User blog:Gwynbleiddd/Bleach calc - Ichigo's Shikai slashes

First image

Ichigo's head = 111 px ~ 22 cm

Zangetsu = 588 px = 116.5 cm

Second image

Zangetsu = 69 px = 116.5 cm

Wall thickness = 127 px = 214.4 cm

width = 254 px = 4.28.9 cm

Third image

Ichigo's foot = 9 px ~ 26 cm

height of wall = 199 px = 575 cm

Volume = height*thickness*width

V = 52 874 792 cm^3

Using violent fragmentation (69 j/cc)

E = 3.65*109 Joules (872 kg TNT) Building level

Using pulverization (214 j/cc)

E = 1.13*1010 Joules (2.7 Tons of TNT) Large Building level

During this fight Ikkaku was able to hold his against Ichigo for a while, though Ichigo was able to damage his zanpakuto and later cut his Shikai in half.So i would say that Ikkaku should scale to a lower end of Building level.

Renji also scales to that since he was able to overpower Ichigo before Ichigo used Getsuga Tenso.