Auckland Weather 27/01/23 and Cyclone Gabrielle

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#3041443 24-Feb-2023 16:52

Deanonzl:
Southern Kaipara (Makarau) almost 70mm now.

Just hitting the north shore now, anyone working in the city may want to consider staying in there for dinner...

elpenguino

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#3041444 24-Feb-2023 16:52

neb:
elpenguino:

Raising your house seems too easy to be true, what am I missing?

It's possible, and done as standard in some regions, but it tends to be done when the house is built rather than as a retrofit.

Not so easy for those pad-on-ground houses which are all the rage these days. But for a country that loves moving buildings around, I would have thought it would be easy enough to jack up a house on piles.

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neb

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#3041452 24-Feb-2023 17:00

elpenguino:
Not so easy for those pad-on-ground houses which are all the rage these days. But for a country that loves moving buildings around, I would have thought it would be easy enough to jack up a house on piles.

Problem is those piles, if you mean the proper 300mm house piles, are concreted 2-3m into the ground (due to the inconsiderate issue of being designed to stop the house from moving anywhere), so you'd need to excavate out around them to create room to work, prop the house up on temporary supports, cut the piles, jack it up to its new position, re-pile, and then build an earth embankment under and around the house, with reinforcing at the edges so it isn't just washed away by floodwaters. That might be six months work and hundreds of thousands of dollars, just for that one house.

tweake

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#3041466 24-Feb-2023 17:32

elpenguino:

Raising your house seems too easy to be true, what am I missing?

i have seen it done. there is a good one if you drive east out of whangerai out to Glenbervie, there is one near the road which is sitting very high on compacted gravel, but in that is also some massively long piles. thats in the middle of a flood plain which floods regularly.

however the biggest problem is kiwis want the cheapest build possible to maximise the return on investment. sad to say, nz houses are for investment not for living in. you can bet, once everything calms down, any flood protection measures that cost home owners people will fight against.

i still remember builders and owners complaining about having to install insulation and that only costs a few thousand. for flood protection we can be talking 10,000's to 100,000's.

richms

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#3041534 24-Feb-2023 18:40

tweake:

i have seen it done. there is a good one if you drive east out of whangerai out to Glenbervie, there is one near the road which is sitting very high on compacted gravel, but in that is also some massively long piles. thats in the middle of a flood plain which floods regularly.

however the biggest problem is kiwis want the cheapest build possible to maximise the return on investment. sad to say, nz houses are for investment not for living in. you can bet, once everything calms down, any flood protection measures that cost home owners people will fight against.

i still remember builders and owners complaining about having to install insulation and that only costs a few thousand. for flood protection we can be talking 10,000's to 100,000's.

Also it breaks the "indoor outdoor flow" that people seem to rave on about which is all good till the flow is the floodwaters. I like having a house that is somewhat above ground level on a gentle slope that goes all the way to the ocean. No river to flood, no steep cliff face to collape, just have to make sure the flow from up the hill goes around the house and not into the basement.

Richard rich.ms

tdgeek

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#3041543 24-Feb-2023 18:57

Deanonzl:

Southern Kaipara (Makarau) almost 70mm now.

Lots of power flickers too. Generator full & ready.

Strange how the Police have stated there are lots of slips around South Head & Topanui, but no direct examples.

Are we supposed to guess & stumble across while driving?

No, you are supposed to play safe and stay home.

Deanonzl

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#3041544 24-Feb-2023 18:58

Very popular in Northern NSW or Queensland to see houses on stilts.

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tdgeek

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#3041546 24-Feb-2023 19:00

mattwnz:

Interesting article and photos from 1938 of similar flooding and silt buildup in the Esk. https://www.nzherald.co.nz/hawkes-bay-today/news/losing-sight-of-history-esk-valley-flooding-reminder-of-disaster-risks/PIQPTCIAH5EL5IGLZ6N5W3IHY4/ I can't really understand why homes were allowed to be built on it in terms of peoples health and safety. Shouldn't really take this sort of thing and lives lost for decisions to be made. Crops...fine, but that is a risk growers take in a flood plain.

Real Estate cap on. Its a good buy. In all seriousness, these issues could happen to anyone, but if you factor in climate change, the dice is now unbalanced. While I respect your post, its in hindsight. How many posts and media articles in the last 30 years predicted this outcome?

tdgeek

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#3041560 24-Feb-2023 19:03

elpenguino:

Saw an infotainment-type series on netflix about natural disasters, including hurricane ida which hit florida amongst other places.

One coastal place in florida has a simple answer to inundation - every house is raised on poles 22 ft high.

In the case of hurricanes, buildings are still wrecked by the wind but that is less of an issue in Esk amongst others.

Raising your house seems too easy to be true, what am I missing?

If you have been to San Leon, coastal village south of Houston they are all on stilts. They survive hurricane wind, and the storm surge. NZ will never get that issue, but its a real option.

neb

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#3041562 24-Feb-2023 19:09

tdgeek:
If you have been to San Leon, coastal village south of Houston they are all on stilts.

Just had a quick read-up of the place, it's a census-designated place not an actual town or municipality. They held a vote in 2017 over whether they should incorporate, and it was overwhelmingly rejected.

So pretty much the entire place is a high flood risk, and they rejected an attempt to form a municipal corporation that would be able to deal with things like that.

Only in America... or at least, only in Texas, they really seem to like doing stuff like this, for example with their power grid.

tweake

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#3041569 24-Feb-2023 19:21

well it looks like mangawhai has taken a hit. rain radar looks really bad. it looks to be cut off. mangawhai road flooded, mangawhai-kaiwaka rd flooded/slip, side roads flooded. a message that dome is also flooded. i suspect tomarata will be as well. there was a message that cove rd was out but not sure on that.

https://twitter.com/Kiwi_Wiski/status/1628988134959771649/photo/1

neb

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#3041571 24-Feb-2023 19:25

Given the events of the last month, whichever politician retargets Three Waters to One Water and comes out with a roadmap to fixing it is going to win by a landslide...

quickymart

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#3041573 24-Feb-2023 19:28

Did everyone receive a text alert about the incoming rough weather? Some phones at my place got it, some didn't.

tdgeek

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#3041575 24-Feb-2023 19:29

neb:
tdgeek:

If you have been to San Leon, coastal village south of Houston they are all on stilts.

Just had a quick read-up of the place, it's a census-designated place not an actual town or municipality. They held a vote in 2017 over whether they should incorporate, and it was overwhelmingly rejected. So pretty much the entire place is a high flood risk, and they rejected an attempt to form a municipal corporation that would be able to deal with things like that. Only in America... or at least, only in Texas, they really seem to like doing stuff like this, for example with their power grid.

Yes, its tiny, hence a village, but its still there. When I was there, why are you here?? Still there

ezbee

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#3041578 24-Feb-2023 19:34

Raising your house.
I suppose the now typical Kiwi house on a concrete slab does not have enough structure to be raised?
Not like old school on piles, there is structural floor built into the whole thing.

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