So to reverse-engineer the current border of 8-C.
It's at 1,046,000,000 joules, divided by 8 j/cc gives 130,750,000 cubic centimeters destroyed.
Assuming 80% hollowness the actual building volume would need to be 5x higher, 653,750,000 cubic centimeters, or 653.75 cubic meters.
As Cin did, assuming a two-story house where each story is 18 feet, would require each floor to be around 60 square meters (precisely 59.579141149 m^2), or roughly 641 square feet (precisely 641.30453803234).
So working backwards, it's based off a two-story building, with each story being 18 feet tall, with a square footage of 641.30453803234
Oddly, this seems to give a smaller result than Cin's calculation despite having larger values for the size of the floors, so I've tried to redo Cin's calculation and it seems off.
| 8-C, let's use a standard 2-story house with 625 square feet on each floor, about 16 to 18 feet tall as well. converted to meters, the volume would be 929.0304m^3 |
This is wrong.
625 square feet is 58.0644m^2,
18 feet tall is 5.4864m.
Multiplied together it gives a volume of 318.5645 m^3. Since this is just one story, for two stories it gives 637.129 M^3, still a fair bit off from your value. What happened here?