Опубликовано: 6 авг. 2013 г.Managing the growth of trees and other vegetation around transmission lines is key to helping ensure public safety and electric system reliability. In some areas, difficult terrain and wetlands around the transmission line corridor make it very difficult to access with ground crews. The helicopter and air saw allow trimming to be performed in a few hours, while a ground-based crew might take several days to accomplish the same amount of work in difficult conditions.
The helicopters are equipped with a heavy-duty air saw with rotary blades suspended on a 90-foot vertical boom. This video shows an air saw being used to trim trees along ATC rights-of-way in Michigan's Upper Peninsula in August 2013.
Каспийское море | Природа Ближнего Востока | Discovery
Опубликовано: 21 июн. 2020 г.Каспийское море — самый большой замкнутый водоем на планете. Он расположен в самом сердце одного из древнейших центров цивилизаций — в месте, где Восток соединяется в Западом.
Разнообразие ландшафтов от горных пиков до степей, от пустынь до болот. Древнейшие животные на планете, которые вынуждены бороться за выживание, и аутсайдеры, вырвавшиеся вперед.
Как все это сочетается так гармонично? Смотрите прямо сейчас!
Technology Meets Contemporary Design | The Serif TV by Samsung
Опубликовано: 26 дек. 2019 г.Television’s are fundamental in almost every home, often becoming a feature of your living room whether you like it or not. Recently it was the Frame from Samsung that began to revolutionise the way a TV should act, with its preference towards being an artwork rather than a flat black box. However this new collaboration between Samsung and Ronan & Erwan Bouroullec, takes this concept even further; with their design of the Serif TV blurring the lines between furniture and technology, and how they integrate within our lifestyle.
With a distinctive I shaped profile inspired by the Serif font, this TV is also packed with Samsung's Quantum Dot QLED technology and unique ambient mode features. We recently took the Serif for a test drive and love how unique and distinctive it is in a market still dominated by black squares on walls.
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Producing the world's first 3D-printed bridge with robots «is just the beginning» — Joris Laarman
Опубликовано: 13 янв. 2016 г.The technology that startup MX3D is developing to 3D print a bridge in Amsterdam could be used to produce «endless» different structures, says Dutch designer Joris Laarman in this exclusive movie.
MX3D is a new research and development company co-founded by Laarman and Tim Geurtjens, which plans to use robots to produce the world's first functional 3D-printed steel bridge over an Amsterdam canal by 2017.
«The basics of the technology is pretty simple,» Laarman explains in the movie, which was filmed at MX3D's workshop in Amsterdam. «We're using an industrial robot that is usually used in assembly lines in the car industry. We have combined this with a welding machine and our own software to have it 3D print in metal.»
The six-axis robots that MX3D are adapting are able to rotate their arms along six different planes of movement. They build up structures by depositing small quantities of steel in layers.
Unlike traditional 3D printers, robots can produce much larger structures by moving across them as they print.
«You're not limited by size, so we can theoretically print endlessly big,» Laarman says.
The steel footbridge will span eight metres. MX3D originally intended to print the bridge in situ, but had to abandon that plan over health and safety concerns. Laarman and his team will now reconstruct a section of the canal in their workshop to demonstrate that it could be done on site.
The bridge will be printed in one piece, with the robots printing a load-bearing structure to support their own weight as they work.
«The bridge is going to be fairly small – it's a pedestrian bridge,» Laarman says. «It's still a huge challenge, because we want to print it in one go. We want the robots to print their own support structure as they move over the water.»
10. Donghai Bridge; Yangshan Port, China
9. Hangzhou bay Bridge; Zhejiang, China
8. Yangchun Bridge; Beijing, China
7. Manchac Swamp Bridge; Louisiana, USA
6. Lake Pontchartrain Causeway; Louisiana, USA
5. Beijing Grand Bridge; Beijing, China
4. Bang Na Expressway; Bangkok, Thailand
3. Weinan Weihe Grand Bridge; Xi'an, China
2. Tianjin Grand Bridge; Tianjin, China
1. Danyang-Kushan Grand Bridge; Shanghai, China
Shandong Qingdao Jiaozhou Bay Bridge, The World's First Bay Bridge in China
Опубликовано: 23 нояб. 2018 г.Qingdao Jiaozhou Bay Bridge, The World's First Bay Bridge in China.
Jiaozhou Bay Bridge (or Qingdao Haiwan Bridge) is a 26.7 km (16.6 mi) long roadway bridge in eastern China's Shandong province, which is part of the 41.58 km (25.84 mi) Jiaozhou Bay Connection Project.[1] The longest continuous segment of the bridge is 25.9 km (16.1 mi)., making it one of the longest bridges in the world.
The Jiaozhou Bay Bridge transects Jiaozhou Bay, which reduces the road distance between Qingdao and Huangdao by 30 km (19 mi), compared with the expressway along the coast of the bay, reducing travel time by 20 to 30 minutes. The design of the bridge is T-shaped with the main entry and exit points in Huangdao and the Licang District of Qingdao. A branch to Hongdao Island is connected by a semi-directional T interchange to the main span.The construction used 450,000 tons of steel and 2.3 million cubic metres (81×106 cu ft) of concrete.The bridge is designed to be able to withstand severe earthquakes, typhoons, and collisions from ships.[4] It is supported by 5,238 concrete piles.[6] The cross section consists of two beams in total 35 m (115 ft) wide carrying six lanes with two shoulders.
