Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Flood defence house-tanking pilot successful

Monday, 14 July 2014

Flood defence house-tanking pilot successful

Christchurch City Council has successfully concluded the pilot test of the 'house-tanking' flood defence measure outlined in the Mayoral Flood Taskforce report.

The pilot exercise started on Thursday 10 July 2014 using a suitable red-zone house. The 'house-tanking' process involved the application of a waterproof membrane to the exterior of the house and then placing bunding around the house to contain the water. This bunded area was then flooded to a level of 1100 millimetres on Friday afternoon and remained in a flooded state until this afternoon, Monday 14 July 2014.

John Mackie, Unit Manager Transport and Greenspace says, "It is really heartening to see that this technology has been successful. A very small amount of water made its way under the house, which was pumped away by a small submersible pump beneath the floor, but no water came inside or anywhere near breaching the floor levels.

"In the flood-events of March and April this year, some houses experienced these type of flood conditions for up to 12 hours, so it has been a valuable exercise for us to run this pilot over a 72 hour period. That gives us great confidence in this technology in terms of it being a viable flood-defence tool.

"House-tanking is one of the recommendations from the Mayoral Flood Taskforce report that needed to be tested. We now know that this is a flood-defence measure that works.

"The next step for us now is to produce a full technical report of the findings from this pilot test and include it in the final Mayoral Flood Taskforce report which will go to Council early next month. The Council will then decide on which recommendations from the Taskforce that will protect those residents in the areas identified as vulnerable to flooding," Mr Mackie says.

Christchurch City Mayor, Lianne Dalziel established the Mayoral Flood Taskforce as a result of the heavy rainfall events in March and April of this year, which caused flooding across the city. The Taskforce was asked to come up with short-term flood mitigation recommendations for the most flood vulnerable areas of Christchurch.


- Ends -

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

2040 Target And Lower Standards: “Swimmable” Rivers Five Times More Likely To Make You Sick

Forest & Bird has condemned the government’s new water quality standards, warning New Zealanders that they lock in current levels of water pollution and allow for a 5-fold increase in the chance of getting sick from swimming in a river.

“Despite an explicit assurance from Minister Smith that the new water standards would provide for human and ecosystem health, he has failed to deliver on either of these things,” says Forest & Bird CEO Kevin Hague. More>>

ALSO:

 
 

Immigration: Clampdown On Rogue Employers Good First Step

The Human Trafficking Research Coalition is pleased at the new clampdown on rouge employers who exploit migrants announced by Minister Woodhouse this morning, and believes this is a step in the right direction. More>>

ALSO:

Mayor: 750 New Social And Affordable Homes For Wellington (Over A Decade)

The next stage of Wellington’s Housing Upgrade Programme will see at least 750 new units of social and affordable housing built over the next decade, Mayor Justin Lester has announced. More>>

ALSO:

22/2: Christchurch Quake Memorial Unveiled

A city, a region, a nation and an international community impacted by the Canterbury Earthquakes will come together to mark the sixth anniversary of the deadly quake and dedicate Oi Manawa Canterbury Earthquake National Memorial. More>>

ALSO:


November Quakes:

Gordon Campbell: On The Mana-Maori Party Deal

If the self-interest involved wasn’t so blatant, the electorate deal between the Maori Party and Hone Harawira would be kind of poignant. It’s a bit like seeing the remaining members of Guns’n’Roses or the Eagles back on the road touring the nostalgia circuit… playing all the old hits of Maori unity and kaupapa Maori politics. More>>

ALSO:

Private Provision: First Social Bond To Focus On Mental Health

New Zealand’s first social bond will help around 1700 people with mental illness into work, Finance Minister Steven Joyce and Social Investment Minister Amy Adams say. More>>

ALSO:

Immigration: Short Reprieve For Nine Indian Students

A temporary hold on deportations of nine Indian students is a step in the right direction but the Government urgently needs to implement safeguards to stop further injustices to more international students, the Green Party says. More>>

EARLIER:


Megaupload Case: High Court Rules Dotcom, Co-Accused Eligible For Extradion

Internet entrepreneur Kim Dotcom and his three co-accused are eligible for extradition to the United States, New Zealand's High Court ruled... Justice Murray Gilbert upheld a decision by the District Court that there were grounds for Dotcom, Mathias Ortmann, Bram van der Kolk and Finn Batato to be extradited. More>>

ALSO:

PREVIOUSLY:

Port Hills Fire: Midday Update, Monday 20 February

• 9 homes destroyed
• 2 homes with partial damage. Damage includes things like cracked windows, heat damage.
• 3 properties with damage to other external structures e.g sheds or outbuildings More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news