New shop

[CADplans]

When I poured my shop, I added a half dozen or so extra 2 inch electrical conduits under the concrete,,
I wanted the capability to run electrical under the floor, rather than overhead.

I also added two conduits for possible propane lines, and I even added a 1/2" conduit for TV antenna, and land line phone wire,,
(that was 20 years ago)

I have used about half the electrical conduits,,
it is nice to be able to have the capability to upgrade simply,,,the conduit is cheap,,, before the concrete is poured,,,

[Oak]

Originally Posted by cooperino

You said your not a plumber so I will throw this out there. Did you pressure test all your PVC? And is your pitch correct. I go 1/4 inch per foot whenever possible

Thanks, Coop.

I didn't pressure test these lines yet because I'm not complete but I will probably only fill them with water to test for leaks because these are for grey water only. I used DWV fittings on this side but I'm thinking that I will use the pressure type on the apartment side. My buddy in the septic business said that all builders here use DWV for drain lines but he preferred to use the 2" pressure type fittings because they have a larger area to glue.

Yes, all lines slope 1/4" per foot towards the outlet and nothing is smaller than 2" under the slab.

[Oak]

Originally Posted by CADplans

When I poured my shop, I added a half dozen or so extra 2 inch electrical conduits under the concrete,,
I wanted the capability to run electrical under the floor, rather than overhead.

I also added two conduits for possible propane lines, and I even added a 1/2" conduit for TV antenna, and land line phone wire,,
(that was 20 years ago)

I have used about half the electrical conduits,,
it is nice to be able to have the capability to upgrade simply,,,the conduit is cheap,,, before the concrete is poured,,,

Thanks, Cad.

Yes, I'm probably going to be adding a few extra conduits and also a schedule 40 pipe to sleeve the main water into the building.

[cooperino]

Originally Posted by Oak

Thanks, Coop.

I didn't pressure test these lines yet because I'm not complete but I will probably only fill them with water to test for leaks because these are for grey water only. I used DWV fittings on this side but I'm thinking that I will use the pressure type on the apartment side. My buddy in the septic business said that all builders here use DWV for drain lines but he preferred to use the 2" pressure type fittings because they have a larger area to glue.

Yes, all lines slope 1/4" per foot towards the outlet and nothing is smaller than 2" under the slab.

With all that pipe it can be difficult checking with water only especially if its real small. A tiny leak will only get worse, never better over time. I would fill the system with water. Make up a cap with a air compressor fitting in it. Pressurize with 30 PSI or so. This way you will definitely find a leak if there is one. I know it drain only but last thing ya want is a leak even from gray water under your slab. Anyway, It looks really good. Great job!

[darkminion_17]

I see one vent by the sink, is there another?

[Oak]

Thanks Lew. I'm thinking that each branch to the sinks can be used as a vent line for the floor drains? Those lines will go up through the roof.

[J-Mech]

Originally Posted by Oak

Thanks Lew. I'm thinking that each branch to the sinks can be used as a vent line for the floor drains? Those lines will go up through the roof.

If they dump into the top of the floor drain lines, you can use them as a vent. If the come into the side, no.

[Oak]

This is how I ran them.

drain.jpg

The red arrows are going to the sink/vent lines. Basically the vent going to the roof will have a sanitary tee cut in so that I can drain a sink in that line.

The white arrow is about where that pipe will be cut and it will go into the drain box in the floor

The green arrow is the trap for the floor drain

The pink arrow is the trap primer line

The grey arrow is the outlet to the septic tank. By code it must go to your tank.......sure it does Mr. Inspector.

[J-Mech]

That isn't going to work for a vent then.

[Oak]

Why do you say?