The London 2012 website (visit link) contains information about the velodrome:
"Located in the north of the Olympic Park, the Velodrome
is one of the most sustainable and iconic venues of the London 2012
Games.
Sustainable choices have been made wherever possible;
from the sourcing of wood certified by the Forest Stewardship Council used on
the track and external cladding, to the installation of a 100% naturally
ventilated system that eliminates the need for air conditioning.
Design and build
The Velodrome’s design
incorporates natural ventilation and lets in an abundance of natural light,
reducing the amount of energy needed for artificial lighting. Its roof collects
rainwater that will reduce mains water usage by more than 70 per
cent.
The venue’s designers worked closely with a design
panel, including Olympic gold medal-winning cyclist Sir Chris Hoy, to tailor the
track geometry, temperature and environmental conditions with the aim of
creating a record-breaking track.
The Velodrome has capacity for 6,000 spectators, with
the seating split into two tiers. A glass wall around the venue’s perimeter
between the lower and upper tiers of the venue’s seating, will give spectators a
360-degree view of the Olympic Park.
Wherever possible, the materials used in the venue’s
construction were sustainably sourced, including the 5,000 square metres of
western red cedar used to clad its exterior. Both this and the Siberian pine for
the Velodrome’s track were certified by the Forest Stewardship
Council.
In addition, the choice of a cable-net roof design
(which is ‘strung’ with steel cables in the manner of a tennis racket) reduced
the amount of material required and decreased construction time by 20
weeks.
Construction of the Velodrome started in March 2009 and
was completed less than two years later in February 2011. It was the first
sporting venue to be finished, 18 months ahead of the Games.
In April 2012 the Velodrome won an Architecture Award at
an awards ceremony hosted by the Design Museum.
After the Games
Legacy was at the forefront of
the design and build of the Velodrome. After the Games, the venue will be handed
over to the Lee Valley Regional Park Authority and form the heart of a new
VeloPark for use by the local community, clubs and elite
athletes.
The VeloPark will also include the reconfigured BMX
track, a new mountain bike track and a new road cycle circuit, as well as a
cafe, bike hire and cycle workshop facilities."