User blog:Muhammedmco/Busou Renkin - Buttrefly Bomb

Introduction
Feat in Question.

Calc
Warehouses reach up to 27.5 feet, or 8.382 meters.

Warehouse = 143 px.

8.382/143 = 0.05861538462 m/px.

Diameter of explosion = 667 px = 39.09646154 meters.

Radius of explosion = 19.54823077 meters.

They were at ground level, so...

P = 20 psi or 1.37895 bars.

W = R^3*((27136*P + 8649)^(1/2)/13568 - 93/13568)^2

W = 0.6003546616 Tons of TNT (Building level)

Pretty lackluster compared to other calcs...

Conclusion
Butterfly Bomb = 0.6003546616 Tons of TNT (Building level)