Shower Waste Pipe - Is a Fall and then a Rise a problem?

[TyrannosaurusTex]

Can I have a fall and then a rise in the waste pipe that takes water away from a shower tray? I've tested it by using a watering can to pour water into the shower tray and it all seems to run away fine. However, by having a drop of a couple of inches in the pipe before it rises again, along with a couple of angles that accompany the drop and the rise, am I storing up trouble for the future (e.g. collection of debris in the low angles)? If you are wondering why I'm doing it like this, I'm trying to get the waste pipe away in a fairly constricted space. Thanks.


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[Newboy]

If you don't have a constant fall on the waste pipe then eventually all the crud will collect in the dip.

In short, you're building in a future problem

 

[muggles]

It'll block up if you do that

 

[TyrannosaurusTex]

Thanks very much for the responses, confirms my concerns. Have found an adjustable compression elbow in Wickes which might allow me to get the waste pipe to the trap without creating a fall. Will give a it try tomorrow night. Thanks again.

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