Hi is 15 ml blue metal as good as 20ml blue metal as drainage does the 20ml drain faster than the 15ml and is it too heavy for the agi pipe.

Hi Dave, Thank you for your info. I am not doing this myself however tradies have different ideas. The one I think would be best to collect water com ...

I have been told it is not necessary to cement because they would have 20ml blue metal all around them which would hold them in place as well as the a ...

Sorry to bother you again but one of the tradesman said by law they had to use heavy orange plastic around the agi pipe this wasn't suggested by othe ...

If the agi pipe is running through the pits eg ---------------@----------------@----------------@---------------@ the @ is for the pit and the - is ag ...

Could you advise me on the size of a pit approx 350 to 400 and does it have to be cemented ?

Hi, Of course a tradesperson will do the job not by myself

Hi Jacob, Still getting quotes. Think th way to go is the 250/300x250/300 trench with 20ml blue metal then agi pipe then drainage mat then blue metal ...