{"product_id":"field-vane-shear-tester","title":"Field Vane Shear Tester","description":"\u003cp\u003eDetermine the in-situ undrained shear strength of cohesive soils quickly and reliably in the field. The Field Vane Shear Tester features a robust torsional spring mechanism, drag ring for easy read-out, and three interchangeable vanes to cover a wide range of soil strengths — from very soft to stiff clays. Supplied complete with six 0.5m extension rods for testing at depth.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Is a Field Vane Shear Test?\u003c\/h2\u003e\n\u003cp\u003eThe field vane shear test is one of the most reliable and widely used in-situ methods for measuring the undrained shear strength (Su) of soft to firm cohesive soils. By rotating a four-bladed vane into undisturbed soil and measuring the torque required to shear the soil cylinder, the test gives direct, rapid results — without the delays and sample disturbance associated with laboratory testing.\u003c\/p\u003e\n\u003cp\u003eThe method is standardised under ASTM D2573 and is routinely used across geotechnical site investigations, earthworks assessment, foundation design, and soft ground construction projects.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe GeoSite Supply Field Vane Shear Tester is a portable, hand-operated instrument designed to determine in-situ undrained shear strength in clays and cohesive soils. Robust, accurate, and simple to operate, it is equally suited to trial pit testing, shallow borehole testing, and top-of-sample measurements on undisturbed tube samples in the field.\u003c\/p\u003e\n\u003cp\u003eThe instrument comprises a T-handle body housing a calibrated torsional spring, a drag ring indicator for read-out convenience, and three interchangeable vanes of different sizes. A dummy is supplied for zero calibration, and six 0.5m extension rods allow the vane to be advanced to a maximum depth of 3 metres.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMeasures in-situ undrained shear strength of clays and cohesive soils\u003c\/li\u003e\n\u003cli\u003eMeasuring range 0–260 kPa with 5 N·m torque spring\u003c\/li\u003e\n\u003cli\u003eThree interchangeable vanes (small, medium, large) — all with 2:1 height\/diameter ratio per ASTM D2573\u003c\/li\u003e\n\u003cli\u003eDrag ring for easy peak torque read-out\u003c\/li\u003e\n\u003cli\u003eDummy included for zero-point calibration before each test\u003c\/li\u003e\n\u003cli\u003eSix 0.5m extension rods for testing to 3m depth\u003c\/li\u003e\n\u003cli\u003eCompact and lightweight — suitable for trial pit work, borehole top and tube sample testing\u003c\/li\u003e\n\u003cli\u003eCompliant with ASTM D2573\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Use Each Vane\u003c\/h2\u003e\n\u003cp\u003eThe correct vane size depends on the expected strength of the soil being tested:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge vane (50.8 × 25.4 mm)\u003c\/strong\u003e — use in very soft to soft clays with low expected shear strength\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium vane (40 × 20 mm)\u003c\/strong\u003e — use in soft to firm clays\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall vane (32 × 16 mm)\u003c\/strong\u003e — use in firm to stiff clays where higher torque readings are expected\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGeotechnical site investigations — trial pit and shallow borehole assessment\u003c\/li\u003e\n\u003cli\u003eFoundation design and soft ground assessment\u003c\/li\u003e\n\u003cli\u003eEmbankment and earthworks stability studies\u003c\/li\u003e\n\u003cli\u003eMarine and coastal soil investigations\u003c\/li\u003e\n\u003cli\u003eContaminated land and environmental assessments\u003c\/li\u003e\n\u003cli\u003eTeaching and laboratory demonstration of in-situ testing principles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStandard\u003c\/h2\u003e\n\u003cp\u003eASTM D2573 — Standard Test Method for Field Vane Shear Test in Cohesive Soil\u003c\/p\u003e\n\n\u003ch2\u003eSupplied Complete With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Spring torque meter (T-handle body with torsional spring and drag ring)\u003c\/li\u003e\n\u003cli\u003e3 × Interchangeable vanes (small, medium, large)\u003c\/li\u003e\n\u003cli\u003e6 × Extension rods, 0.5m each, Ø10mm\u003c\/li\u003e\n\u003cli\u003e1 × Dummy for zero calibration\u003c\/li\u003e\n\u003cli\u003e1 × 8mm spanner\u003c\/li\u003e\n\u003cli\u003e1 × 17mm spanner\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 260 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpring Torque Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtension Rod Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 m per rod\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtension Rod Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eØ 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Extension Rods\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 (maximum depth 3 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVane Height\/Diameter Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2:1 (all vanes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmall Vane\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 × 16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedium Vane\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 × 20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLarge Vane\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50.8 × 25.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTest Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASTM D2573\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupplier Reference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16-T0174\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eAvailability and Dispatch\u003c\/h2\u003e\u003cp\u003eAvailability and lead times vary by product. Some items are held in stock, while others are ordered from our suppliers. Please contact us through the contact option available on this sales channel before ordering if you require confirmation of availability or delivery times.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Geo Site Supply?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFree standard UK delivery\u003c\/li\u003e\n\u003cli\u003eWorldwide delivery available\u003c\/li\u003e\n\u003cli\u003eSecure checkout\u003c\/li\u003e\n\u003cli\u003eProduct suitability and technical support available through this sales channel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Geo Site Supply ","offers":[{"title":"Default Title","offer_id":54209745748310,"sku":null,"price":1295.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3056\/8534\/files\/field-vane-shear-tester-featured_66d3e04e-3419-4df6-8d74-c65fd348cd7f.png?v=1785868318","url":"https:\/\/www.geositesupply.com\/products\/field-vane-shear-tester","provider":"Geo Site Supply ","version":"1.0","type":"link"}