I'm looking for a 3D utility rule file to generate subterranean infrastructure that is featured in this youtube video: Rule of the Week 4: Manhole - YouTube
I created my own simple rule for pipelines using graph features with freeway parameters (see screenshot attached):
version "2017.1"
attr angle = 20
attr colour = "#FF007F"
@StartRule
Pipe --> extrude(0.5)
color(colour) Mass
Mass --> comp(f) { side: Side | all: X }
Side -->
roofGable(angle)
roofGable(angle * 1.125)
X -->
roofGable(angle)
roofGable(angle * 1.125)