There was one guy who started a build, but he didn’t update in quite a while, you can find it here: 1” EMT conduit Primo XL project 1.163”/29.5mm
If you want it to be that big, you should go for a lowrider, because you could support X and Y, but not the conduit that carries the router itself. This might be a big problem.
There were also people who tried to make it more durable by filling it with concrete and the such, you can find it here: Concrete filled tubing