CERA TC3 Announcements – May 2012

Posted 05 Jun 2012 by stalbanscommunity Popular
Posted in CERA/Govt , Suburbs , TC3
This item was posted on the St Albans Community website - click here to view the original

CERA TC3 Announcements

 

 

The DBH guidance provides information
and criteria for establishing where damaged
foundations can be repaired and where
replacement foundations are required.
For TC3 properties where repairs to existing
foundations can be undertaken, the guidance
provides information about repair options.
For TC3 properties that require new or
replacement foundations, the guidance
outlines three foundation types. These are:
deep piles, site ground improvements, and
surface structures with shallow foundations.
Each of the foundation types have different
capabilities to accommodate various levels
What the DBH
Guidelines
Cover
TC3 Announcements:
What They Mean for
Property Owners
The Department of Building and Housing (DBH) has published
guidance that will help engineers, building control officials and
insurance assessors determine if foundations in Technical Category 3
(TC3) areas can be repaired or need to be replaced.
Ultimately, homeowners and their insurers will
need to make decisions about repairing or
reconstructing foundations, with advice from
a Chartered Professional Engineer. In making
these decisions, they will use information
gained from geotechnical drilling and off-site
geotechnical analysis.
The Earthquake Commission (EQC) is leading
a drilling programme for TC3 properties.
Drilling is already underway in the eastern
areas of Christchurch.
Note: The drilling programme provides
essential information on properties with
foundation or piling damage. It will not
always be necessary to drill on every
property in the area.
If a TC3 zoned property has no foundation
or piling damage, there is nothing in the
DBH guidelines or the requirements of
the EQC drilling programme to stop repair
work starting on that property.
0800 RING CERA I 0800 7464 2372 I Fax (03) 963 6382 I www.cera.govt.nz
of vertical settlement and lateral spreading,
and place different constraints on the type of
dwelling that the foundation can support.
The guidance aims to provide solutions that
result in compliance with the Building Act
2004 and the Building Code.
DBH will update the guidance over time
to reflect new innovations, knowledge and
practical experience. This does not prevent
homeowners from progressing their repairs
using this version of the guidance.
To view a copy of the DBH guidance visit
www.dbh.govt.nz/guidance-on-repairsafter-
earthquake
CERA
0800 RING CERA (0800 7464 2372),
www.cera.govt.nz
EQC
0800 DAMAGE (0800 326 243),
www.eqc.govt.nz
Christchurch City Council
03 941 8999, www.ccc.govt.nz
Important
Contacts
Waimakariri District Council
03 311 8900, www.waimakariri.govt.nz
Selwyn District Council
03 347 2800, www.selwyn.govt.nz
Department of Building and Housing
0800 24 22 43, www.dbh.govt.nz
EQC is managing the TC3 drilling programme on all properties, both under and over its cap of $100,000 + GST on cover for built residential property.
Testing may not need to take place on every affected property. EQC has been working closely with both the DBH and local councils to ensure the onsite testing will meet building consent requirements.
Both private land and roadside berms (the grass verge between your property and the road) will be investigated.
The drilling work in the eastern suburbs is expected to take six to nine months. Timeframes for the remaining western and southern suburbs will be announced at a later date.
Any property owners whose property requires drilling work will hear from EQC by mid June.
Once the geotechnical information is analysed, an engineer will design the foundations for the property. Property owners will then be contacted either by EQC’s home repairs project manager, Fletcher EQR, or their private insurer to discuss repair options for their home.
A suburb-by-suburb list of areas to be drilled is available online at: canterbury.eqc.govt.nz/news/where-we-are-working
Note: The purpose of the EQC drilling programme is to provide information for foundation design as part of building claim(s); it does not relate to land claim(s) with EQC.
Where land has suffered earthquake damage, EQC will be contacting the homeowners soon about their land settlement. More information is available at: http://canterbury.eqc.govt.nz/claims/land/cover
EQC Drilling Programme
The EQC Drilling Process
Step 1: Marking out the drill site and service clearance
EQC field staff will test an area of the property least likely to cause disruption. They will find a suitable location either in the front or back yard of a property, or directly in front of a property in the roadway. Using a ground-penetrating radar unit (approximately the size of a lawn mower), they will check that no underground cables or pipes are present at the test location. As a double check, a cable locator will revisit the site within a week to verify there are no cables present. Each visit will take around 10–20 minutes and should not inconvenience the resident. A wooden stake will be placed in the area to be drilled. It is imperative that residents do not remove the wooden stake.
Step 2: Investigating soil
Wherever possible, EQC field staff will drill on the roadside berm without disrupting residents. However, in exceptional circumstances they may need to investigate a property by using one of the following methods:
a) A Cone Penetration Test (CPT) provides high-quality geotechnical data. A drill rig will push a rod, about 20mm in diameter, into the ground to 20m below the ground surface. The rigs weigh a minimum of 2 tonnes and are on either tracks (like a digger) or wheels. A CPT test will gather data that allow for detailed analysis of how liquefiable the soil is.
b) A machine-drilled borehole is made to a diameter of 100mm. Soil is extracted, boxed and sent to our lab for logging and testing. The hole will be backfilled with grout on the day of drilling completion.
Step 3: Reinstating the property
EQC field staff will reinstate the property either on the day or within three weeks of drilling. To be sure that they leave it in its original state, they will refer to photos taken before the drilling started.
Step 4: Using the data
EQC will manage your data through its Project Orbit platform. Engineers will use that information when designing foundations and seeking building consent.
Step 5: Repairing your home
Homeowners will be contacted by Fletcher EQR or their private insurer to discuss repair options for their home.
0800 RING CERA I 0800 7464 2372 I Fax (03) 963 6382 I www.cera.govt.nz

Discussion

Related Items

Mt Pleasant News 20 November 2014

Mt Pleasant News 20 November 2014

Thursday, 20 November 2014 2:39 p.m. by MtPleasantCC