The stadium’s new design is based on the calabash – an African pot
STADIUM ACCESS CONTROL
of Nations, manufactured and supplied a total of 170 turnstiles for the Soccercity Stadium. These comprised 154 Triumph 4 full-height turnstiles and 16 Trident waist-height turnstiles. The Triumph 4 full-height turnstiles
T
were supplied with a hot dip galva- nised finish according to architectural specification. A corrosive resistant finish was required due to the close proximity of a mine dump, containing corrosive chemicals, to the stadium. The Triumph 4 turnstile was also chosen due to its dura- bility in mass access applications. Following consultation with the engineers and architects, the Triumph 4 full-
All trainees were assessed through a
non-discriminatory Learner Ability Bat- tery test – used to determine literacy, numeracy and development potential. Employees were offered the opportunity for additional training and development to further their construction careers. The training centre assessed 907 unemployed learners and trained 798.
Structural design
To extending the stadium from a two- to a three-tiered venue, the structural profile of the existing suite levels and upper-tier seating of the western grand- stand were extended to encircle the pitch. The existing lower embankments were built to improve the view lines and comfort of the most popular seats in the house. The upper third of the existing embankment was raised to form a sec- ondary tier, thus turning the stadium into a 3-tiered, rather than a 2-tiered, stadium. The calabash pot shape was achieved
by forming a circular structure that envel- oped the upgraded triple-tiered concrete seating bowl. The façade was made of fibre-reinforced concrete panels in eight colours and two textures to reflect the shades and textures of the calabash. Open or glazed panels around the pot further suggest this pattern when illumi- nated from the inside. The calabash façade is supported by
120 inclined concrete columns, which rise 16.3m. The top of each column has a horizontal eccentricity of 6.5m in relation to its base. Due to the large movements and forces in these slender
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height turnstile was modified, in terms of aesthetics and function, to meet the needs of the stadium. The standard turnstile operates on a 90° rotation cycle. This was changed to a 180° rotation cycle which allows additional walkway width for the spectators. It also provides higher speed access. The turnstiles are fitted with a low energy fluorescent light for night-time events
and also have LED indicator lights (red cross and green arrow) to provide indication to spectators whether the turnstile is open or closed. The LED lights are fitted to the turnstile and are visible from up to 50m. The turnstiles are also fitted with LCD transaction counters, which count the number of entries through the turnstile. The counters are reset after each event by means of a reset key switch. The Trident waist-height turnstile was selected for use in the VIP areas because of
its visual appeal, durability and functionality. The turnstile is fitted with a hydrau- lic damper for ultra-quiet operation, even under conditions of high traffic. Both of the turnstiles were supplied with special mounting brackets and chas-
sis plates, for the mounting of the ticket readers and access control systems. These brackets were also custom-designed for this specific application.
columns, the reinforcing steel is ex- tremely dense (860 kg/m³), which made the use of a vibration poker extremely difficult. GLTA/Interbeton opted to use self-compacting concrete to construct these columns, which are connected with tie beams. These act in ring tension to limit long term deflection of the col- umns and façade structure. The design
each game at each venue will be pre-cast in concrete panels on the podium. The upper roof, which is cantilevered
from a triangular spatial ring truss, is covered by a PTFE membrane, while the bottom trusses are covered by a per- forated mesh membrane – giving the appearance of a smooth under-slung ceiling. The triangular spatial ring truss
The calabash pot shape was achieved by forming a circular structure that enveloped the triple-tiered seating bowl
and construction of the façade columns was planned and executed very carefully, with temporary propping and bracing, to prevent deflection during construction. The façade also features 10 vertical
slots, aligned geographically with the nine other 2010 stadiums across the country as well as the Berlin Stadium (where the 2006 FIFA World Cup took place). These represent the road to the fi- nal and it’s planned that the scores from
is supported by 12 40m concrete shafts which are anchored in the bedrock. The concrete for the bulk of the struc-
ture matches the existing structural profile to enable all pre-cast units to be made on site and improve on the costs and lead times of a structural steel framework. Eight pedestrian ramps, designed for
efficient movement of spectator traffic to and from the upper levels of the sta- dium, also provide vehicular access to all
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21
urnstar Systems, which supplied turnstiles for the 2003 Cricket World Cup and the 2008 African Cup
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