Ground Anchoring
Complete solutions for HPTRM, Geotextiles, Transition
Matting, Erosion Blankets and Landscaping Fabrics
- Time & Labor Saving
- Immediate Performance
- Lightweight and Flexible
- Eliminates time-consuming crimping
Gripple is renowned for providing innovative, cost-effective solutions
for erosion control and soil stabilization applications.
The Terra-Lock™ System is provided in ready-to-use kits with
combinations of Terra-Lock™ Anchors, Terra-Lock™ terminations and
wire lengths specific to the project requirements and geotechnical
conditions.
The system provides immediate stabilization, requires no crimping
and is accompanied by a range of installation tools.
2
1
1
HPTRM, with TL-100 & TL-A2
2
2
HPTRM, utilizing TL-P1
3
HPTRM, with TL-406 & TL-A4
“The Terra-Lock™ System has been developed for fast,
easy installation and immediate security”
3
5
4
4
Transition Matting, TL-304 &
TL-A3
5
ACBM, secured with TL-40A
& TL-A4
6
6
Terra-Lock anchor available in
sizes: TL-A2, TL-A3 and TL-A4
3
Terra-Lock System
™
TL-100
Secures TRM and HPTRM whilst promoting vegetation regrowth
in erosion control and soil stabilization applications
• Open face promotes vegetation regrowth
• 4” head size
• Accepts 1⁄8” wire
• Zinc die-cast, one-piece housing
• Pre-assembled kit ensures time and labor savings
• Wire can be cut below grade
Terra-Lock™ Anchors are designed to provide drive efficiency and maximum load capacity across a
wide range of applications.
TL-100 is available with the following Terra-Lock™ Anchors to suit your project specification:
TL-A2
TL-A3
TL-A4
6 Square Inch (3,870 mm²)
12 Square Inch (7,740 mm²)
1000 lbs
1000 lbs
1700 lbs
1700 lbs
Surface Area
3 Square Inch (1,940 mm²)
System Working Load
500 lbs
Ultimate Load
1100 lbs
4
TL-304
Two-piece design incorporating patented Gripple technology with a
multi-purpose injection moulded load bearing plate
•
4” GF Nylon, UV stabilised, injection
moulded plastic disc
• Accepts 1⁄8” wire
• Zinc die-cast housing
• Low profile design
• Pre-assembled kit ensures time and labor
savings
Terra-Lock™ Anchors are designed to provide drive efficiency and maximum load capacity across a
wide range of applications.
TL-304 is available with the following Terra-Lock™ Anchors to suit your project specification:
TL-A2
TL-A3
Surface Area
3 Square Inch (1,940 mm²)
6 Square Inch (3,870 mm²)
System Working Load
500 lbs
1000 lbs
Ultimate Load
1100 lbs
1700 lbs
5
TL-406
Two piece design incorporating a rubber coated steel bearing
plate and a 5⁄32” wire tendon for higher load applications
• High load rubber coated steel bearing plate
• 6” head size
• Accepts 5⁄32” wire
• Zinc die-cast housing
• Pre-assembled kit ensures time and
labor savings
• Wire can be cut below grade
Terra-Lock™ Anchors are designed to provide drive efficiency and maximum load capacity across a
wide range of applications.
TL-406 is available with the following Terra-Lock Anchors to suit your project specification:
TL-A3
TL-A4
Surface Area
6 Square Inch (3,870 mm²)
12 Square Inch (7,740 mm²)
System Working Load
1000 lbs
1500 lbs
Ultimate Load
2600 lbs
6
2600 lbs
TL-40A
Bespoke high load design for use with Articulate Concrete Block
(ACB) installations
•
Low-profile rubber coated steel bearing
plate
• Accepts 5⁄32” wire
• Zinc die-cast housing
• Fits most common ACB appertures
• Pre-assembled kit ensures time and labor
savings
Terra-Lock™ Anchors are designed to provide drive efficiency and maximum load capacity across a
wide range of applications.
TL-40A is available with the following Terra-Lock Anchors to suit your project specification:
TL-A3
TL-A4
Surface Area
6 Square Inch (3,870 mm²)
12 Square Inch (7,740 mm²)
System Working Load
1000 lbs
1500 lbs
Ultimate Load
2600 lbs
2600 lbs
7
TL-P1™
The high load anchoring pin is designed to hold all types of turf reinforcement
matting, erosion blankets, geotextiles and landscaping fabrics.
