Keep in mind that 13D's scope is one and two family dwellings, and anything beyond that would be 13R or 13. The AHJ may have their own ordinance like we do that only recognizes 13D and full 13 systems.
Hello
What’s your thoughts on PRV’s/regulators on 13D systems? I know 6.5.3 talks about water softener’s, etc., but what about PRV’s? I would imagine, the friction loss should be taken into consideration anyways, but should the sprinkler piping be tied in upstream of the regulator anyways to be...