How to make polyline from walls(I want to know the area of inside walls)

Hi, Experts!!
I want to know the area of inside walls.
Could you teach me how to make an area of inside walls?
I couldn’t make a polycurve of inside walls from walls/

Hi @shimizu3L5L3 show us what you have tried so far and we can try give some possible solutions

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Thank you replying!!!
I tried what get a finishing wall’s length at first and then make a polycurve by that length. after that make a surface by using the polycurve.
I couldn’t figure out it…
Thank you so much for helping me many times.


内法面積(未完成).dyn (20.5 KB)

if you have rooms or spaces these could give you the wall area in room…if you want the whole wall area [walls can be in many rooms] clockwork have some great nodes for that…rooms finished node or room boundery node or try genius loci element surface reference node as sort by interior and exterior layers /surfaces

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ps or just get the room boundery curve and extrude as surface

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Thank you responding so fast!
I want to make an area or room from finishing walls on Dynamo by automatically.
I’ll try to use clockwork and genius loci.