Chase. I designed Planthenge with a vertical sprinkler in the center. In order to get the hose through the outer circle into the inner circle, I built a chase from pressure-treated 2x6. Here, I fas- tened the top onto the sides. In hindsight, I should have fastened the sides to the top to make it a little wider.
Then I ran my hose chase from the outer circle (where I left a sin- gle pole loose) to the inner circle. Once I knew the length of my chase, I cut it to fit. I installed those final poles on top of the chase.
Make a U-shaped channel for the hose to run through.
Cut the chase to length. Be careful of fasteners.
Fasten the last pole on top of the hose chase. Toe-screws into the chase locks it together nicely.