Board Thread:Suggestions forum/@comment-2A02:C7D:5DBE:BA00:C585:CC6C:9381:9986-20170731123313/@comment-32736334-20170802162155

All the basic seige weapons would have used different pieces of technologie variying from wheels, to bolts that would have been used to create the power a catapult or trebuchet or even ballistas.

The dwarfs had good understanding of cranes and how to make them strong to lift peices up, and would have also used a lift type structure to lower themselves down furthur into their mines ( as shown within the hobbit)