Thanks again for your comprehensive reply SaveH20.
I've had a bit of time to think about it and found a bit of inspiration from an Ohio Dept. of Health document regarding…

I've looked around for a suitable way to minimise sediment for my system (dry piping with sunken cistern) but recommendations of first flush systems would be a bit impractical as…

So for the bellmouth you've shown, I continue that horizontal pipe out of the tank below grade all the way (at slope of 0% or slightly downward slope)? What I…

After I posted I realised that the sediment trap might not be the best idea, there wouldn't be the pressure of the sitting water to flush through the smaller sediment…

We measured the drop from the house ground level to where we roughly planned the tank location, only a drop of about 0.8m. The builder would prefer to build an…

Thanks for the fast response - I'm a bit lost on your last line about not wanting to create even a short duration syphonic effect. I thought you'd want…

Sorry with all these gradual questions but trying to finish this design with two young kids underfoot and not much sleep...
So I've been looking at my tank overflow and now…

Thanks SaveH2O
Unfortunately the builder already has the 90mm DWV downpipes on site, but I might see if I can get him to change just a few to 100mm (the ones…

I've seen mentioned a few times that the tank inlet should be at least 300mm below the bottom of the leaf eater/ rainhead. If I calculate friction losses for about…

FRP is Fibre Reinforced Plastic I believe, about halfway they list "Composition:
"Fundamental composition of FRP modeling sheet: mixtures such as unsaturated polyester resin, thickener (MgO), initiator (curing agent),…

Hi SaveH2O
Thanks again for your replies, you're giving me much more confidence about this system.
Noted about being careful about the head levels; the measurements I take should be from the…

Tanks of 100kL size are very expensive here. First quote I got was about AUD $35k.
My builder has suggested (he'd like his guys to remain in work so eager to…

Thanks again SaveH2O.
I’ve been working through my calculations and this is what I’ve come up with. Can you let me know if I’m on the right track?
If I use the…

Thank you SaveH2O for your valued response.
I’ve learnt pretty much everything from your replies here and on the ATA website. The Texas AgriLife Extension also has some good info but…

Hi SaveH20! Thanks for chiming in, thought I wasn't going to get any replies for a while!
Yep the ground moved for us, though at the moment we are up…

Hello
Please excuse the length of this post!
Hoping to get some advice/checking of my calculations for my house build here in the Philippines. I know these are Australian forums but I’m…