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Tunnels-Are drilled using this Machine

A  tunnel boring machine  ( TBM ) , also known as a "mole", is a machine used to excavate  tunnels  with a circular cross section through a variety of soil and  rock strata . They may also be used for  microtunneling . They can  bore  through anything from hard rock to  sand . Tunnel diameters can range from a metre (done with micro-TBMs) to 19.25 metres to date. Tunnels of less than a metre or so in diameter are typically done using  trenchless construction  methods or  horizontal directional drilling  rather than TBMs. Hard Rock Tunnel Boring Machine In hard rock, either shielded or open-type TBMs can be used. All types of hard rock TBMs excavate rock using disc cutters mounted in the cutter head. The disc cutters create compressive stress fractures in the rock, causing it to chip away from the rock in front of the machine, called the tunnel face. The excavated rock, known as muck, is transferred through openings i...

Must Read Messages on Engineers day

1. I wish to all the engineers durability of granite, strength of M-60, Foresight of theodolite, Accuracy of Total Station, Success of STAAD and all loads are transfered successfully to columns, let almighty pre-stress U for all types of Unforced loads. HAPPY ENGINEERS DAY. 2. Everybody says Engineering is so easy that it it just like walking in a park But only Engineers know that park is called Jurassic Park. HAPPY ENGINEERS DAY. 3. You can be a Doctor and Save lives.You can be a Lawyer and defend lives. You can be a Soldier and protect lives. But Why to play with others lives? So we simply became engineers to screw up our own lives. HAPPY ENGINEERS DAY. 4. We design, We construct, We Observe, We initiate, We drive, We move, We accelerate the World, We are the gears of Progress, we are the future of the nation, we are the Engineers, and I am proud to be an Engineer. HAPPY ENGINEERS DAY. 5. Someone asked an engineer, Why you feel proud of being an engineer? He smiled and tol...

world's highest and longest tunnel-to-tunnel bridge is here

 The Aizhai Bridge The  Aizhai Bridge  is a suspension bridge on the G65 Baotou–Maoming Expressway near Jishou, Hunan, China. With a main span of 1,146 metres (3,760 ft) and a deck height of 336 metres (1,102 ft), as of 2013, it is the seventh-highest bridge in the world and the world's fifteenth-longest suspension bridge. Of the world's 400 or so highest bridges, none has a main span as long as Aizhai. It is also the world's highest and longest tunnel-to-tunnel bridge.  The bridge contains 1888 lights to increase visibility at night. Construction on the Aizhai Bridge began in October 2007 and was completed by the end of 2011, ahead of schedule. The bridge was temporarily opened to pedestrians during the 2012 Spring Festiva and was formally opened to traffic in March 2012. The bridge was built with the assistance of a $208 million loan from the Asian Development Ban...

Tsing Ma Bridge-Largest span carrying Rail traffic in world

Tsing Ma Bridge is a bridge in Hong Kong  which is the 9th longest span suspension Bridge, and was 2nd longest at the time of its opening. Construction of this bridge took place for 5 long years at a budget of HK$7.2billion. The main Span of the bridge is around 1377mts and width of 41mts with the below clearence of 62mts, and height of 206mts. The lower level carries 2 rail track which is know for the longest span for Rail Traffic. View of Tsing Ma bridge at night Source :Wikepedia

world's longest cable-stayed bridge-Russky Island, Russia

1. The bridge to Russky Island is the world's longest cable-stayed bridge, with a 1104 m long central span. 2. The bridge also has the second highest pylons after the Millau Viaduct and the longest cable stays. 3. The design of the bridge crossing has been determined on the basis of two primary factors: Shortest coast-to-coast distance in the bridge crossing location 1460 m. Navigable channel depth is up to 50 m. The locality of the bridge crossing construction site is characterized by severe climate conditions: temperatures vary from -31 °C to 37 °C; storms bring winds of up to 36 m/s and waves of up to 6 m in height; and ice formations in winter can be up to 70 cm thick. Total Length : 3100meters Width : 29.5m Height : 320.9m Longest Span  : 1104m Clearence  Above : 70m Building  Cost : $1.1 billionUSD Opened : 2012 Source : Wikepedia, Google

