Ok fellas, after spending an afternoon digging holes in my back yard, I've found a pipe system but don't know if it is sewerage or stormwater.
I dug a hole where the plans indicated the stormwater should be; found a pipe. Then I check the drainage plans and the angle of the pipe run indicates is could be sewerage.
The pipe I found appears to be concrete.
What is the difference between a stormwater pipe and a sewerage pipe in a house built in Canberra in 1972? Is the sewerage a terracotta style pipe ?