Dear Tech Abby:  Do I have to use a crushed stone backfill for my PVC sewer pipe installation?  --That 70’s EngineerDear That 70’s Engineer:  Good question… the

As a corrugated metal pipe culvert or storm sewer ages, it is common for the invert to bear the brunt of the corrosion and abrasion damage.   Paving the invert

All too often I am reminded of the American industrialist, J. Paul Getty’s quote, “In times of rapid change, experience could be your worst enemy.”  Even though

Resistivity has to be one of my top ten favorite words used in the engineering community, and today I would like to dive a little deeper into how important this

After WWII and the Korean War there was an explosion of residential and commercial building along with sanitary sewer across our country.  With all the new building construction, there was a desire to find a more reliable sanitary sewer product than Vitrified Clay Pipe and Reinforced Concrete Pipe.