Tips with routing bath waste pipe?

[stoobloo]

I need to get the bath waste pipe from the pipe popping up through the floor boards, across to roughly where the red box of rawl plugs is (for the bath waste connection).

How do you plan/go about this? I know I need to know where the bath feet are going and have nothing clashing. Is it best to have the bath in position when working this out. Everything online is about connecting bath wastes, not the actual '2nd fix' aspect of getting it to where the 1st fix waste pipe is?

Any tips or advice would be great.

Would any of the routes shown be okay providing there's adequate fall (1 in 40)? Are bends okay? Want to do it the best I can.

 

[Madrab]

Put the bath in and level it up and set it at the height for your bath panel - that'll show you where you will be able to run the waste pipe and still provide enough fall to ensure it drain properly and is self cleaning. usually the run would come out to the side straight down then into the outflow but that will all be determined by the type of legs/feet/cradle the bath uses.

You have placed the plywood I presume - the stabilise or strengthen the floor.

The trouble you may find is getting enough fall on the waste pipe from the trap to that section dropping into the floor and it may have to go lower. you want at least 20mm per/m of pipe run. The ideal would be ~40mm per/m

 

[Madrab]

Just as an addition - yes bends are ok, ideally though use swept bends.

Your 1:40 is really the min you want.