[BillFranklin]

This would be a tremendous amount of steel for the size of building they are creating.

Crude steel production in 2023: 18.88 billion mt. 20% = 3,776,000,000 metric tons.

If you just laid that on the ground in 1 meter square blocks it would cover a 481km² area (steel mass=7850 kg/m³). If you made a 1m² block tower, it would be enough to reach the moon, wrap around it, and start heading back.

Their original planned area is 26,500 square km, though this has been scaled back to 1.5km long.

I struggle to see how 481,019 m³ of steel will fit in an area 1.5km square without being the largest and tallest building ever constructed. If you just made a block of pure steel in that 1.5km square area it's going to be 320m high (about half the height of the world trade center across an area the size of 40 Manhatten blocks).