Basement Bath rough-in with Diagram

[BriTex]

Hello,
this is top view of layout. short distances with mostly 4" pipe, 2" shower trap arm enters top of 4", 2" vent lines on pump tank and after sink. Will this work? ( its difficult to add a shower vent).

 

[hj]

No matter how "difficult" it will be the shower DOES need a vent.

 

[Sponsor]

 

[Terry]

The shower needs a vent, badly!
The toilet will siphon that trap everytime, and the smell from that pump is going to be horrid.

 

[BriTex]

OK, thanks.....better safe than sorry, i'll break out more of 8" slab and put a? will a 1 1/2" vent work? or does it need to be 2"?
new question: would a 2" trap/floor drain between tank and shower (w/ no extra vent) be a problem?

 

[BriTex]

here's a new diagram

 

[hj]

Same problem that the shower had when it did not have a vent. You CANNOT connect things to a toilet's discharge without having its own vent.

 

[Asktom]

The vent must be between the shower trap and the connection to the toilet discharge.