New Build Eyesore Explained
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- Опубликовано: 15 сен 2024
- On most of our new builds and subdivisions in the Hutt Valley, you may have noticed big ugly water tanks. In this video, we will talk all about these new build eyesores and explain what they do and more. If you like this kind of content and want more please consider subscribing!
So many more people need to subscribe to NZ Builder! I learn so much from Josh's videos!
Great video although technically that's a detention tank not a retention tank. The difference is that a retention tank can be used for watering the garden although there also needs to a level of water still in the tanks to feed the stormwater. I would also suggest looking at a company called thin tanks which can be used as a fence line. Rather than the black tanks
Absolutely necessary 👍🏾
Glad to hear that new builds require them.
Water management should always be considered.
Good idea, but I reckon 2000L is probably too small. A few years ago I re-did my soak pit to slightly-above code, taking into account NIWA rainfall data, worst-case Hutt Valley floor perc rates, GWRC +16% bias etc and for my 100m2 house, that's just shy of 4000L to meet code. Detention tank and soak pits should follow fundamentally the same formulas.
So for a new build with a larger footprint and way more impermeable surfaces, gonna throw a total guess number out and say you probably want more like 6000L or more. It looks like these smaller tanks are just a compromise by Wellington Water: It's easier to get property owner buy-in and it's better than nothing, especially cumulatively across the region.
Anyway, it'd be good to get those plumbed in for laundry and toilet with either mains switchover or mains top-up. Good thing those Promax tanks have the pump housing, so that option is there :)
my thought is that this only catches water off roofs, but their complaint is about the concrete stopping permeation. also, as an american, its the governments job to manage their systems such as storm drainage, although i guess we are forced to dig massive holes for that...
The calcs for a soak pit are going to result in a higher volume than a detention tank. If a soak pit goes over capacity you're in trouble; but if a detention tank goes over capacity the excess just goes into the stormwater network, and it's doing what it's designed to do anyway (which is basically just to make sure stormwater flows aren't going to exceed what the network can handle).
Excellent. Nicely explains what my neighbours in Lower Hutt have just put in place. Thanks. 👍
Glad to help
Thanks Josh, I'm slowly in the process of modernizing my house and have plans to install some tanks. My initial thought was to use the water at home to reduce load on the local supply (which we nearly lost and the entire town was on urgent restriction).
Until now, I never knew that trickling back to the storm water was even a thing. Makes sense. Maybe I can have a 2 tank set up. The first tank acting as a supplemental tank for a mix of tank and town supply and the second tank would be an overflow from the first tank and act as a surge tank.
Appreciate the info
I have one of these and they are expensive if you also tie into your toilet flush system. From a water recycle perspective, the actual water usage cost savings is very minimal compared to the total water bill. As a buffer for storm water, it’s a minimal buffer as they fill quite quickly and subsequently overflow into the system. For water recycling, they empty quickly - in my household, probably in less than two weeks so they largely sit redundant for most of the year. If doing again, and emphasis on water retention and recycling, I’d go for a 10k ltr modular sunk system.
Excellent explanation Josh. I understood every word you said.
Great to hear!
I did a soak pit 4 years ago. Pleased I did looking at those! I wonder if can hide tanks under a deck or buried in the ground, even half buried like rural water tanks.
Those water tanks are butt ugly. Opportunity for better designed tanks.
Given that NZ city water costs look likely to rise considerably, would be great to see combined water use (garden, house) and surge control options available. Do these exist?
Love your work Bro.
Special foundation? What kind of cement is that..
These make me laugh. Years back councils were making people rip out tanks. Councils will take all the "development" fees then not actually put in the infrastructure.
Can they go underground ?
These are just another beauracratic waste of money. They only work during light rain. When it's raining heavy they just are coming straight out the overflow anyway, and on top of that unless they are maintained then the 20mm line gets blocked and they end up being full all the time
Pretty much this. Unless you're reusing the water to fill toilet cisterns or laundry, bloody waste of time these shitty tanks are drawn on to the plans by some wanker in an office. Don't even get me started on in slab aquacomb tanks.
Did you know erosion of streams mainly occurs during those frequent small rainfall events? So these sorts of approaches are actually critical to maintaining the health of our waterways. Just because you don't understand how they work doesn't mean they are a waste of money.
Certifying plumber & drainlayer I know how these systems work. Just because someone's wanky design works in theory in the vacuum of their cushy office doesn't mean it's always practical for the real world.
10 k, cheap, council made us install a fire hydrant on our property, 100mm water main, 40k.
Crazy