•
•
•
•
•
•
•
Up to ten times quicker to install
Reduces labor costs associated with reworking loose
pins
Superior pull out performance compared to traditional
pins and stakes
Ensures close contact between the matting and soil
Designed to eliminate damage to the mat
Removes the need for a separate washer
Easy installation with standard electric drill and
bespoke chuck
C
A
B
Dimension
Size (in)
8
A
B
C
1 3⁄8”
8”
2”
Installation Tools
Anchoring
We offer a range of tools to ensure that the Gripple Terra-Lock™ System is installed with
ease and efficiency.
Gripple REDI Driver
• Gas-Powered Driver with proven reliability
• No generators, compressors, air hoses or extension cords required
• Lightweight & portable at only 15 kg (32 lbs)
• Saves time, money, and energy
JackJaw®
• Multi-tool functionality: extracts Drive Rods and load locks
• Jaw and lever mechanism ensures ease of extraction
• Smooth extraction without bending
• Available with load cell for immediate testing
Drive Rod
• Purpose engineered for toughness and durability
• Capable of penetrating the toughest soil
• Features specific head profiles to match anchors
Wire Cutters
• Wire cutters for all diameters of wire supplied with our systems
• Hardened jaws for durability
TL-P1™
Standard Chuck
• For use when working close to the mat
• Installs pins to full depth without damaging the mat
• Fits general purpose 18 v combi drill
• Automatically disengages when
TL-P1™ reaches full depth
Extended Chuck
•
•
•
•
Designed for use where longer reach is required
Installs pins to full depth without damaging the mat
Fits general purpose 18 v combi drill
Automatically disengages when TL-P1™ reaches full depth
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How It Works
Step One:
Step Two:
Installation
Step One:
Insert Drive Rod
through the anchor
and place against
surface.
10
Step Two:
Use Gripple REDI
Driver to install
the anchor at the
required depth.
Step Three:
JackJaw®
Use
to remove Drive
Rod and load lock
system.
Step Four:
Use Gripple Wire
Cutter to cut wire
below grade if
required.
The Terra-Lock™ System gains its stability through the creation of a truncated
cone of soil. This consolidated mass provides the resistive securing body and is
formed in two steps:
Step One: After driving to the correct depth, the wire is tightened; this rotates the anchor so that the load bearing
surface is parallel to the ground surface.
Step Two: The wire is further tightened to compress the soil above the anchor’s bearing surface. The compression
transfers towards the surface to form a cone of soil which prevents further anchor movement.
The load bearing capacity of the system is determined by: anchor size, anchor depth and soil shear angle. Due to
the complex interaction between these factors, it is advisable that a geotechnical report is utilized as part of the
engineering plans to ensure the appropriate anchor size and drive depth are selected.
Technical Support
Gripple provides engineering design support to ensure you specify the optimum Terra-Lock™
system to meet your project requirements.
Once ground characteristics have been established, our technical team can calculate anchor
loads and design performance; Whether through inititial site evaluation, preparation of
technical drawings, supporting submittals or onsite testing to validate designs. The Gripple
Technical Support Team can work with you at every stage of a project to realize the complete
turn-key solution.
Submittals
CAD
Specifications
Testing
On-Site
11
Case Study
Hillsboro Canal, Package 2
Client
South Florida Water Management District
Contractor
Metro (Prime), B&Z (Sub)
Gripple Terra-Lock™ System
TL-A2, 3 mm (1/8”) Stainless Steel Wire, TL-100 (HPTRM)
TL-A4, 4 mm (5/32”) Stainless Steel Wire, D4 & TL-40A (25 ft ACBM)
TL-A4, 4 mm (5/32”) Stainless Steel Wire, D4 (12 ft ACBM)
Application
Securing ACBM and HPTRM
No. of Systems
8,500 Systems (4,000 with D4, 1,500 with TL-40A, 3,000 with TL-100)
Start to Completion
Oct 2013 - Nov 2014
The Hillsboro canal is managed by the South Florida Water Management District and
forms one of the local flood control system’s main arteries. Following regular inspection,
a 10.5 mile reach was identified as being in need of significant repair where sections
of the bank had eroded and fallen into the canal. This presented problems to local
infrastructure and homes which run parallel to the eroding banks.
A solution was chosen to ensure functionality of the canal for decades into the future.
