Design and Construct

Design and Construction
CLL takes care of the design and build of your in-ground projects, simplifying the process for our clients and
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Early Contractor Involvement – ECI
Getting us involved from the outset of your project means a seamless end-to-end solution. Our 35 years of experience
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Bored Piling

Deep Shafts
CLL is capable of digging the deepest shafts in New Zealand. These vertical holes can be up to 4.2m
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Kelly Casing Piling
In cases where the ground is not strong enough to be stable while a hole is drilled, the sides
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Bored piling
At CLL we lay the foundations for structures to be built upon, and CLL has many ways to bore
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DTH hammer
Down the hole hammers, or DTH uses a jackhammer to shatter hard rock into small cuttings and dust. This
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Bentonite and polymer piling
Some soil conditions, particularly more sandy environments, require the use of a hole-stabilising lubricant. Both bentonite and polymer fluids
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Displacement & Ground Improvement Piling

Wick Drains
Ground Improvement
Over the last 12 years CLL has progressively explored, developed and implemented several ground improvement techniques. CLL trialled and
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Geopier
RAPS, GRAPs, GP3 RAPs, Geopier came to Christchurch in 2011 with their proprietary patented techniques with the aim of
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Olivier Piles
An Olivier pile is a patented drilled displacement pile made of concrete or reinforced concrete with a screw-shaped shaft
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Rammed Aggregate Piers (RAP)
A Rammed Aggregate Pier (RAP) is an intermediate foundation system which provides superior support capacity, increased bearing capacity and
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Rigid inclusions
Rigid inclusions are ground improvement elements used to transfer loads through weak compressible soils, to deeper underlying competent soils.
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Displacement Piling and Ground Improvement
Full displacement technology has been developed in Europe. There are several versions for this process, some which partially displace
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Secant Walls
CLL have been constructing secant walls for 12 years. Secant walls are needed under specific conditions where soft saturated
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Compensation grouting
Compensation grouting is a type of repair, a way of lifting a structure. It is an active technique, which
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Permeation grouting
Permeation grouting is a complex technique which can involve the use of various grades of cement with and without
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CFA Double Rotary

Basement developments
Our team have been assisting with design, method and construction of one, two and three level basements for residential
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CFA Piling
Continuous Flight Augering, sometimes known as auger cast piling, is a technique to create concrete deep foundations. A continuous
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Double Rotary CFA
From the time we started with CFA it has always been the dream of the CLL team to get
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Reinforced concrete piles
Reinforced concrete piles are one of the most common types of foundation. RCP’s can be created onsite, or be
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Retention Piling

Retaining solutions
We construct retaining walls of many types and sizes, for commercial, industrial and residential clients, and for public infrastructure
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Driven piling
Driven piles transfer their load to layers of rock or soil that have sufficient bearing capacity, and suitable settling
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Steel Clutched Tube Walls
Clutched Tube walls were pioneered by CLL in NZ for the development of basements due to a situation of
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Sheet Piling and Combi Wall Piling
Sheet piles and combi wall systems are shaped steel and tube sections with interlocking edges (or clutches) which are
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Bank Stabilisation and Slip repair

Slip/Cliff repair
We specialise in slip and cliff-face stabilisation and our expert teams can identify both the cause, and ways to
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Soil nails, soil anchors
Soil nails, and their bigger cousins, soil anchors are a remedial measure to treat unstable natural soil slopes. As
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Micropiles
Micropiles are sometimes called minipiles, and are a deep foundation element constructed using high-strength, small-diameter steel casing, and/or threaded
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Abseil & Rope Access
CLL’s Abseil & Rope Access team is hugely experienced in carrying out projects that involve height and restricted access.
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Piling Drainage Solutions

Counterfort drains
A counterfort drain (sometimes known as a buttress or trench drain) is particularly useful in wet swampy-like soil configurations.
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Column drains
Column drains, sometimes called stone or vertical drains, are a technique to install artificial paths for water into soft
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Buttress drains
Buttress drains, also known as counterfort drains or trench drains, improve slope stability by controlling groundwater pressures through subsurface
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Wick drains
Also known as Prefabricated Vertical Drains, wick drains provide drainage paths to remove pore water out of soft compressible
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Foundation & Structures

Foundation Construction
Commercial, industrial, civil and residential foundations are a key focus of our groundwork improvement solutions. We provide an integrated
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Structures and concrete works
Concrete is a wonderfully versatile material that we have considerable experience working with. We take pride in offering construction
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Bridge construction
CLL have constructed, and reconstructed, a number of bridges including major roadways and residential bridges (particularly for private access).
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Rail

Kiwi Rail Construction
CLL has carried out rail infrastructure projects in major cities across New Zealand, including design and builds and stabilising
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Limited Access Piling

Underpinning
Underpinning is strengthening and reinforcing an existing structure’s foundation; usually by extending its depth and breadth. Underpinning is performed
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Noise walls
Noise walls may also be known as acoustic, sound or noise barriers. They are precast concrete elements, often a
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