Controls Group Triaxial load frame TRITECH Triaxial load frame TRITECH
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Soil mechanics

Triaxial load frame TRITECH

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BS 1377:7 | ASTM D2850 | ASTM D4767 | BS 1377:8 | NF P94 070 | NF P94 074 | CEN- ISO/TS 17892-9 | CEN- ISO/TS 17892-8 | ASTM D7181 | AASHTO T297 | AASHTO T296
Main features
  • Ideal solution for advanced and research laboratories that require high productivity levels and high quality tests
  • Designed for soil testing laboratories conducting UU, CU, CD and stress path (compression/extension) tests
  • Due to the variable speed range, unconfined, CBR and Marshall tests can also be performed
  • Suitable for automatic PC-controlled triaxial testing (see AUTOTRIAX 2 system)
  • Allows dynamic tests to be performed when fitted with an actuator (see DYNATRIAX system)
  • Maximum compression capacity: 50 kN or 100 kN
  • Speed range from 0.00001 to 99.99999 mm/min
  • Maximum sample diameter (for triaxial testing): 150 mm
  • The quality of the design avoids vibrations that may affect the specimen
  • Large high-contrast 4 x 20-character display with 6-key membrane keyboard

General description
General description
WYKEHAM FARRANCE’s electro-mechanical TRITECH machines are the original high-performance load frames for triaxial tests. Introduced by the company over 50 years ago, they have undergone continuous development and are the ideal solution for advanced and research laboratories that want to perform high quality tests at high levels of productivity.
Based on heavy duty triaxial load frames, with advanced electronics and high quality components, these frames are the top of the range currently available for triaxial testing on soil.  They can be used either as part of a computer-controlled automatic testing system or as high-performance stand-alone units under manual (or PC remote) control.

The load frames are built around a robust twin chromed-column structure, ensuring extremely high rigidity. The loading platen is made from stainless steel.
When the frame is used in PC control mode, all the main functions (speed fast/slow, direction up/down, stop) are managed by the PC software.  In manual stand-alone mode, the user-friendly keyboard on the front panel is used to control all the frame’s functions, including a rapid approach facility that reduces test set-up time. For efficient use the last settings are automatically recalled after switch on and micro switches prevent over-travel problems.  The panel and display are protected from water and dust by a waterproof membrane.

These frames are versatile, compact and easy to use and allow a variety of test procedures to be performed on samples with diameters from 38 up to 150 mm.  They’ve been specifically designed for soil testing labs conducting UU (unconsolidated unconfined), CU (consolidated Undrained), CD (consolidated drained) and stress path triaxial tests but they can also be used, due to their variable speed range, to perform unconfined, CBR and Marshall tests.  They can also be equipped with a pneumatic actuator for performing dynamic triaxial testing.

It requires extenal data acquisition system see our GEODATALOG's 

Two capacities are available: 28-WF4005 - 50 kN and 28-WF4010 - 100 kN.

A complete range of parts and accessories is available to configure these machines for any typical triaxial soil testing application.

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Technical specifications

Models 28-WF4005 28-WF4010
Maximum sample diameter, mm 150 150
Minimum testing speed, mm/min 0.00001 0.00001
Maximum testing speed, mm/min 99.99999 99.99999
Maximum compression force, kN 50 100
Maximum tensile force, kN 5 5
Minimum vertical clearance, mm 335 390
Maximum vertical clearance, mm 1100 1140
Horizontal clearance, mm 364 498
Platen diameter, mm 158 158
Platen travel, mm 100 100
Dimensions, mm (h x w x d) (approx.) 1460 x 503 x 380 1813 x 586 x 515
Power, W 600 680
Weight, kg (approx.) 98 120

Ordering info

Tritech50, Triaxial load frame 50 kN cap. 110-240 V, 50-60 Hz, 1 ph

Tritech100, Triaxial load frame 100 kN cap. 110-240 V, 50-60 Hz, 1 ph

Additional Information

To perform these kind of tests the crossbeam has to be tipped over.Fit each accessory to the crossbeam using the M10 grub screw supplied with the machine.
The following table shows the accessories required to perform the different tests allowed by the TRITECH  machines

UNCONFINED Analogue WF1048 1
WF6453 1
T0104/9 1
T0104/7 1
D1255 1
T0104/4 1
WF4005/39** 1
Digital(*) P0375/C 1
P0370 1
T0104/81 1
P0322 1
T0108/5 1
T0104/4 1
WF4005/39** 1
CBR Analogical WF1048 1
T0103/3C 1
T1009 1
WF4005/39* 1
Digital(*) P0375/C 2
P0375 1
T0104/81 1
P0322 1
T0103/1 1
WF4005/39** 1
MARSHALL Analogue WF1048 1
T1009/F or T1007/F 1
T0104/10 1
B0034 1
B0033 1
WF4005/39** 1
Digital(*) P0375/C 2
P0375 1
T0104/81 1
P0322 1
T0104/10 1
T0104/13 1
B0033 1
WF4005/39** 1

(*) It requires extenal data acquistion unit (see below the dedicated links) 
(**)Required only with model 28-WF4005 


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