Hi. I'm sorry to bother you but Antvasima suggested to ask some calc group member if they are interested in some calcs, so I'm leaving this message on many calc group members' walls.
There's currently a Medaka Box tier revision ongoing and there are two feats that may help rescaling the characters. You can find both of them here. If you're interested in calculating one of them I would appreciate if you could comment on that thread. If you're not please ignore this message.
Well, if the guy is at the very end of the crater (like, in the wall), then I believe you can use angular sizing to find the distance he is away from diameter of the crater (Using the height of the crater and his height, I presume).
EDIT: If the guy in the crater is far from the diameter, then you should find the diameter from the guy right in front of it, probably.
Hey, you remember Jiro's calc? I recalced the feat by using the distance in the third scan, so now it needs to be accepted again, can you evaluate these two calcs please? Although the second calc is quite easy.
I was informed of this by the person requesting the calculation, too.
Problem is that the detonation speed calculator only has a small selection of materials to base velocities off of. I would've chose Nitroglycerin (which should be identical to the one the bomb used), but I ultimately went with TNT due to one of the comments regarding it as similar to most explosives.