice steel tower may be cheaper to procure, once civils, assembly and erection costs are factored as well as construction timeframes, steel poles often come out as the better total cost option. On like-for-like comparison, concrete poles are heavier and in volume more expensive to transport and install making steel a better total cost option. For example, erection of commonly used 24m 40kN steel poles can be done with a standard crane borer with single fall rig without the need for hiring more expensive cranes.
What is often not factored into decision making processes is that steel poles are recyclable and have an end-of-life salvage value. In addition, steel poles with through-pole bolted connections can usually be reconfigured in-field quickly and safely without replacing a pole.
The design phase is critical in determining project outcomes. As every project is different, involving Gateway Energy early will add value to your project and enable us to design costs out of your project. We can alter pole diameter/taper and pole wall thickness to optimise a solution considering; design requirements, project location and transport costs, foundation bore diameter for standard equipment, lift weights for standard and available cranes. This can have a significant total cost impact especially for more remote projects.
Gateway Energy steel poles give designers more flexibility in configurations as we can design and supply bolt-on davit crossarms and other attachments.
If it can be imagined; then generally we can engineer, design, certify and fabricate it. Size and strength are not usually a limitation; increase pole height to increase conductor spans can save significantly in construction and maintenance costs.
ENGINEERED TO PERFECTION
Steel is a great material to work with. Gateway Energy can precisely engineer a structure to suit your requirements. Using a combination of software including PLS-POLE and Finite Element Analysis we can engineer and certify just about anything. We pay particular attention to stresses induced by loads at connection points and the surrounding pole body and induced moments introduced by deflections and sustained loads.
BUT CONCRETE LASTS LONGER THAN STEEL?
This is a common misconception. One Australian Utility has found and published that their steel poles are outlasting concrete poles on average by a factor of two. Why is this?
Firstly; Gateway Energy steel poles are all galvanised to a high specification. The galvanised zinc coating is a cathodic protective coating and the zinc becomes the sacrificial anode protecting the steel pole. The protection relies not so much on the coating thickness, though this can be important in determining corrosion rates, but more so on the mass of zinc on the pole (AS/NZS 4680). The zinc above ground is protecting the pole below ground until all the zinc is consumed. Given there is a lot of pole above ground, there is a lot of protection for the pole below ground. Gateway Energy also employs duplex protection at the ground line for direct-buried poles to protect against localised attack.
Secondly; Gateway Energy steel poles are designed for long life in mind. Unlike other steel pole manufacturers we use and recommend thicker in-ground butt sections on poles. AS/NZS 4676 states “1mm increase in steel thickness in normal soil can increase pole life by 10-20 years or more.”
Thirdly; steel poles can be stressed to maximum design loads and undergo years of cyclic loading without deterioration or stress cracking and without compromising the pole’s protective coating.
These factors combine to provide a solid argument to use Gateway Energy steel poles for your next line project.
Who is Gateway Energy? Gateway Energy is a leading designer, manufacturer and supplier of steel power transmission and distribution poles in Australia and the South Pacific region. We specialise in steel power poles and powerline package solutions covering all major components and are supported by one of the world’s largest companies, State Grid. We’ve been around for a long time and combine proven experience that you can rely on, innovative local Australian design with high quality. Our valued customers come back again and again because of our superior service and ability to reduce overall project costs. We have successfully supplied poles of all types, sizes and strengths to some of Australia’s largest transmission pole projects, regularly achieving significant savings for our customers. Make your project a success by becoming one of Gateway Energy’s valued customers. Contact us on firstname.lastname@example.org What Products and Services do Gateway Energy provide? Design, manufacture and supply of: Steel Power Transmission Poles, Steel Power Distribution Poles, Base Plate Poles, In-Ground Poles, Power Poles, Conductor, Powerline Materials Packages, Lattice Towers, Communication Poles, Communication Masts Which locations do Gateway Energy operate? Gateway Energy operates in all states of Australia including Queensland (QLD) incluidng Brisbane, Gold Coast, Townsville to Mt Isa, New South Wales (NSW) including Sydney, Newcastle and Wollongong, Victoria (VIC) including Melbourne, Tasmania (TAS) including Hobart and Launceston and Western Australia (WA) including Perth, Karratha and Port Hedland. We also operate in Northern Territory (NT) including Darwin and Canberra (ACT). Gateway Energy also operates internationally Including having an office in Papua New Guinea (PNG) including Port Moresby and Lae. New Zealand including Auckland, Wellington and Christchurch and other Pacific Islands power transmission line requirements such as Fiji, Samoa, Tonga and Solomon Islands.