You should be able to tell your joist location if your floorboards are nailed from the top. I would do this then see if it will work/your can fit down there without cutting joists.
Yeah nails are 36 cm apart so prob looking at less than 30cm to squeeze through. Unlikely.
Stop pretending it's for adults.
@chrisbmx116 started
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You should be able to tell your joist location if your floorboards are nailed from the top. I would do this then see if it will work/your can fit down there without cutting joists.