Mapping objects exactly on top of each other

Help and support
1

At this university there are walkways exactly on top of each other., or on interleaving floors 2, 4, etc.

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20261004_070304
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20261004_070507
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What is everybody’s strategy for mapping them now in 2026?

Note they need to have the exact same XY coordinates, because they are stacked exactly on top of each other.

2

hi @jidanni, maybe the key “layer” (Key:layer - OpenStreetMap Wiki) helps you.

3

I would use Simple 3D:

building:part and building:levels with building:min_level etc.

See Simple 3D Buildings - OpenStreetMap Wiki