Page 58 - SAICE book proof 2 LATEST JULY 2014

s a i c e
GAUTENG PROVINCE

1974. The main runway is over three kilometres long ◊ Below: Lanseria Airport
and on top of a rolling landscape to the west of Johan- ◊ Below Centre: Hammanskraal Pedestrian Bridge
nesburg. In terms of private and corporate airplanes ◊ Bottom: University of Pretoria
accommodating local as well as international travel,
it is the largest airport in Africa. Thousands of aircraft
movements take place per annum and at any time a
couple of hundred aircraft are on the ground and in
hangers jotted around the premises.

25°56’15.90” S, 27°55’35.10” E

39. Pedestrian Bridge over the N1 highway
at Hammanskraal. The clients for this bridge are the
Tshwane Metro, the Metsweding Metro and the South
African National Roads Agency (Sanral). The walkway
is a curved thin concrete slab section with a concrete
handrail. At the time, it was the first to use a heavy
walled steel piping external corkscrew configuration
for support symbolising linear movement along the
axis. In the words of the CEO of SANRAL, Eng Nazir
Alli, civil engineering structures and design along the
freeways should be aesthetically pleasing in addition to
its functionality – this bridge certainly conforms to that
principle.

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