During installation, set sprinkler heads stage with the soil floor, align arcs faraway from hardscape

https://drive.google.com/drive/folders/1V1BvsDhSmPP4BWFuGpjyjlJFjgvXXJXu?usp=sharing

During set up, set sprinkler heads stage with the soil floor, align arcs far from hardscape, and flush strains before attaching nozzles to sidestep trapped particles cutting functionality.