World's Largest Building-New century global center

1. New century global center is the worlds largest building in terms of Floor are which comes to around 18,000,000 Sq ft. Which is a multipurpose building located at Chengdu, China The centrepiece of the building is a water park ("Paradise Island Water Park"), containing a 5,000 m 2  (54,000 sq ft) artificial beach, where a giant 150 by 40 m (490 by 130 ft) screen forms the horizon to offer sunrises and sunsets. At night, a stage extends out over the pool for concerts. A stand has been built overlooking the pool with a food court and entrance underneath at the floor level. The new  Intercontinental Hotel  will feature 1,009 rooms that are spread over 6x8 story blocks around the edge of the complex. 

Phoenix International Media Centre.

Phoenix International Media Center locates in the southwest corner of Chaoyang Park; the site area is 1.8 hectares. The total floor area of the building is 65,000m2 with a height of 55m.   The continuous integrity and the smooth surface of the building express the topological corporate culture of the Phoenix Media. The elevation difference between the southern and northern internal spaces are able to provide quality of sunlight, ventilation and landscape view to the office towers, meanwhile avoiding glare and noises for the broadcasting room. In addition, the elevation difference also avoids blocking the sunshine to the residential building at the northern direction.   In addition, energy-saving and low-carbon concepts are also applied in the building design. Instead of setting drain pipe on the smooth surface, the rainwater will be collected by dropping naturally along the structural ribs into the collection tank which locates at the bottom of the building. Af...

Second longest cable stayed bridge in North America-Port Mann Bridge

The widest bridge in the world (until the Bay Bridge's east span recently opened), the bridge east of Vancouver, B.C., which opened in 2012, remains the second-longest bridge in North America. The cable-stay bridge uses an impressive 288 cables to reach a total bridge length of 6,866 feet. The  Port Mann Bridge  is a 10-lane  cable-stayed bridge  that opened to traffic in 2012. It is currently the second longest cable-stayed bridge in North America and was the widest bridge in the world until the opening of the new  Bay Bridge in California .  The new bridge replaced a steel arch bridge that spanned the  Fraser River , connecting  Coquitlam  to  Surrey  in  British Columbia  near  Vancouver .  The old bridge consisted of three spans with an  orthotropic deck  carrying five lanes of  Trans-Canada Highway  traffic, with approach spans of three steel plate girders and ...

Ferrari Theme Park-Worlds fastest roller coaster is here

5 things to know about Ferrari Theme Park 1. Ferrari theme park amusement park located at yas island, Abu dhabi, UAE. At a area of 86000 sq m. The construction of this park took over 3 years and was open to public on 4th November 2010. 2. It has the record for the Largest frame structure ever built. 3.  Ferrari World Abu Dhabi was named the "Middle East's Leading Tourist Attraction" at the World Travel Awards 2015. 4. Formula Rossa - World's fastest roller coaster is here Speed reaches around 240km/h in 5s 5. Entry fees is around 525 AED for gold, 360AED for silver & 275AED for bronze

Facts of Circular Building-Aldar HQ

1.Aldar headquarters is a first of its kind with circular structure Located at Al Rahan, Abu dhabi, UAE. 2. Height of building is around 110mts with a floor area of 61900 m2 3. The ground of the Aldar HQ was designed around Golden ratio 4.  The distinctive building was voted the “Best Futuristic Design” by The Building Exchange (BEX) Conference held in  Spain .   5.  The shape of this building is achieved through the use of structural diagrid, a diagonal grid of steel. Source : Google & Wikepedia

SAGARDA FAMILIA - A Church which is being in under construction Since 134 years

Sagarda Familia( Also called as Basilica) - Roman Catholic Church in Barcelona, Spain. Construction of this world Heritage structure was started in 1882, and which would also take around 10 to 12 years to complete it would be fully completed by 2028. The Architectural Style of this is Modernisme.

