The most widely used method for measuring the undrained shear strength and sensitivity of soft to medium-stiff clays in-situ

• Preliminary field investigation of undrained shear strength of soft to medium stiff clays
• Direct penetration from 0 to 10 metres depth
• 2 vane sizes
  0-80kPa and 0-100kPameasurement ranges
• Better evaluation of rod-soil frictions with 180 degrees slip-coupling system
• Built to withstand tough operating conditions
• Vane manufactured from high quality stainless steel
  

The H-70 was originally developed for the special task of preliminary investigations in soft clays without pre-boring. It allows for safe boring down to 10 metres by simple hammering, drilling or pressing. It is a lightweight instrument that can be carried by a single person. Its unique 180 degrees 'anti-friction' slip-coupling system always ascertains the real friction between rods and soil.

Installation:

Sledge hammer, portable rock drill or pressed down.
Instrument accuracy: ±3% of full range.
Measurement range: 0-80kPa (0-8 T/m²) and 0-160kPa(0-16T/m²)

Kit Comprises

• Readout Instrument
• 10 extension rods 25mm x 1000mm
• 10 connection pieces
• Drive head, adaptor and lower part
• 2 spanners for extension rods
• Vane 75.8mm x 151.5mm 0-80kPa
• Vane 60mm x 120mm 0-160kPaExtractorBall cone clamp
• Crow bar
• Steel transport case

 Click to view a PDF file of the User Guide