Rough In Plumbing on New Detached Garage Construction


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Old 07-12-22, 10:10 AM
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Rough In Plumbing on New Detached Garage Construction

Rough in plumbing was done yesterday detached garage with loft and I had to leave before he got started and came home to this install. Its for rough in for sink and toilet main level and, sink, toilet, shower in loft.
Im looking for some feedback on things that were done. Take a look at these photos and let me know if anything looks questionable.
Im no expert but is this layout standard practice?
The pex in the dirt with a slab to be poured on top it?
Shouldnt PEX be sleeved instead of just laying on dirt then bending it up through the eventual slab?
Wire tieing PVC to rebar?
Holes busted through the block and not sealed?
Heard him say he only had one long sweep...looks like the toilet has a short sweep?

The biggest thing that makes me question is before I left he asked" where is inspector coming from" and I told him and he said "good - i know those guys - now i know what i can get by with"






 
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Old 07-12-22, 11:25 AM
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A water or sewage line passing through a foundation wall needs to pass through a conduit or sleeve. I normally use a short piece of larger pipe. Say a foot long piece of 6" PVC mortared into the wall. Then the 4" drain line passes through it. Similar for PEX passing through the wall.

Yes, PEX can simply lay on the ground. Technically it only needs protection from sunlight. It looks like they have it passing through conduit where the slab will be located. I assume there is going to be a lot of back filling. If this will be crushed stone I would like to see the PEX protected against punctures.

Rebar holding things is pretty common. They just need a way to hold things in position so the concrete guys don't knock them over or bury them.

And most importantly, have you finalized your floorplan? Are these utilities where you want them? Spend much time on this forum and you'll see a lot of people busting out the concrete because they want to move the toilet or sink...
 
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Old 07-12-22, 12:19 PM
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Thanks for the reply PD -
Will the inspector question the short sweep 90 on the toilet (on the right in the photos)?

Pex is going to be covered/back filled with good old Virginia clay then a 4" layer of gravel then the pad. I guess I would've liked to see PVC through the wall and over with a long sweep 90 going up for the slab penetration but .... i dont know if code allows that. My thought was that if there were ever a problem with the water supply line it could be pulled out and a new one slid in.
He did put a 4" sleeve through the back wall to sleeve the 3" waste line.
I have a good finalized floor plan and strung off the main level bath from the outside walls so the plumber could set pipe. The loft bath is directly over the main level bath.
I'd be pretty upset to have to bust up concrete for my mistake but if I had to do for someone else's mistake i'd be royally p*ssed!!
Thanks for taking a look. FF
 

Last edited by FairwayFatty; 07-12-22 at 03:19 PM. Reason: Question
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Old 07-12-22, 03:30 PM
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Update:
Inspector came out today to inspect the block. The plumber didnt show up today and inspector said the plumbing wasnt capped for a water test and he will have to come back.
He told me with it capped it needs to hold water for 20 minutes.


There is a long sweep on the waste pipe on left that goes to loft bathroom but on the main level waste pipe he used a short 90.
I didn't think to ask but should the inspector question the short sweep 90 on the toilet on the right in the photos?

Also there isnt much fall on the right toilet to the main waste pipe...will the inspector put a level on anything to check fall?
 
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Old 07-13-22, 04:36 AM
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Inspectors can't check everything. If you suspect something is wrong like the slope I would check it myself.

Is your floor drain plumbed into the same drain lines as the toilet & sinks? Is that permitted in your area?
 
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Old 07-13-22, 12:15 PM
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i don't know if a short 90 is allowed under a toilet that's why i was asking but i guess it is ok as inspector came by today when i wasn't here and he passed everything including the floor drain into the same line as toilet and sink so i guess it is permitted.

I just assumed he'd pull out a tape measure or a pocket level or something at some point but haven't seen even have a tool on him or a pencil for that matter. must have everything on computer.

Im doing a time lapse video of the entire build. When looking at footage when the inspector was here the three time - footer, block and plumbing rough in. He walked around for about two minutes each time says your good to go and leaves. He did shake the vertical pipe to see if it had water in it today. I guess those three areas there is nothing to check other than by eyeball i guess.
 
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Old 07-14-22, 04:53 AM
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If you question the slope of the lines now is the time to check. It is pretty expensive to fix in the future.
 
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Old 07-19-22, 12:06 PM
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Cap or duct tape the PEX and the sink drain. A few stray rocks can cause surprising problems.

Absolutely double-check the measurements of the rough-ins. Is that a good place for a main shutoff for the water main? Bathrooms are usually pretty tight, so the shutoff in another wall is often a better choice. But you know the layout better than I do.
 
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Old 07-19-22, 03:38 PM
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Thanks for taking a look. Good or bad I sleeved the pex with some 1 1/2" PVC to protect it during the dirt/gravel backfill and if there ever is an issue I can pull the old out and "snake" in a new. The pex has got a crimped cap on it and the drain was open as it had to have another 5 feet vertically coupled to it for the water test.
The roughin's are in back wall of the bath/under stairs area and is 2X6 framed and the area wont be finished so shut off will be able to be accessed.
I hate to say it but the plumber was lazy AF and I didn't care for his work at all. He had a cordless butter *knife, cut everything by eye and never de-burred before he glued. All he had left was to cap three pipes and fill it with water but he said he'd come back the next day to do that and call the inspector but he showed back up two days later and I lost the window for the concrete finisher and now the slab pour has pushed to mid-next week.
 
 

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