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SaveH2O
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SaveH2O

Melbourne
Joined 11 August 2011
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4 h4 hSaveH2OSaveH2O posted:
Rain Garden Cost- HELP!!

Just measure it, use mortar lines as the line of sight and ask someone to hold a stick with some graduated marks on it at the kerb.
The builder has…

6 h6 hSaveH2OSaveH2O posted:
Rain Garden Cost- HELP!!

Just saw the edit. Can you post the height difference between the bottom of the gutter and the LPOD?

6 h6 hSaveH2OSaveH2O posted:
Rain Garden Cost- HELP!!

It depends on what the council will accept, a retention and detention system is best but that depends on the site gradient (hydraulic calculations) and then the aesthetics. Given the…

8 h8 hSaveH2OSaveH2O posted:
Rain Garden Cost- HELP!!

The plans are difficult to read and there are no hydraulic calculations shown or if they are, I can't read them.
If the 5,000L tank is purely for detention, the price…

3 d3 dSaveH2OSaveH2O posted:
Breaks in Drainage Pipe

Plenty of examples to the contrary on this and other forums unfortunately.

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3 d3 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

That's right.
You can have a tank that is partially dug in though, nothing wrong with that. Easier and cheaper too.

4 d4 dSaveH2OSaveH2O posted:
Downpipes enter the ground in two different ways

Stormwater pipes don't run alongside a slab due to the angle of repose requirement for trenching.
The first downpipe will be plumbed the same way as the second, if you…

4 d4 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

A tank has an overflow pipe regardless of whether the tank is above ground (unless it is supplied by Supadivertas) or sub surface. A bell mouth could sit lower than…

4 d4 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

If you use leaf diverters, you can use a low restriction inlet that will supplement the flow rate to an above ground tank.
A sub surface tank's overflow will need…

6 d6 dSaveH2OSaveH2O posted:
Australian Standards

The Australian Standards are produced by a private company but a lot of persons mistakenly believe that they are produced by a government body. As such, they have to be…

6 d6 dSaveH2OSaveH2O posted:
Australian Standards

I often see answers given on these forums that often wrongly refer to or quote Australian Standards or referencing 'Guides' published by industry and regulatory bodies.
Australian Standards are produced…

7 d7 dSaveH2OSaveH2O posted:
Rainwater location (new build)

What are the tank's dimensions and are you at the behest of Eden Brae as to what you have? If not, you have many other options.

7 d7 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

Both.

The bell mouth could potentially provide enough water and turbulence in your system to generate an occasional syphonic pulse down a longer vertical pipe. If so, the…

7 d7 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

The standards were updated in 2015 but the relevant information is the same.
A tank's mitigation capacity is critical when there is a statistical probability of the inflow exceeding the…

8 d8 dSaveH2OSaveH2O posted:
Need urgent advice...

Ask your builder how long the electrician has worked for him, say why you have no confidence in the electrician and then discuss the builder's options.
Are you using an…

9 d9 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

I am glad that you have asked about this and your question also reinforces that you have a good understanding of proper design.
It is an irresponsible and unknowledgeable figure that…

11 d11 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

Round tanks are inherently stronger than square tanks. You may need to talk to an engineer if you are considering that option.
They build the bigger round tanks on site here…

11 d11 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

Your 1:20 5 minute intensity is mind blowing. We had a 1:500 a few years ago which flooded parts of Melbourne, it was quite an extraordinary event.
Your gutters will…

11 d11 dSaveH2OSaveH2O posted:
Yellow-ish water from rainwater tank

The photos are great, thanks. If you are not sure of any of the terms I use, just ask and I will explain.

Photos 1, 3, 4 and 5 show…

15 d15 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

The ARIs are a measure of rain intensity and you are correct with your figures apart from the wrong application of the multiplier when determining the total amount of water…

15 d15 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

Your posted information shows that you have a very good understanding of best practice. Best practice isn't involved nor should it be expensive, in fact it is frequently cheaper.

17 d17 dSaveH2OSaveH2O posted:
Gutters and downpipe requirements

Yes, gutters are allowed to retain up to 10mm of water for 3 days after the last rainfall and be deemed compliant despite eaves gutters needing to slope.

17 d17 dSaveH2OSaveH2O posted:
Gutters and downpipe requirements

An upper roof area drained to a lower roof area plus any abutting walls that provide additional run off during wind driven rain must be added to a lower roof…

18 d18 dSaveH2OSaveH2O posted:
Gutters and downpipe requirements

I don't have the time right now to give a full reply and there is another thread that has been waiting nearly a week for a reply that has priority…

19 d19 dSaveH2OSaveH2O posted:
Need expert advice - new house drain pipe issue

Berek, you are correct.
For a single dwelling, if the stormwater pipe is not subject to vehicular loading and there is no paving, the pipe must be buried a minimum (from…

19 d19 dSaveH2OSaveH2O posted:
Rainwater catchment in tropics (New build)

Hi Leon.
I should have the time to answer this tonight, I couldn't log in for 2 days but all is fine now.
Thanks for all the vital information, it certainly…

21 d21 dSaveH2OSaveH2O posted:
Yellow-ish water from rainwater tank

It is normal for a substandard installation.
Without even seeing photos, I can tell you that your rainwater harvesting system has not been installed to best practice and this is…

24 d24 dSaveH2OSaveH2O posted:
Builder caught in breach of regs refusing to honour warranty

I was wondering whether the chippy followed any plans or whether he was left to his own devices.
If you are in the S.E. suburbs, I could have a look…

26 d26 dSaveH2OSaveH2O posted:
Builder caught in breach of regs refusing to honour warranty

Are you able to post some photos?

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New product research & development

Interests

Water conservation. Fluid dynamics. Hydrodynamics. Vorticity in extreme ground effect. Grand Prix hydroplanes.

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Joined homeone
11 August 2011

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