It was decided that the lower portion of the slope was to be armoured using ACBMs
which extend below the waterline. Above the ACBM, where turf alone provides
insufficient erosion protection, HPTRM was used. In both instances, the Gripple TerraLock™ System was chosen to provide ease of install and a high factor of safety. Owing
to the specific requirements of the two matting products, a broad Gripple Terra-Lock™
System was employed utilising: TL-100, D4 and TL-40A (ACBM Plate) as terminations.
The hard, underlying soil contained coral rocks and presented tough driving conditions.
However, use of the Gripple REDI Driver eased installation and allowed a drive depth of
1.2 m (4 ft) to be achieved. Each of the anchors was subjected to a load test requiring
at least 80 kg (180 lbs) of pullout. The Terra-Lock™ System passed all tests as part of
this process and provided the safety required even under tough conditions.
The broad system used on site benefited from a wide range of install tools including:
Gripple REDI driver, JackJaw®, Drive Rod, D4 Tensioner and Wire Cutters.
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Case Study
Five Mile Creek
Client
County of St. Lucie
Contractor
Murray Logan (Prime), TNT Construction (Sub)
Gripple Terra-Lock™ System
TL-100
3 mm (1/8”) Zinc Aluminium Wire
TL-A2
Application
Securing HPTRM
No. of Systems
5,000
Start to Completion
Jan 2014 - May 2014
Five Mile Creek is a water management canal which protects local homes by
acting as a vital flood defence. Previously the banks had been armoured with HPTRM,
however this was secured using only straight pins with a low pullout resistance.
Following an intense rainfall event in which 457 mm (18”) of rain fell
over 12 hours, the river level rose dramatically, broke its banks and flowed into homes.
During this event, the armoured slopes had sloughed and lost much of
their integrity. Clearly a system with a higher factor of safety was required.
To correct the failed slopes and provide protection into the future, the banks were
first re-graded, then armoured with rip rap at the toe and HPTRM up to the head. The
high flow velocity of the channel necessitated increased pullout resistance of securing
methods. As a result, the Gripple Terra-Lock™ System was chosen to secure the
HPTRM and provide an additional factor of safety. This system has subsequently been
proven to be effective, holding under a 203 mm (8”) rainfall event.
The sandy soil meant that the TLA-2 anchors were easily drivable to a depth of
1.2 - 1.8 m (4 - 6 ft) and comfortably met the required 70 kg (150 lb) pullout resistance.
The installation process was eased through use of Gripple installation tools including;
Gripple REDI Driver, JackJaw®, Drive Rod and Wire Cutters. On this site the JackJaw®
was of particular importance, allowing for straightforward extraction of the Drive Rod.
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Case Study
C-41A Repair, Okeechobee
Client
South Florida Water Management District
Contractor
Dickerson (Prime), B&Z (Sub)
Gripple Terra-Lock™ System
TL-100
3 mm (1/8”) Stainless Steel Wire
TL-A2
Application
Securing HPTRM
No. of Systems
5,000
Start to Completion
May 2014 ‐ June 2014
C-41A, Okeechobee, Florida, is a major waterway managed by the local water
management district. The local soil is extremely soft and consists mainly of very fine
sand and silt. As a result, erosion is a constant issue as it causes major damage to the
banks of the waterway as well as heavy siltation of the channel which could damage
local habitats and infrastructure.
As part of a previous conservation project, the banks were protected using HPTRM.
The mat on this occasion was laid using only rock ballast at the head and toe. This
was then overlaid with turf. Subsequent to the work, the rocks at the bottom of the
slope had been washed away, which then led to the HPTRM floating up and losing any
effectiveness by exposing the toe to undermining.
A more secure solution was provided by the Gripple Terra-Lock™ System. This time
when the HPTRM was installed, anchors were placed underwater at the toe and all
along the slope to the head. This ensured the HPTRM maintained intimate contact with
the subgrade surface, thus providing the erosion protection required.
The system makes use of the time saving, purpose-designed TL-100 which provides
security, aids the ease of installation and has minimal impact on vegetation growth.
This component coupled with the range of Gripple Installation Tools ensures a swift,
straightforward and correct set up is achieved every time.
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Case Study
Prima Feeder Canal, Arizona
Client
Gila River Indian Community
Contractor
Weeminuche Construction Authority
Gripple Terra-Lock™ System
TL-100
3 mm (1/8”) Zinc Aluminium Wire
TL-A2
Application
Securing HPTRM
No. of Systems
350
Start to Completion
December 9 -12, 2013
The Central Arizona Project directs water through a number of canals extending from
the Colorado River into particularly arid regions within the state. Canal realignment
construction was completed in 2011. Since the completion of the project, graded slope
areas around the perimeter of the outlet structure of the Prima Canal have experienced
substantial erosion.
