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the wind wing-wall concept figure 5 > Shows a single wing-wall option which is more efficient for winds coming Irom inclined incidences than figure 4

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figure 4 > shows a design with a wing-wall at both sides of the orifice This is better in situations where wind comes from an 90° spread of varying incidences (of varying times, directions, speeds, etc) to the surface of the external wall of the building. The orifice should have openable panels (eg full-height sashes) that operate as valves' to be adjusted depending on external wind conditions for that moment and should be placed closer to the leeward wing-wall for situations of greater inclined wind incidences.

The perpendicular wing-wall configuration is more effective at stagnating the approaching air-flow which results in flow more perpendicular to the opening and with less contraction. In addition, the wing-wall devices should also have compatible ad|ustable horizontal 'spoilers' at each floor level to minimise vertical flow over the face of the building and to further control the incoming winds in the event of conditions of very high wind speeds section A-A

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The soaring, vertical articulation of the wind wing-wall as the major emblematic feature of the form, coupled with the dramatic, blank fuselage of the eastern facade introduces a sense of aerodynamic poise, heightened by the canted roof canopy and terminal wall-forms at the summit level. Equally, that Yeang has depicted the sectional form in relation to the height of 1 + Vj times the length of a mega-top jumbo-airliner is probably more than a subliminal reference to streamlining, air-flow and airframe form, which all find their place in this architecture - one which gathers the wind, in the pursuit of an overall ecological agenda.

What becomes clear, is that each of Yeang's successive projects make a developing contribution to the next - extending the range with knowledge level 02

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