I meant building above ground, no touching to the ground, except
that buses need to enter la
I know...
But what justifies an above ground int? For example, now there
is this plot of x sq m. If you're gonna build an above ground int
it would occupy that amount of space or a proportion of it, and
thus wasting land that could be used for building apartments or
used for mixed land use (trust me, you won't want to have a
shopping mall with a bus interchange on top or in the middle of
it).
And by "touching the ground" I mean that the amount of space you
use above ground is equal to the space you use on ground. Using the
example earlier, you cannot expand the int to more than x sq ft or
it will eat into other places alr. But underground, since not all
structures are built underground, or have underground elements, it
can be expanded, but of course it depends on whether they have
permit or stuff anot lah.
And would you want the buses to wind up and up the slopes to the
int?