As a result, the area was designated for repair and protection using erosion control
matting.
Although degradable short term rolled erosion control products were initially discussed,
it was suggested that an anchor reinforced vegetation system utilising HPTRM was to
be used to extend design life. As part of this solution, the Gripple Terra-Lock™ System
was used as a method to add security to the matting. The System employs a number
of elements which aid installation ease, reduce installation time and provide a bespoke
solution for the securing of HPTRM.
Central to this system is the Terra-Lock™ Ground Anchor (TLA-2), the design of which
enables straightforward penetration of the mat without tearing or otherwise damaging
it. On this project the required 0.9 m (3 ft) drive depth was reached with ease through
use of the Gripple REDI driver and Drive Rod. The TL-100 top termination secures the
matting in place and by utilising patented Gripple technology, is able to secure the wire
under load without the need for time consuming crimping.
The open face of the TL-100 allows vegetation to grow through, so that when the root
systems begin to establish themselves, the Gripple Terra-Lock™ System supports
rather than competes with natural securing methods.
15
Case Study
Loyn Bridge, Lancashire
Client
Lancashire County Council
Contractor
LCC Operations
Gripple Terra-Lock™ System
TL-100 & TL-A3 - Installed with Gripple REDI Driver and JackJaw™.
TL-P1 Installed With Drill & Chuck.
Application
Securing HPTRM for Slope Reinforcement
No. of Systems
150 TL systems, TL-100 & TL-A3 and 600 TL-P1
Start to Completion
March 2015
Loyn Bridge, a three span narrow masonry arch bridging the river Lune between Hornby
and Gressingham was at risk of damage due to erosion of the bank of the River Lune
upstream.
To armour the bank and ensure the continued structural integrity of the bridge whilst
providing a finish in keeping with the stunning natural environment, the Terra-Lock™
System was installed by LCC Operations in conjunction with an erosion control
geotextile. This was secured by an anchor trench at the crest of the slope and rock
rolls at its toe. Cuttings from willow trees further upstream were planted through the
geotextile to complete the installation.
The Terra-Lock™ Anchor was installed quickly and easily using the Gripple Petrol
Driver, and then instantly load-locked by the JackJaw™. The erosion control geotextile
was secured in place with the integral TL-100 top termination, specifically selected as
vegetation re-growth was a primary objective.
Using the Terra-Lock™ System eliminated the need to crimp at the surface to secure
the mat in place, reducing the contractor’s time on site.
To improve intimacy between the geotextile and the newly seeded soil below, as well as
to further aid re-establishment of natural vegetation, the patented TL-P1 high load pins
were specified and deployed around the anchors. These were installed with a general
purpose 18v combi-drill and bespoke chuck in less than half the time normally taken to
install rebar pins or stakes, and provided superior pull-out loads.
16
Case Study
Cobnor Point, West Sussex
Client
ABP and Natural England
Contractor
Land & Water
Gripple Terra-Lock™ System
TL-100 & TL-A3 - Installed with Gripple REDI Driver and JackJaw™.
Application
Securing HPTRM for Slope Reinforcement
No. of Systems
-
Start to Completion
October 2014
Cobnor Point was identified as an area that suffered heavily from erosion. It could
have been at risk of flooding, which would have affected the agricultural land and
heritage features. In the past, the shoreline was defended using several different
methods including large stones, sandbags full of cement and rip-rap. However, the area
remained at risk from tidal flooding, providing reason to find an alternative and more
secure solution.
As a result, a new northern embankment was constructed and armoured using the
Terra-Lock™ System and a type of erosion control mat. The matting extended across
both sides of the embankment and terminated in a clay-filled trench at the toe of the
wet side.
The Terra-Lock™ Anchor enabled straightforward penetration of the mat without
tearing or otherwise damaging it. The installation of the Terra-Lock™ Anchor provided
immediate and effective stabilisation of the mat. This was further reinforced by the
TL-100, helping to maintain intimate contact between the mat and subgrade surface.
Similarly, the open face of the TL-100 allowed for vegetation re-growth and presented
an ideal solution to preserving the natural appearance of the eroding shoreline.
The project benefited from the wide range of installation tools including the Drive Rod,
JackJaw® and the Gripple REDI Driver. Paired with the Terra-Lock™ System, the overall
install time was reduced to a minimum.
