Tie-Wrap Poly Lines in the Same Trench?
My system has 12 zones with 4 zone valves per valve box. When running 3/4" poly pipe from the 3 valve boxes out to the sprinkler heads, the 4 lines exiting the boxes will be run in the same trench initially. Question: With 4 poly lines in each trench, would it be a good idea (or not) to loosely tie-wrap them together every 10 feet or so? Trench depth is about 12" max. in a freezing locale. What about further away where there are only 2 or 3 lines in a trench? Tie-wrap or not?