This feat was done in the very first chapter, Ryouga performed this feat to pass a test. The feat.

Calculation[]

House: 155 px = 6 meters (2 stories)

Boulder: 167 px, 98 px = 6.46 m, 3.79 m (Radius: 1.9 m)

Volume (Cylinder): 73.26 m^3

Density: 2750 kg/m^3

Mass: 201,465 kg or 222 Tons (Class K)

KGiffoni's Advice[]

They suggested that I used a semi-ellipsoid for the volume and provided this calculator.

Other calcs that used ellipsoids I've seen had B and C equal. I already have the values calculated above.

A: 3.23 m

B: 1.9 m

C: 1.9 m

Volume: 24.421 m^3

Mass: 67,157.75 kg or 74.029 Tons (Class 100)

Conclusion[]

This was done pretty casually as he was able to run around with it on his back. 

This is a big improvement to Ryouga's base strength, which on his bio is only Class 10. He could potentially be Class M in his Burst form, considering in the profile he was 1 tier above his base. Hopefully, this will get accepted, if there are some problems in my calc point them out because I'm just starting out.