[–] Grospoliner 0 points 0 points 0 points (+0|-0) 1.5 years ago
If its a standard floor or roof slab, then it's 3-4 inches of reinforced concrete. That metal cylinder in the photos isn't going to punch a hole through that if simply dropped from an aircraft at any altitude. A wood roof? Perhaps. Not RC though.
[–] Grospoliner ago
If its a standard floor or roof slab, then it's 3-4 inches of reinforced concrete. That metal cylinder in the photos isn't going to punch a hole through that if simply dropped from an aircraft at any altitude. A wood roof? Perhaps. Not RC though.