The Gripforce® range which is BBA approved
is available as bars and tubes that have a profiled surface which
gives excellent mechanical bonding characteristics between bar/resin
interface.
Bar and tube lengths are available up to 12m without couplers.
Solid Bar Specification - Typical Values:
Bar Dia. (mm)
Ultimate Tensile Load
Ultimate Shear Load
Working Load
Nominal
Weight
22
470 kN
129 kN
150 kN
0.75 kg/m
25
510 kN
167 kN
170 kN
1.02 kg/m
31
730 kN
275 kN
270 kN
1.67 kg/m
*Denotes calculated values
Tube Specification - Typical Values:
Bar Dia. (mm)
Ultimate Tensile Load
Ultimate Shear Load
Working Load
Nominal Weight
22/12
246 kN
109 kN
85 kN
0.57 kg/m
31/15
480 kN
195* kN*
160 kN
1.10 kg/m
Material Specification
Resin Type
Hybrid Vinylester
Glass Type
Modified E-Glass
Glass Content (by weight)
82% nominal
Characteristics
Tensile Modulus
47 GPa
Flexural Modulus
47 GPa
Tensile Strength
1040 MPa
Flexural Strength
930 MPa
Elongation at Break
2.3%
Bending Radius
2.5m
Coefficient of Thermal Expansion
8 x 10-6/°C
Threaded Bar End
Loads
Bar Dia. (mm)
Ultimate Load
Working Load
Ultimate Load
Working Load
Ultimate Load
Working Load
Standard Non-metallic Nut
Standard Non-metallic Nut
High End Load Nut - Steel Cone
High End Load Nut - Steel Cone
High End Load Nut - Glass Cone
High End Load Nut - Glass Cone
22
75 kN
50 kN
198 kN
120 kN
139 kN
92 kN
25
77 kN
50 kN
198 kN
132 kN
139 kN
92 kN
31
N/A
N/A
N/A
N/A
198 kN
132 kN
Threaded Tube End
Loads
Tube
Dia. (mm)
Ultimate
Load
Working Load
Ultimate
Load
Working
Load
Standard Non-metallic Nut
Standard Non-metallic Nut
High End Load Nut - Glass
Cone
High End Load Nut - Glass
Cone
22/12
68 kN
45 kN
101 kN
67 kN
31/15
N/A
N/A
201 kN
134 kN
Technical data has been verified in independent
tests by Lloyds Beak, Bretby Test Centre, Burton Upon Trent.
The bars and tubes have a
profiled surface which gives excellent mechanical bonding
characteristics between bar/resin interface.
Bar and tube lengths are available up to 12m without couplers.
Solid Bar Specification — typical values
Bar Dia. (mm)
Ultimate Breaking Load
Ultimate Shear Load
Working Load
Nominal Weight
22
470 kN
129 kN
150 kN
0.75 kg/m
25
500 kN
167 kN
170 kN
1.02 kg/m
32
760 kN*
275 kN*
250 kN
1.67 kg/m
Tube Specification — typical values
Bar Dia. (mm)
Ultimate Breaking Load
Ultimate Shear Load
Working Load
Nominal
Weight
22/12
246 kN*
109 kN
85 kN
0.55 kg/m
* Denotes calculated values
Material Specification
Resin Type
Polyester
Glass Type
E-Glass
Glass Content (by weight)
82% nominal
Characteristics
Tensile Modulus
47 GPa
Flexural Modulus
47 GPa
Tensile Strength
1040 MPa
Flexural Strength
850 MPa
Elongation at Break
2.3%
Bending Radius
2.5m
Coefficient of Thermal Expansion
8 x 10-6/°C
22mm bar with
standard nut
22mm bar with high
load nut and steel cup
22mm bar with high load
nut and composite cup
25mm bar with
standard nut
25mm bar with load
nut and composite
cup
22/12mm tube with
standard nut
22/12mm tube with high
load nut and composite cup
Accessories
Non-metallic End Plates
Weldgrip non-metallic end plates
are made from glass filled pressure injected moulded plastic.
They complement the rockbolt and soil nail systems, maintaining
the corrossion integrity of the total system.
Plate Dia. (mm)
Load Capacity (BS 7861)
Weight
130
71.5 kN
132 g
150
70 kN
158 g
200
60 kN
250 g
250
120 kN
300 g
Tube Injection Adapters
Lightweight moulded plastic
injection adapters to suit thread sizes fro the
31/15mm and 22/12mm tubes.
Spinning Adapters
1, 2 & 3 piece steel spinning
adapters with a range of drive ends and nut sizes to suit all
the Weldgrip Rockbolt and Soil Nail products.
Centralisers/Spacers
Available for 22mm, 25mm &
31mm diamteter Bar and Tube. Lantern dimensions are made to customer
requirements.
Grout Sock
Available in 50m roll length
or ready fitted to tubes or bar made to order.
Dett Samples Post Failure
Dett Samples Post
Failure
FIBREGRIP FT 500 Fully Threaded
Composite Bar & Tube
Fibregrip FT 500 polyester fully threaded bar and tube is available
in lengths up to 12 metres. The advantage given by the continuous
thread enables lengths to be cut to size on site, or additional
lengths added by couplers, which allows more flexibility during
installation.
FT 500 is suitable for a wide range of applications in the Civil,
Tunneling and Mining Industries
Injection tube fitted with free-running
non-metallic nut.
Solid bar fitted with torque/break-out
non - metallic nut for use with
lengths up to 3 metres installed through resin capsules.
Injection
tube fitted with
free-running non-metallic nut
Injection
tube fitted with free-running non-metallic nut
Solid
bar fitted with steel cone andnon-metallic nut
(high-end load arrangement)
24mm
ø Threaded Solid Bar Specifications
Ultimate Tensile Strength
540 kN**
Ultimate Shear Strength
145 kN**
Working Load
180 kN
Weight per metre
0.84 kg
** When tested in accordance
with BS 7861
Nut Type
Ultimate Load
Working
Standard Non-Metallic
80 kN
50 kN
High End Load Nut Arrangement
Non-Metallic with Composite Collar
139 kN
92 kN
Non-Metallic with Steel Cone
198 kN
132 kN
24mm
ø Threaded Tube Specifications
Ultimate Tensile Strength
290 kN
Ultimate Shear Strength
130 kN
Working Load
97 kN
Weight per metre
0.65 kg
** When tested in accordance
with BS 7861
Nut Type
Ultimate Load
Working
Standard Non-Metallic
80 kN
50 kN
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Product
Brochure - FT500 Bar & Tube - 252k
Product
Brochure - Accessories - 839k
Weldgrip are also proud to have attained BBA accreditation and ISO
9001 standards in recognition of our continuing excellence in Geotechncial
products and services.
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