Help! Need to know what these pipes are for

[GTOTURBO]

I'm trying to figure out what these pipes are for in the basement so I can get wall dimensions to accommodate it. The first questionable pipe is below the level of the concrete surrounded by moist sand and round metal casing with a square lid flush to the top of the concrete. The pipe looks like 2 inches in dia with an orange cap, which is highly unlikely to be used as a main cleanout but I may be wrong. It is directly behind a main floor drain but is not directly connected to it since the orange cap is facing the main drain and is slightly sloping away. The images I will post may explain it's peculiar position. Also about 7 and 8 feet behind this opening are the drains for what I am guessing is the toilet and sink which is probably wet vented. Sorry for all the clutter in the images and I can't seem to post larger sizes since i'm limited to 39kb per image. Please help me decipher these.

 

[Winslow]

I'm trying to figure out what these pipes are for in the basement so I can get wall dimensions to accommodate it. The first questionable pipe is below the level of the concrete surrounded by moist sand and round metal casing with a square lid flush to the top of the concrete. The pipe looks like 2 inches in dia with an orange cap, which is highly unlikely to be used as a main cleanout but I may be wrong. It is directly behind a main floor drain but is not directly connected to it since the orange cap is facing the main drain and is slightly sloping away. The images I will post may explain it's peculiar position. Also about 7 and 8 feet behind this opening are the drains for what I am guessing is the toilet and sink which is probably wet vented. Sorry for all the clutter in the images and I can't seem to post larger sizes since i'm limited to 39kb per image. Please help me decipher these.

the first one looks like a provision for a shower drain
the second looks like a waste stack
the third l& fourth ooks like a sink drain in the foreground with the toilet waste in the background

 

[Sponsor]

 

[EDJ]

I agree with Winslow, this is your future basment rough-in

 

[GTOTURBO]

Thank you for all your help! This is a great website by Terry. Thanks again winslow and edj.

 

[EDJ]

You're very welcome, again when we get feedback as to whether the advice works or not, we all learn