17
Case Study
Blackmoss Reservoirs
Client
Askam Construction - Civil Engineering Division on behalf of United Utilities
Contractor
GHA Livigunn
Gripple Terra-Lock™ System
TL-100
TL-A3
Application
Securing HPTRM for Slope Reinforcement
No. of Systems
420 Systems (TL-100, TL-A3) Area equal to 2100 m2
Start to Completion
February 2013
Two dwellings situated below the Blackmoss Reservoirs in Barley, Lancashire were
identified as at risk from flooding should either or both reservoirs burst their banks after
heavy rainfall. The Terra-Lock™ System was installed in conjunction with an erosion
control mat to reinforce the slope that was situated in the new flood water path.
The objective of the project was to create a new emergency spillway below the
reservoirs. Any flood waters would be directed away from the dwellings and in to an
existing waterway, so they could drain safely.
The site included an area significantly steeper than the surrounding land and formed
part of the route for diverted flood water. Due to the severe incline, passing flood
water could reach speeds of approximately 6 m3 per second. The area could not be
reinforced by planting trees, as this method would impede water flow and take an
unacceptable amount of time to become effective. The specification required the mat to
be mechanically anchored and the Terra-Lock™ System was selected to prevent uplift,
protect the subsoil and withstand the high flows in the event of a breach.
The ease and speed of installing the Terra-Lock™ System provided a quick and secure
solution. The open face of the TL-100 would allow vegetation to grow through over
the course of the product’s 50 year design life, so that when the root systems began to
establish themselves, the Terra-Lock™ System would support rather than compete with
natural securing methods.
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Other Gripple Products
In addition to Civil Construction, we cater for Building Services and Viticulture, Orchards and
Fencing applications. Components from these ranges have been found to complement and further
broaden our system, including:
Rock Anchor
• Stand alone anchor incorporating top termination
• For use in rock or hard soil
• 1650 lbs ulitmate load
Rootball Kit
• Simple and fast installation
• Allows tree to naturally establish itself
• Aesthetically pleasing
• Reduced trip hazard - anchoring is underground
• Deters vandals - no sign that tree is newly planted
• Can be installed using Gripple REDI Driver or manually
• Available in ready-to-use kits
Tensioning tool
Dynamic range
• Eases tensioning and re-tensioning of wires
• Contractor grade tool with an all-metal construction for added
durability and strength
• A fast-locking wire tensioner with push-fit technology
• Easy and secure method of anchoring and bracing
• One action locks both wires simultaneously
19
www.gripple.com
info@gripple.com
Gripple Inc
1611 Emily Lane
Aurora
IL 60502
USA
Tel : +1 866 474 7753
Fax : +1 800 654 0689
Email: usinfo@gripple.com
Gripple Ltd (Headquarters)
The Old West Gun Works
Savile Street East
Sheffield S4 7UQ
UK
T | 0800 018 4264
F | +44 (0)114 275 1155
E | info@gripple.com
Gripple Europe SARL
1, rue du commerce
BP 37
67211 Obernai Cedex
France
T | +33 (0)3 88 95 44 95
F | +33 (0)3 88 95 08 78
E | frinfo@gripple.com
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1, rue du commerce
BP37
67211 Obernai Cedex
Frankrijk
T | +31 (0)70 363 34 30
F | +31 (0)70 362 18 44
E | nlinfo@gripple.com
Gripple Portugal
Estrada Nacional 4
Km 46,5 Pontal
2985-201 Pegões
Portugal
T | +351 265 898 870
F | +351 265 898 879
E | ptinfo@gripple.com
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Pariser Ring 1
76532 Baden-Baden
Deutschland
T | +49 (0)700 95 44 95 11
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E | deinfo@gripple.com
Gripple s.r.l
Via Ponte Pietra, 2
24123 Bergamo BG
Italia
T | +39 (0)35 300 246
F | +39 (0)35 424 0036
E | itinfo@gripple.com
Gripple Industrial Ibérica, S.L.
Ctra. Logroño km 7, 3 Pol. Europa 1
50011 Zaragoza
España
T | +34 (0)97 678 32 67
F | +34 (0)97 678 32 68
E | esinfo@gripple.com
Australia / NZ
OneSteel Wire Pty Limited,
Ingall Street
Mayfield
NSW Australia 2304
T | +61 13 10 80
F | +61 2 1800 062 977
E | auinfo@gripple.com
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