Giant Question

[larsdangly]

Originally Posted by xane

As surface area quadruples when size doubles, it seems reasonable that eventually a creature becomes so large that full steel armour will become too heavy for it to move.

But note body weight goes as the cube of linear size; if the premise is that giant things have body plans/compositions similar to their normal sized relatives, then you should assume a 10-12' tall humanoid is 8x the ST of a 5-6' tall humanoid, but that their armor only weighs 4x as much, so is easier to carry.