| For collecting
undistubed samples of 38mm dia for Triaxial shear strength and Unconfined Compressive
strength either straight from the field or from a sample of larger diameter. The
wall thickness is maintained approximately 1.6mm with an area ratio approximately
17 per cent. Both relieved and unrelieved sampling tubes are available. In the
relieved type of tube, the internal diameter is relieved by about 0.5mm beyond
approx. 19mm length from the cutting edge of the tube. This is most suitable for
highly cohesive soils. In the unrelieved type, the internal diameter is uniform
through out. This type is most suitable for soils of low cohesion. These 38mm
dia tubes are available in different lengths.
Relieved : (a) 150mm (b)200mm
(c) 225mm (d) 300 mm |
