Bathroom DIY: is this kosher?

[SMatthew]

Greetings!
After removing my shower basin, I found this situation: black ABS, with no visible p-trap. I dug it down to where it looks like the plastic is coupled to the original line with a rubber compression fitting.
I know I can endoscope or just dig down further to confirm the presence of a p-trap…but I’m not sure if the distance from the shower drain and the current configuration would be a problem.
I read that the trap can’t be more than 24” vertically from the drain and should be less than about the same, horizontally.
If the presence of the trap is confirmed, could I get away with using the setup, as it is? Or should I have it rebuilt with the trap moved more under the drain (which is what would have to happen if I find that there isn’t a trap, anyway)?
FWIW, the house was built in 1955, the last guy did what I just

tore out in 2006, and we never had any sewer smells come up through the shower in the seven years before tearing it all up.
Thanks, in advance, for any and all feedback.
It is appreciated.

 

[SMatthew]

 

[Sponsor]

 

[CENTRALFL]

Is the rubber coupler removable such that you can see if there's pooled water at the bottom?

Here's a similar thread: https://terrylove.com/forums/index.php?threads/offset-p-trap-ok.107391/

As I recall, the main deal with having too much vertical distance is due to not wanting water to fall so fast that it pushes out the P trap water. Unsure the full reasoning for the horizontal limit, but have read that horizontal runs tend to smell from accumulation of shower residue.

 

[SMatthew]

Is the rubber coupler removable such that you can see if there's pooled water at the bottom?

Here's a similar thread: https://terrylove.com/forums/index.php?threads/offset-p-trap-ok.107391/

As I recall, the main deal with having too much vertical distance is due to not wanting water to fall so fast that it pushes out the P trap water. Unsure the full reasoning for the horizontal limit, but have read that horizontal runs tend to smell from accumulation of shower residue.

Is the rubber coupler removable such that you can see if there's pooled water at the bottom?

Here's a similar thread: https://terrylove.com/forums/index.php?threads/offset-p-trap-ok.107391/

As I recall, the main deal with having too much vertical distance is due to not wanting water to fall so fast that it pushes out the P trap water. Unsure the full reasoning for the horizontal limit, but have read that horizontal runs tend to smell from accumulation of shower residue.

Thanks for the reply.
I can definitely do that. As the horizontal run is just around a foot, I guess I can get away with keeping that…I mean, smells weren’t ever really a problem in all of the years before I tore everything out.
Cautiously optimistic that there’s a trap down there and I can get this project back on track without having to reconfigure everything.
-Cheers.