Gabions as railings for rooftop terraces. Looking for helpful tips

The weight. If there is no load-bearing wall under the gabions, you are putting about 3 tons of mass on the edge/corner of the reinforced concrete ceiling - for that, I would at least foolishly consult a structural engineer to see if that works without problems or if the coating can handle it.

Best regards
Dirk Grafe

Hello again,

that's right! I forgot to mention that beforehand. We have already checked the density etc. of the stones. The 4.50m side is completely on a wall. The 2.00m side is about 40cm next to the wall. Over a length of 200cm at 100cm height and 20cm width, this results in a weight of about 400kg.

Best regards