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Lisa06
201 Posts
Lisa06
201 Posts
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Lisa06

Joined 10 July 2019
Bronze Member
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2 months2 monthsLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Hi SaveH20,
In the above scenario, we reduced a 90mm overflow (on a 2500L water tank) to a 50mm PVC pipe. We buried the PVC pipe 100mm underground, then brought…

12 months12 monthsLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Such a helpful response - thank you. I learned a lot from what you shared and saved the post for future reference.
What you’ve outlined (best practice tips)…

12 months12 monthsLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Hi SaveH20,
I have a random question for you please...
Our water tanks (the three of them) have inlet screens that sit at an angle on the water tanks. But I've…

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

That's very helpful - thank you.

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

I have another question for your please...
Instead of reducing the overflow pipe from 90mm to 50mm just below the overflow outlet, we were thinking of sticking to a 90mm overflow…

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Thanks - I'll purchase several different degree bends and see what works best.
I tried heating up a 50mm pipe using a hairdryer today! I can't say I succeeded. …

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Ah yes, you’re right - makes sense (thank you). I should have figured that out myself.
Thanks, I’ll go with an 88 degree bend and a 15 degree bend. …

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

The timber around the tanks is H4 sleepers. I don’t believe they should rot.
I don’t understand why I need two 45s. I am going to set up the overflow as…

Using tank overflow for drip irrigation
1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

I thought of drilling holes in the wood, too. It might actually work ok because the land falls away from the tank base and into a garden of trees.
Thank…

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Ok, I’ll use the reducer you recommended.
Ok, we will bury the 50mm pipe. How deep do you think it would need to be buried to make it safe to go…

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Thank you - that's super helpful.
Should I use this reducer:

Or this one?

If we left the 50mm DWV pipe on the ground surface (instead of burying it), would we be able…

1 year1 yearLisa06Lisa06 posted:
Using tank overflow for drip irrigation

Hi SaveH2O,
I realise this is an old thread but I have a related question please.
We purchased a small water tank (2500L) for our animal barn (roof = 26m2). Water…

1 year1 yearLisa06Lisa06 posted:
What should land fall be for drainage?

That's very helpful, thank you. I was mostly interested in knowing if a spoon drain requires a specific slope, but I appreciate the extra information.

1 year1 yearLisa06Lisa06 posted:
What should land fall be for drainage?

Do you mean land slope for open surface drainage or pipe slope for subsurface stormwater drainage?[/
I would love to know both please. Thanks

1 year1 yearLisa06Lisa06 posted:
What should land fall be for drainage?

Hi,
What is the absolute minimum fall land should have for sufficient rain water drainage?
Thanks.

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

groundzero We are going to start with the trench along the neighbours boundary, as suggested (we organised someone to do it for us).…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

groundzero Could you please share your thoughts on the following:

If we installed a cut off drain along the neighbour's entire fence line (in…

Wall cracks, building footpath as per CSIRO BTF18
1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

We would manage it if it was installed. But it never was. The land was never graded away from our property, nor were temporary downpipes used.

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

Yes, it looks amazing, but we won't be paying for that. Surface drainage on highly reactive soil is the responsibility of the builder.

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

Tried digging a small pit in the animal paddock and it was impossible! Ground is as hard as a rock. Will attempt it again after some rain. …

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

I will do, thanks. We are in the Western suburbs of Melbourne.

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

If we had built this house, we would have done things very differently. But we are the second owners, and we're just trying to do our best with a…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

I agree that a cutoff drain would be better than a spoon drain near our neighbour’s fence line.
What is the difference between fill versus natural topsoil over natural clay? …

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

That makes sense - thank you.
The animal paddock is ours. It's about 30m wide, so that's roughly the distance between the neighbour's fenceline and our house.
I will carry out…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

That diagram is very helpful - thank you.
I don’t understand what the cutoff drain in the animal paddock is for? Is that to stop the neighbour’s water from approaching…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

I’m sorry the link doesn’t work - I just double checked it and it should work. I’ll try uploading a picture.
Thanks so much for that very helpful information. It makes…

Wall cracks, building footpath as per CSIRO BTF18
1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

Great diagram - thank you.
So are you saying the trench could be backfilled with soil (+ sand/gravel) and we could omit the agi pipe? How would we get the…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

That looks brilliant and it makes perfect sense, but I wonder how much something like that will cost us?
Does the crushed rock above the agi pipe have to remain crushed…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

Our soil report states H2/P. So I guess it's both?
Do you mean that at the end of the builders plastic the agi pipe would have to drop 600-600mm into…

1 year1 yearLisa06Lisa06 posted:
Wall cracks, building footpath as per CSIRO BTF18

Geotech report states approx 500mm fill and 500-1800mm clay

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