Why are utility poles made out of wood?
Once deeply impregnated with the chemicals they use wood telephone poles are as durable as anything presently manmade. They are resistant to rot, insects and they don’t conduct electricity. So they continue to be the most economical, practical material for telephone poles.
Which pole is better wood or concrete?
Wood is strong but flexible, while concrete is more rigid. In high winds, wooden poles will flex and bend, while concrete is more likely to crack. Wooden poles are cheaper to produce than concrete. On the other hand, concrete poles do not sustain the kind of damage that wooden ones do and can be easier to repair.
How long do wood electric poles last?
Wood poles offer an opportunity for atmospheric carbon sequestration not provided by other materials. An Electric Power Research Institute study suggested that wood poles lasted 50 years. Most utilities assume that their poles provide 30 to 40 years of service life.
Why do we use wood poles over metal poles?
These coatings, which can be applied over both galvanizing and weathering steel, provide a non-leaching, sustainable corrosion barrier that can last as long as the poles – even in harsh soil conditions. Traditionally, utilities have used wood poles to carry electric wires and cables from point to point.
Why are electric posts made of wood?
History of Wood Poles The success with telegraph wires led to the use of poles for wires to distribute electricity. With the development of electricity generation and the need to carry that electricity to homes and factories increased demand for wood poles to carry the wires, insulators and other items required.
How much does a 30 ft telephone pole weigh?
The Premium Pole
| class | ||
|---|---|---|
| weight (in pounds) | ||
| 25 | 490 | |
| 30 | 650 | |
| 35 | 829 |
What are the drawbacks of wooden poles?
For wood, the major disadvantage is the areas of low humidity and increased risk of fires or areas of high concentration of bugs, which decrease the durability of the material.
What material is used to of electric pole?
Shaal wood was commonly brought in use for electrical pole. Because for wooden electric pole, the best quality of the wood is ‘shaal. ‘ The average weight of ‘shaal’ wood is 815 kg per cubic meter Apart from Shaal, Masua, Tik, Chir, Debdaru woods are also used for the purpose as per their availability.
Will telephone poles rot in the ground?
A survey of 150 utility companies found the average service life of utility poles to range from 25 to 37 years. The most common reason for replacement being, “strength degradation from ground line decay”. When the chemicals become thin enough at the ground line – the pole becomes subject to often rapid decay.
Which pole has longer life?
poles are used in 11 KV and 400/230 volt system to a large scale, apart from this, we also use PCC poles in 33KV H.T. Line. This type of poles is costlier than a wooden pole but cheaper than a steel pole. This kind of poles has a longer life, and the maintenance cost is negligible.
Why are some power poles metal?
In the past, utility poles were made from treated wood, but as technology advanced, steel became the material of choice, even over concrete and fiberglass. Some advantages of steel utility poles include: Same or better load bearing capacity as wood. High strength.
What are the disadvantages of steel poles?
Disadvantages of Structural Steel Structures
- Steel is an alloy of iron.
- It has high maintenance costs as it has to be painted to make it corrosion-resistant.
- There are extensive fireproofing costs involved as steel is not fireproof.
- Buckling is an issue with steel structures.