D&D 5E Magic item weights aren't listed in DMG

[Nergal Pendragon]

The listed racial factors for build are Halflings x 1.5, Dwarves x 1.77, Orcs x 1.3, Elves x 0.75

These are applied as a modifier to the final result.

Ogres are pretty portly in the illustrations, I assume they would be heavier than a normal build, not lighter.

Is it possible they're using a different muscular base than humanity uses? Humans are primates, which tend to be pretty dense in muscle construction. A species using a less dense muscular system with a different set-up might be able to get far more power out of it than humans do. Add in the existence of magic and some of the energy problems that crop up might simply not be an issue.

 

[Scorpio616]

Looks like 3.5 got close with the stone golem using these formulas. The clay golem though, little less than half what it should be (if you figure the average large clay golem stands 8 feet tall).

Is this Kilned clay or Wet clay?