31 Jan '18, 1pm

Full-scale self-erecting tower demo underway

Full-scale self-erecting tower demo underway

The Spanish company’s Nabralift prototype tower is constructed using hydraulic jacks on the ground that elevate sections and introduce new modules underneath. Tower pieces that are smaller than the industry standard are used in the tower, the company stated, which eliminates the need for specialised trucks and cranes. Nabrawind will carry out six months of fatigue testing on the turbine to simulate 25 years of real-life conditions at a test site in Navarra, northern Spain. It will do this by vibrating the upper part of the 160-metre-high tower to generate load, the company stated. The prototype tower consists of two segments: a three-column, 86-metre frame structure, with a 71-metre conventional tower placed on top. Nabrawind eventually aims to use the self-erecting system on turbines with tower heights of up to 200 metres, it added. It expects to deliver the first series ...

Full article: https://www.windpowermonthly.com/article/1455919/full-sca...

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anilnetto.com 01 Feb '18, 3am

Then one fine day, you wake up to find a 35-storey tower, in a project of over 500 homes, under construction next door, da...