a sag is when you bend a pipe down in order to fit the contour of your ditch you are putting into. when you run your pipe across the pipe line you install up to and going away from a creek. when you are ready to install in the creek you first have to figure the sag to bend to in order to meet...
If sags at creek crossings are continually coming up too strong what would be the probable cause? My engineer seems to not have trouble with normal sags along the line but when we get to a creek crossing tie in they always come up strong. What are the normal procedures to figure the sag at a tie in?