Asia-Pacific has the largest power generation construction pipeline out of the major regions, with $1.67 trillion worth of investments, according to a new report.
1. Barzan Gas Development – Qatar
Youssef Ouchagour, construction industry analyst at Timetric’s Construction Intelligence Center, analyses the current state of the global data centre construction market and presents five of the largest data centre projects currently under construction in the world.
Whether buildings are comprised of commercial, residential or office space, they can be assessed, rated and certified according to their green and sustainable features.
With arising worries about the environment, global warming and pollution, skyscrapers, office towers and even mosques are increasingly incorporating green and eco-friendly design and features. Here, as part of the sustainability week on WCN, we look at some of the world’s greenest buildings.One Angel Square, UK
‘Living walls’, green façades, vertical farming or roof gardens are increasingly featuring in the design-concept of buildings.
If you believe the old song, the M25 motorway that circles London is ‘The Road to Hell’. But while many motorists may be inclined to agree with that sentiment — particularly during the coming bank holiday weekend — there are plenty of roads around the globe that offer much more than traffic jams and suspect hotdogs from service stations. From those that take in remarkable natural scenery, through to those constructed using innovative technologies — we look at some of the world’s most interesting roads.1) The Atlantic Ocean Road, Norway
You might think that tunnels are always built by professionals, with an obvious and practical purpose — to transport people, to reach a deposit of coal or diamonds, to transport water, and so on. For some, however, digging a tunnel is a hobby, a distraction, an escape, a way of expanding their houses underground or even a way to exercise — we look at some of the tunnels built by ordinary people around the world. 1. Elton Macdonald
A selection of current construction work and studies shows hydropower’s wide range, says Patrick Reynolds. Numerous hydropower and pumped storage projects are in construction or planning across the globe, and International Water Power & Dam Construction (IWP&DC) briefly notes progress and developments on a selection in Asia, Europe, North America and South America, and also the Middle East.A major hydropower scheme that is well advanced is the Ulu Jelai project, in Malaysia. Being constructed by Salini Impregilo, the project involves significant surface and underground works.Both surface and underground works feature in the Foz Tua pumped storage project, in Portugal, and which is also at an advanced stage. The project involves construction of a 108m-high double-curvature arch dam.Developing hydropower where a new dam is not needed, efforts are pushing ahead in the US to exploit existing lock and dams structures, such as the run-of-river projects being undertaken by power company American Municipal Power (AMP) on the Ohio River. The plants under construction include 72MW Smithland.Statkraft may give the go-ahead this year for two run-of-river projects in Chile, following an acquisition in 2015. However, following a recent review of its investment programme it has yet to decide what action it will take.Many further projects are coming, and a few among those include recent awards for consultants MWH Global and ÅF, respectively, in South America, Europe and the Middle East.Malaysia: Ulu JelaiConstruction of the 383MW Ulu Jelai hydropower project, in Malaysia, has been underway since 2011 and is well advanced, including the recent milestone completion of the Susu roller compacted concrete (RCC) dam.Ulu Jelai is being developed by Tenaga Nasional Berhad (TNB) in Pahang state, approximately 200km north of the capital Kuala Lumpur. It is one of five hydro projects being built at present to help stabilise the power grid.The project is located on Bertam River, and involves major dam and tunnel works. The rated net head of the scheme is approximately 360m.Key features of the project include the Susu reservoir on Bertam River, and to which water is conveyed by transfer tunnels from the Lemoi and Telom rivers, running on opposite sides of the main river. Lemoi and Telom are tributaries of Bertam and naturally join the main river downstream of the project location but are being tapped with offtake weirs at higher elevations. The tunnels have lengths of 7.5km and 8.5km, respectively.Water flows from Susu reservoir down a 9.5m-diameter unlined headrace tunnel to the underground powerhouse complex, holding a pair of 191MW Francis turbines. Ulu Jelai is expected to generate approximately 326GWh of electricity annually.Salini Impregilo is main contractor on the scheme, which is nearing completion.The Susu RCC dam is more than 80m-high with a crest length of 512.5m. Its volume is approximately 750,000m3, the contractor said.The volume of other concrete works on the project is approximately 190,000m3. Surface excavations and earth moving has involved more than 3M m3 of material.Underground construction has been performed by both TBM boring and drill and blast excavation. In total, the project has called for excavation of 26km of tunnels and also the powerhouse cavern complex. The TBMs were used to bore 15km of tunnels, and 11km of excavation of undertaken by drill and blast.Salini Impregilo notes that the total underground rock excavation is approximately 800,000m3.