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Comparing Faced Symmetrical Hardfill and Concrete-Faced Rockfill Dams

Comparing Faced Symmetrical Hardfill and Concrete-Faced Rockfill Dams

With both faced symmetrical hardfill and concrete-faced rockfill dams being suitable for sites with poor foundations, the authors set out to determine unique characteristics of the two dams types. Their research revealed a smaller amount of deformation and lower costs for FSHDs.
Dam Safety: Stability and Rehabilitation of “Smaller” Gravity Dams

Dam Safety: Stability and Rehabilitation of “Smaller” Gravity Dams

Gravity dams about 100 feet high and smaller often require special considerations when evaluating stability and rehabilitation of these structures. Three case histories are presented that illustrate some of the unique challenges in the stability evaluation and upgrading of these dams.
Aerones secures $2.9M grant to expand into offshore wind

Aerones secures $2.9M grant to expand into offshore wind

Onshore wind turbine inspection and cleaning company Aerones announced that it received a 2.5M € ($2.9M) grant from the European Maritime and Fisheries Fund (EMFF) to expand its turbine blade inspection, maintenance and repair offerings to offshore wind. The grant will be used to adapt the company’s already established onshore technology so it can be used in offshore applications. Aerones’ […]
Modern structural and technological solutions for new large dams

Modern structural and technological solutions for new large dams

By Yury Lyapichev and Yury LandauSuch "newer" dam types as facing symmetrical hardfill and rockfill with an asphalt concrete core provide solutionsto site-specific challenges for dams in Russia and can be used worldwide.
Substructure Testing Paving the Way to Longer Wind Turbine Blades

Substructure Testing Paving the Way to Longer Wind Turbine Blades

The lengthening of rotor blades is often taken as emblematic of wind turbine evolution, and maturation of the industry as a whole. It’s a sign of not only technological development, but also a reflection of the drivers to continually innovate and deliver more efficient turbines.
Solving Challenges at High Falls Dam: Seepage, Stability, and Public Relations

Solving Challenges at High Falls Dam: Seepage, Stability, and Public Relations

To solve seepage and slope stability problems at High Falls Dam, Wisconsin Public Service needed to construct a toe berm.
Tech Briefs

Tech Briefs

Collection of articles related to hydropower technology
ASDSO awards NYCDEP’s Gilboa Dam its 2015 National Rehabilitation Project of the Year

ASDSO awards NYCDEP’s Gilboa Dam its 2015 National Rehabilitation Project of the Year

On Monday, Sept. 14 during it annual meeting awards ceremony held this year in New Orleans, La., the Association of State Dam Safety Officials presented its 2015 National Rehabilitation Project of the Year award to the New York City Department of Environmental Protection’s Gilboa Dam.  
REpower Systems: Less is More Offshore

REpower Systems: Less is More Offshore

When REpower commenced developing the 5M turbine in 2001 the company's R&D department totaled only around 15-20 engineers, compared with the 200+ found there today. During September 2004, REpower Systems AG successfully erected a 5 MW 5M prototype at Brunsbüttel north of Hamburg, Germany, the largest and most powerful wind turbine in the world at that time.
Renewables Industry Learning from Oil and Gas Insights

Renewables Industry Learning from Oil and Gas Insights

The way the world thinks about renewable energy has transformed. It is no longer just a concept but a reality, and interest in renewable energy is growing globally. With much of the world looking for fossil-free energy sources, wind power is becoming increasingly popular, and forward-looking companies are adapting their oil and gas solutions for use in the renewables sector.