Customization: | Available |
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Usage: | Flying Angle Tower, Crossing Tower, Tension Tower, Angle Tower, Terminal Tower, Transposition Tower, Branching Tower |
Conductor Circuit: | Multi Circuit |
Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Height | According to customer needs |
Voltage Class | 10-1000kV |
Tower Type | Self-suspension |
Structure | Overlap Connection, bolt connection, |
Material | Q345B/A572, minimum yield strength >=345MPA; Q235B/A36, minimum yield strength>=235MPA Or according to the standards provided by the customer |
Details & Shape | Can be designed as per customer's requirement |
Earthquake resistance | Grade 8 |
Ice wrapping | 5-10 mm |
Verticality | 1 / 1000 |
Barks | Hot Dip Galvanization or Painted |
Delivery Time | According to customer requirements |
Galvanizing Standard | EN ISO 1461,ASTM/A123 or equivalent |
Suitable temperature | - 45°C -+ 45°C |
Service life | 50Years |
Manufacturing and Workmanship | BS449 or AISC or equivalent |
Welding Standard | AWS D1.1, AS554, AS 4100 standard or equivalent |
Nuts& Bolts | Grade 8.8 |
Spare parts | Provide additional tower and bolt spare parts according to order value |
Transporting materials to the tower sites and site preparation
The materials for construction needed for each tower are brought to site and distributed along the right-of-way where the towers will be built. Smaller poles are placed between the towers to support the transmission cables.
After completing site surveys, flagging and placing a call to BC One Call, the crews carefully remove the topsoil, and any necessary tree removal and brushing. Access roads are built so construction vehicles and equipment can travel to the site.
Building the foundations and anchors
Different types of foundations may be used to support the towers, depending on the soil type, depth of bedrock, and structure type. Excavation may be done with a mechanical excavator, hydrovac, auger, or hand digging.
Assembling the towers
Towers are generally built from the ground up. Line workers assemble the towers on the ground near the tower location - much like a giant, complicated 3D puzzle. This includes the use of heavy machinery. In areas that have soft ground composition, access mats (sometimes called rig mats) may be used to provide passage over the sensitive ground. Access mats provide structural support for equipment by dispersing weight and providing a solid base.
Raising the towers and poles
Tower sections are either assembled all in one piece, or in multiple pieces that are connected after they are raised. Telescopic cranes or helicopters are used to raise the tower sections from the ground, and bolt them together to complete assembly.
Poles are used to support cables between transmission towers and to maintain the tension of the cable. Framing and hardwire installation will be completed before the poles are installed, then lifted and set into place.