In article , Roland
Perry writes
Also, the routes through the terminal will have to be considered -
while getting on is relatively straight forward assuming they drop the
last-minute-only boarding scheme, getting off currently involves a
considerable walk through the bowels of the building.

Actually, if you work it out that won't be necessary.

Looking from the west side, the layout is something like this:

Platform level
----------------------------------------------------
| S | / \ /
Booking | E | / Departure \ / SEC = security
hall | C | / lounge \ / checks
---------------------------------------------
| C | \ /
Meet & | & | \ Arrivals / C&I = Customs &
greet area | I | \ area / Immigration
-----------------------------------------

Passengers go from the departure lounge into little foyers which lead to
the escalators and travalators. On arrival, these same foyers divert
them into further routes downwards into the arrivals area.

Remove the security and C&I mess, and you can send everyone through one
layer and take over the other layer for other purposes.

--
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