This is a new requirement for me. I'm used to draining pools with a submersible pump into a cleanout, but it appears the City wants to have a dedicated drain to the sewer. Is there a standard way of accomplishing this? I was going to use the 1" discharge line of a Jacuzzi JMC16 pre-filter to discharge into the drain. The drain is 2" PVC with a P-Trap (City Requirement) draining at 2% and tied into the house sewer sub-lateral. Problem is, he wants me to show an engineering calculation to prove that the discharge flow rate won't overwhelm the drain line and I'm not sure how to do that. Nobody I've asked has any idea what I'm talking about, so I think there must be a more standard solution to this. Anybody have any clues?
New Pool - Sanitation Department wants an engineering calculation showing that I won't overwhelm the flow rate of a 2" backwash drain?
- Thread starter jdmpoolguy
- Start date
- Jun 22, 2014
- 52,028
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Welcome to TFP! 
I'm going to ask @1poolman1 if he is aware of this rule. He's from the SAC area, but may be able to help.
Enjoy the forum.
I'm going to ask @1poolman1 if he is aware of this rule. He's from the SAC area, but may be able to help.Enjoy the forum.
New to me. Never heard of that type of requirement.Welcome to TFP!
Enjoy the forum.
- Jun 7, 2017
- 9,978
- Pool Size
- 29000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
Is this only required if you use a DE or sand filter? If so, switch to cartridge.