The roof of the London 2012 Olympic Games' Handball Arena is being covered with over 3000 m2 of sustainably-sourced copper.
New images from the Olympic Delivery Authority (ODA) show the roof is now complete and the progress made in cladding the 7000-seat venue with sustainably-sourced copper.
The top section of the Arena is being wrapped in 3000 m2 of copper with a high recycled content, of which 65% is from production scraps. Work started after the unique 'naturally lit' roof of the venue was finished recently.
Construction of the venue is due to be completed in early 2011, with the copper cladding on track to be finish by the end of the year.
The unique roof of the Handball Arena is fitted with 88 rooftop sun-pipes that bounce sunlight onto the field of play in the Arena. The 1.5-m wide devices are designed to switch off when required - such as to allow television broadcasting to film during a live game - and in Legacy will provide greater illumination than similar sized conventional lights, achieving annual energy savings of up to 40%.
Backup electric lights will only switch on temporarily when photo-sensors in the roof detect a sudden loss of sunlight during the day, such as when a dark cloud passes over.
Other environmental elements of the venue's design include a rainwater harvesting system which collects water from the roof, reducing usage by an estimated 40%.
Handball Arena facts: