
Originally Posted by
sgc
Well, the Ancients wouldn't have any way of knowing for sure that there was naquadah out there, so maybe the gates can be made of any superconductive element, where not all of them have naquadah, some are completely naquadah, and some are a mix. The seed ships prefer the naquadah, but if there isn't any right there, it takes whatever elements will be suitable and then mix them with the naquadah, to even the build quality.
@Starsaber: Maybe they did, or there was a different craft built specifically to do that job. The gates could be set up in the ramp (they are probably built in the ramp, or the ramp is built around the gate) and then dropped from a low altitude and make it settle nicely in the most viable position.