User blog:ThePerpetual/Request 13: Collapsing A Floor



"King Flareflesh is capable of making an entire floor made to stone bricks fall into a lava pit underneath by just shouting "GROUND FALL!" as a magic spell. The floor area is shaped like a circle and it's a 30 metre radius. The only parts of the floor that doesn't fall is the area that is surrounded by a invisible wall and here is a photo of that here. It's four metres from one side of the wall to the other."

- The request thread

So, area of a 30 meter circle (2827.43 m^2) minus the area of a 4 meter circle (50.27 m^2) is 2777.16 m^2

I hear that the height of a single brick is in the realm of 70 mm (or, 0.07 meters, or a bit under 3 inches), so even if this was a shallow/relatively thin floor it would probably have to be at least that thick

So, 2777.16 * 0.07 = 194.4012 m^3, or 194401200 cubic centimeters

This only sounds like ordinary fragmentation, unfortunately, so

194401200 cc * 8 J/cc = 1555209600 Joules

But there's the 30 and 10 second timeframes to divide the result by, too, since attacks that must be sustained over time don't really work for KE in that way.

1555209600 / 30 = 51840320 Joules, or 0.012 Tons of TNT. Small Building level,

1555209600 / 10 = 155520960 Joules, or 0.037 Tons of TNT. Small Building level,

...yeah, not exactly super high. Ah well.

Final Result
Floor Collapse
 * Normal: 0.012 Tons of TNT
 * Berserk: 0.037 Tons of TNT