Plastic+Concrete = Reinforced Concrete A new Invension

Researchers from James Cook University in Australia have created a type of concrete that's reinforced by plastic waste, rather than steel. The technique, which is a first in Australia, will greatly reduce the environmental impact of concrete, and we can't help but wonder why we're not doing this already. “Using recycled plastic, we were able to get more than a 90 percent saving on CO2 emissions and fossil fuel usage compared to using the traditional steel mesh reinforcing," said Rabin Tuladhar, the lead researcher from JCU in a press release. "The recycled plastic also has obvious environmental advantages over using virgin plastic fibres.” The concrete was reinforced using recycled polypropylene plastic instead, and strength and durability tests show that the end result could be used to build footpaths and precast elements such as drainage pits and concrete sleepers. Tuladhar is now working with local concrete producers to find out how to apply the f...

Porous Concrete :Which can absorb 4000lts of water in 60sec

Flash flooding is more dangerous than you might think: experts warn that a mere six inches of fast-moving water can knock you off of your feet. It's no wonder, then, that flash flooding is routinely one of the leading causes of weather-related deaths in the United States. A British firm recently unveiled technology that could help mitigate some of the dangers of flooding, especially on roadways. Designed by sustainable building company Tarmac, Topmix Permeable is an absorptive concrete pavement capable of soaking up more than 800 gallons of water each minute: Topmix can help rapidly remove water from roadways, preventing the potentially dangerous buildup of standing water. As it is absorbed, stormwater is filtered through a porous layer of pebbles, removing petroleum hydrocarbons and other pollutants commonly found on roadways before the water is ultimately returned to the water table. "Being able to control and actively manage the drainage of rainwater from ...

Greatest Civil Engineering Feats

The Akashi-Kaikyo Bridge, also known as the Pearl Bridge, has the longest central span of any suspension bridge. The central span is a staggering 1,991 meters, or 6,532 ft. It took a century to overcome deep waters, strong winds, and high chance of earthquakes to build the Rion-Antirion Bridge. Completed in 2004, it spans the Gulf of Corinth and won an Outstanding Civil Engineering Achievement award. The Netherlands North Sea Protection Works is a marvel of coastal engineering created to protect a large area of land around the Rhine-Meuse-Scheldt delta from the sea. The Millennium Force Roller Coaster in Sandusky, Ohio, is the world’s tallest (310 feet) and fastest (92 mph) roller coaster, and is supported by 226 footers using 9,400 yards of concrete. It took 175 truckloads of steel to create the frame. </div> <div> the Hoover Dam, standing 726.4 feet high, is one of the tallest concrete dams ever built and created...

Facts That Every Civil Engineer Should Know

In the 18th century, the term “civil engineering” came into use to describe engineering work that was performed by civilians for nonmilitary purposes. Smeaton was the first self-proclaimed civil engineer, and often regarded as the "father of civil engineering". The Institution of Civil Engineers (ICE) was founded in a coffee shop in London in 1818 by eight young civil engineers, the youngest was 19. The first degree in Civil Engineering in the United States was awarded by Rensselaer Polytechnic Institute in 1835. The first civil engineering degree to be awarded to a woman was granted by Cornell University to Nora Stanton Blatch in 1905. The American Society of Civil Engineers (ASCE) was founded in 1852. It is the oldest national engineering society in the United States.

Tallest Dams In the World

1. Jinping-I Dam Height: 305 m (1,001 ft) Type: Concrete Arch Location: China 2. Nurek Dam Height:300 m (980 ft) Type: Embankment, earth-fill Location: Tajikistan 3.Xiaowan Dam Height: 292 m (958 ft) Type: Concrete Arch Location: China 4.Xiluodu Dam Height: 285.5 m (937 ft) Type: Concrete Arch Location: China 5.Grande Dixence Dam Height: 285 m (935 ft) Type: Concrete Gravity Location: Switzerland 6. Inguri Dam Height: 271.5 m (891 ft) Type: Concrete Arch Location: Georgia 7.Manuel Moreno Torres Dam Height: 261 m (856 ft) Type: Embankment Earth fill Location: Mexico 8.Nuozhadu Dam Height: 261 m (856 ft) Type: Embankment Location: China 9.Tehri Dam Height: 260.5 m (855 ft) Type:  Embankment Earth fill Location: India 10.Mauvoisin Dam Height: 250 m (820 ft) Type: Concrete Arch Location: Switzerland