• Front Loading Oedometer

Front Loading Oedometer

BS 1377:5, ASTM D2435, ASTM D3877, ASTM D4546, AASHTO T216, NF P94-090-1...

  • Rigid aluminium alloy frame
  • 3 lever arm position: 9:1, 10:1, 11:1. Max loading 1848 kg
  • Can be fitted with traditional dial gauge or linear transducer for connection to the Geodatalog data acquisition and processing system

The oedometer consolidation test determines the rate and magnitude of consolidation of a soil specimen restrained laterally and subjected to a number of successive vertical load increments.

The oedometer apparatus has a rigid aluminium alloy frame which avoids distortion under load. The lever arm assembly is supported in precision self- aligning bearings. Consolidation cells, dial gauge/displacement transducer, weight sets and bench are not included and have to be ordered separately (see Accessories).

 

 

Accessories  
Weight sets 26-WF0230/C2 Weight set, 64 kg in total, comprising: 2 x 0.25, 1 x 0.5, 1 x 1, 1 x 2, 1 x 4 and 7 x 8 kg weights.

26-WF0230/D2 Weight set, 80 kg in total, comprising: 2 x 0.25, 3 x 0.5, 1 x1, 1 x2, 3 x 5 and 6 x 10 kg weights.
Mechanical (analogue)
Measuring device
30-WF6401 Dial gauge, 10 mm travel, 0.002 mm resolution.  
Permeability attachment 26-WF0338/A Permeability attachment with 50 ml graduated burette. Complete with clamps, stand and rubber hose for connection to
the cell. Weight 4 kg.
26-WF0338/A fitted to the 26-WF0302 with cell 26-WF0320
Consolidation bench 26-WF0312 Bench for up to three oedometers.
Weight 30 kg
 
Electronic measuring devices 30-WF6207 Linear potentiometric transducer, 10 mm travel.
Note: in case displacement transducer is supplied complete with data acquisition system, then a traceable calibration certificate on request.
 
Data acquisition and processing
system
30-WF6016/T1 Consolidation Geo-Analysis template conforming, to BS 1377:5.  
30-WF6016/T8 Consolidation Geo-Analysis template conforming, to ASTM D2435.  

 

Load pad
Clamping ring
Upper porous disc
Cutter
Fixing ring
Lower porous disc
Wall
Base
Exploded view of consolidation cell 26-WF0320

 

 

Consolidation cells and spare parts
Suitable for both fixed ring oedometer consolidation and falling head permeability tests.
The cell is constructed of aluminium and comes complete with all the parts illustrated in the exploded view.


 

 

Weight application guide
This information is intended to make it easy to select the weight set that is appropriate for the cell size, the
beam ratio and the maximum load applied

 

Cell model 26-WF0320
Beam ratio 1:10
26-WF0321
Beam ratio 1:11
26-WF0325
Beam ratio 1:10
26-WF0326
Beam ratio 1:9
26-WF0335
Beam ratio 1:10
For max. pressure 32 kg/cm2 - 64 kg/cm2 20 t/ft2 - 40 t/ft2 16 kg/cm2 - 32 kg/cm2 16 kg/cm2 - 32 kg/cm2 8 kg/cm2 - 16 kg/cm2
Weight set 26-WF 0230/C2 - 0230/C2 0230/C2 - 0230/C2 0230/C2 - 0230/C2 0230/D2 - 0230/D2 0230/D2 - 0230/D2
Add. weight 27-WF    (-) - 8 x 0275/A    (-) - 8 x 0275/A     (-) - 8 x 0275/A    (-) - 8 x 0277/A     (-) - 8 x 0277/A
Total weight kg 64 - 128 64 - 128 64 - 128 80 - 160 80 - 160

 

 

Typical consolidation configurations

Standard, with analogue dial gauge
Code Quantity Descrption
26-WF0302 1 Front loading oedometer

26-WF032 X(1) 1 Consolidation cell
26-WF0230/C2 1 Weight set, 64 kg in total
30-WF6401 1 Dial gauge, 10 mm x 0.002 mm divisions
26-WF0312 1 Consolidation bench for up to 3 oedometers
(1) to be selected

 

 

   
With digital data acquisition and processing

Code Quantity Description
26-WF0302 1 Front loading oedometer
26-WF032 X(1) 1 Consolidation cell
26-WF0230/C2 1 Weight set, 64 kg in total
30-WF6207 1 Linear potentiometric transducer, 10 mm travel
30-WF6042 1 Transducer extension cable, 6 m long
82-P9008/ELT 1 Set of four cables
30-WF6008 1 Geodatalog, 8-channel data acquisition system
0-WF6016/T1 1 Geo-Analysis template to BS or Geo-Analysis template to ASTM
30-WF6016/T8
26-WF0312 1 Consolidation bench for up to 3 oedometers
(1)to be selected
 

Standards

BS 1377:5 | ASTM D2435 | ASTM D3877| ASTM D4546 | AASHTO T216 | NF P94-090-1 | NF P94-091 | UNE 103-405 | UNE 103-602

  • Max loading (using 11:1 lever arm ratio): 1848 kg, corresponding to 9.061 MPa (92.40 kgf/cm2) on a 20 cm2 specimen (50.47 mm diameter)
  • Overall dimensions: 500 x 200 x 750 mm (height without hanger x width x length)
  • Weight: 21 kg (approx.)


Code 26- Specimen Dimensions (dxh) mm Specimen area cm2 Cell dim. (dxh) mm Weight (kg) Calibration disc, code 26- Upper porous disc code 26- Lower porous disc code 26- Cutting ring code 26-
26-WF0320 50.47 x 20 20 00 139x14 1.3 WF0320/9 WF0320/4 WF0325/10 WF0320/3
26-WF0321 63.50 x 20 31.67 139x14 1.3 WF0321/9 WF0321/4 WF0326/10 WF0321/3
26-WF0325 71.40 x 20 40.00 139x14 1.3 WF0325/9 WF0325/4 WF0325/10 WF0325/3
26-WF0326 75.00 x 20 44.16 139x14 1.3 WF0326/9 WF0326/4 WF0326/10 WF0326/3
26-WF0335 112.80 x 25 100.00 200x74 3.0 WF0335/9 WF0335/4 WF0335/10 WF0335/3