Basin waste into shower waste

[algas]

As per title is it ok to tee the basin waste into the shower waste, total run of waste from shower to soil pipe about 2 mtrs with min fall, part of me says 2 seperate wastes as basin may pull shower trap (mira flight) other part thinks the speed of the water from the fall from the basin will help to keep shower waste clear. any ideas!
TIA Alan

 

[just pumps]

2 seperate pipes for me.

 

[denso13]

As above, separate is a better job.

 

[Madrab]

+2, if at all possible separate. If not always best to increase size of pipe by 1 at each additional waste connection.

Fall should be set as close to optimal to ensure reasonable flow with minimal noise and aid in self cleaning.

 

[Deleted member 292770]

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[algas]

2 pipies it is then, as its going into a stack with a Durgo it could possibly pull the shower trap