I spent 32 years doing water & waste water planning for small communities, so have a bunch of stories about water system freezing screw-ups. Probably the one that shows how important it is that prior planning is necessary follows.
In most of our part of the world, water & sewer lines need at least 6' of coverage to the top of the pipe to prevent freezing. One city put in many blocks of new water & sewer lines in existing gravel streets without much engineering assistance. (After all, it was just replacing old stuff with new, no problem our staff can do it without a contractor or engineer.)
Several years later the council decided to do a drainage study & pave & gutter all streets for surface drainage. First winter after the job was done, they ended up with several streets that had frozen water lines where freezing had never been a problem before. To make surface drainage system work, some street surfaces had to be lowered by a couple of feet. Subsequently, not enough cover was left on them to prevent freezing. Big expensive mess to solve a problem that could have been prevented with just a little foresite!
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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