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Rainwater drainage runs


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A job I totally forgot to do was the drainage runs for my guttering to my RWH. 


I assume everything is done in 4" underground pipe the same as my foul drainage, but do I need inspection/rodding chambers at all, say on bends for any reason, seeing as it's just rainwater?





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Mine has been designed with rodding points at the far end so you can give it a push through 

you will get a fair bit of sediment from the roof

dust of tiles, bird poo, leaves. 

No ic at bends but definitely a way to get in it 

I think you can nominate to use bottle gullies with rodding points, but they are a pain to get a rod into

but then again you can always use a high pressure hose

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