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Ground Improvement consists of closely spaced MultiPole Uglie piles that reinforce in-situ soils against the seismic induced strains that trigger liquefaction.
We’ll use high frequency vibration and pile driving to install the piles to a specified height above or below ground.
If you’re planning on having a TC2 concrete slab we’ll place compacted gravel on top of the piles. If it’s a timber floor you’d like we can install additional piles in-between ground improvement piles to receive bearers.
• Installation time frame subject to the size of the poles and the quantity and ground conditions.
• Can be designed for more than 300mm of lateral movement.
• Non-damaging, non-disturbing installation.
• Uses award-winning MultiPoles.
• PS1, PS3 and PS4 provided.
Timber pole ground improvement is included in MBIE Guidance April 2015 as a Type G5 ground improvement method.
If your site is likely to experience more than 300mm lateral movement in a future seismic event, extra rows of piles can be added on the side(s) of the building that are most susceptible.
If you need Deep Pile Foundations as well as Ground Improvement, we can install additional piles that reach an identified competent bearing layer.
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TGI01 – Ground Improvement tech sheet
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CGI01 – Causeway upgrade project case study
CGI02 – Residential dwelling St Albans, Christchurch case study
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Technical category | Type of MultiPole used | Typical pole diameter | Typical pole length | Typical pole spacing | Typical installation method | |
---|---|---|---|---|---|---|
Residential foundations | TC2 & TC3 | Uglie | 200–300mm | 2.4–4.8m | 1.0–1.5m | High frequency vibration and pile driving |
Commercial foundations | TC2 & TC3 | Uglie | 300mm | 6.0–15.0m | 1.0–2.5m | High frequency vibration and pile driving |
Foundation system | Technical Category | Type(s) of MultiPole used | Typical pole diameter | Typical pole length | Typical pole spacing | Typical installation method | |
---|---|---|---|---|---|---|---|
Deep Pile Foundations | Residential foundations | TC2 & TC3 | SED, Uglie, UniLog | 150–250mm | 1.0–22.0m Poles can be joined to reach greater depths | 2.0–4.0m | High frequency vibration and pile driving |
Commercial foundations | TC2 & TC3 | SED, Uglie, UniLog | 250–300mm | 1.0–22.0m Poles can be joined to reach greater depths | 2.0–4.0m | High frequency vibration and pile driving | |
Ground Improvement | Residential foundations | TC2 & TC3 | Uglie | 200–300mm | 2.4–4.8m | 1.0–1.5m | High frequency vibration and pile driving |
Commercial foundations | TC2 & TC3 | Uglie | 300mm | 6.0–15.0m | 1.0–2.5m | High frequency vibration and pile driving | |
Raft Foundations | Residential foundations | TC2 & TC3 | UniLog | 275mm for beams and 180mm for jack studs | To suit house dimensions | 1.0–4.0m | 5 tonne excavator |
Commercial foundations | TC1, 2, 3 | UniLog | 275mm for beams and 180mm for jack studs | To suit building dimensions | 1.0–4.0m | 5 tonne excavator | |
Road foundations | TC1, 2, 3 | UniLog | 275mm for beams and 180mm for jack studs | To suit building dimensions | 1.0–4.0m | 5 tonne excavator |
First of all, we’ll need a geotechnical report for your site. If you don’t have one of these, we’ll help you get one.
This will be based on your geotechnical report, and could involve the customisation of one or more of our existing foundation systems.
Our installation processes are fast and efficient. They’ll have minimal impact on neighbouring properties and will leave your site undamaged.
Issuance of PS3 and PS4 documentation.
You now have excellent foundations to build on!
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