User blog:Gwynbleiddd/Bleach calc - Liones' Resurreccion

Window = 3 px ~ 1 m

height of cylinder = 803 px = 267.7 m

diameter of cylinder = 157 px = 52.3 m

radius = 26.15

Volume of cylinder = π*r^2*h

V = 575 097,7 m^3

Q = m*c*ΔΤ

Q = ρ*V*c*ΔΤ

Values taken from this blog

ρ = 0.27 kg/m^3

c = 1000 J/kg*K

ΔΤ ~ 1000 Κ

Q = 1.55*1011 Joules (37.1 Tons of TNT) City Block level

Ikkaku defeated this guy with his Bankai while being at 20% of his power.Which means that Ikkaku is in reality 5 times stronger than that, which is 185.5 Tons of TNT for Ikkaku's Bankai (Multi-City Block level).

Should be noted though that Ikkaku's bankai was destroyed during his fight with Liones so low end 8-A is the limit for Ikkaku at that point.

Note: Another calc for the same feat can be found here.