This is awlays a bit tricky, as we don't tend to use it in this countable way in EN.

The trouble is, you will also come across 'circulations horizontales / verticales' — while the former can be 'corridors', obviously the vertical ones aren't! Also note that 'corridor' tends to express soemthing about the form it takes — i.e. usually longer than it is wide; you probabaly wouldn't call a theatre foyer or hotel reception or station concourse a 'corridor' — yet they are all, generically, 'circulations' — which is really more about its function than its form.

That's why I'm suggesting this, as being one accepted technical term in EN in the exactly equivalent field (architecture / building planning).
Just like with 'piece of equipment' or 'item of clothing', adding the auxiliary 'area' in this way neatly solves the countable / uncountable issue.

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Note added at 6 hrs (2018-09-19 17:59:08 GMT)
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A well-meaning and expert colleague who sadly no longer pariticpates in KudoZ has sent me the following reference information:

"Ehe BSI Glossary of Bldg & CE terms defines "circulation element - Construction for the movement of persons and goods" (it seems to refer to things like steps,
treads, risers etc.) and "circulation space - Space for the movement of persons,
goods or vehicles" (both are one of the three "base terms", the other being
"stair").

Scott's Building dictionary defines "circulation area, circulating area - A passage, corridor, hall, or stairway used for circulation from room to room"
and
"circulation - In planning, the proper arrangement and proportioning of areas and spaces to facilitate movement of people from room to room, their access,
communication, egress, or escape"."