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S1000 Soil Bore Hole Shear Apparatus (BST)

This apparatus, now widely accepted, offers a simple means for directly measuring shearing strength of fine to medium grained soils in-situ. The principal advantages are minimum sample disturbance, ease and speed of testing and on-site evaluations. The bore hole shear test is analogous to a lab direct shear test or more closely to a simple shear test with free drainage. It is referred to as a consolidated, drained test with pore pressures negative or near zero.

The apparatus was originally developed by Professor Richard Handy and associates at Iowa State University. The bore hole test involves drilling a smooth hole about 3" in diameter, inserting an expandable shear head, expanding the two opposing shear plates against the walls of the hole under a known normal pressure allowing time for consolidation, and then slowly pulling the plates until shearing occurs.

The complete apparatus includes standard and high pressure shear plates, 3" (75mm) shear head with pore pressure port, 25 (7.6m) pull rod, insertion tool and connecting pipes, dynamometer base plate, molded aluminum case with built-in console for CO2 and spare CO2 bottle. Gauges read directly in soil stresses (Ksf, psi or kPa can be specified when ordering). A separate air pump (for emergency use) is available as an option.
Shipping Weight: 80 lb (16kg); 2.5 cu. ft

S1002 Air Operated Bore Hole Shear Tester (BST)

This apparatus, identical in most respects to S1000, uses a screw adjustable, calibrated hand pump to apply normal stress eliminating necessity to have CO2 under pressure. This is used in place of the console. A larger aluminum carrying case is included.
Shipping Weight: 35 lb (16kg); 2.5 cu. ft.

S1010 Bore Hole Depth Kit

This extends effective range from 25 to 50.
Shipping Weight: 68 lb (31kg); 2 cu. ft.

S1011 BST Pore Pressure System

Attaching to the shear head, this is used to assure a drained condition. It includes transducer, digital display, and rechargeable battery pack.

S1015 Field Repair Kit

The repair kit is useful for maintaining bore hole apparatus. It includes rolling diaphragms, seals, pull strap, etc.

Related Items:
S1025 Rock Bore Hole Shear Tester
S1050 Back Pressured Ko Stepped Blade

This item is part of the following categories:

Other items in the in-situ category include:

S1025 Rock Bore Hole Shear Tester
S1000 Soil Bore Hole Shear Apparatus (BST)
E-1006A Double Ring Infiltrometer Apparatus
D1130 Drill Rod with Coupling AW
E-1320 Stork motorized Cathead for Lifting Hammer
E-920 Clegg Impact Soil Tester 4.5kg
D1230 Soil Sampling Tube Kit 18
D1220 Auger-Tube Kit
E-910.2 Cone and Staff 0.2 sq. in.
E-901 Proctor Penetrometer
E-1314 Wildcat Dynamic Vane Log Program
D1140 Sealing Wax, 1 lb block
D1310-D1345 Power Soil Drill Accessories
D1300 Power Soil Drill
D1200 Soil Auger
S1050 Back Pressured Ko Stepped Blade
D1100 Soil Sampling Kit
D1105 Hand Hammer Assembly 35 lb
D1110 Heavy Duty Split Spoon Sampler 2,,
D1350 Tripod Lifting Frame Kit
U-2200-U-2207 Sample Bags
U-2221 Sample Jars
E-810 Agricultural Soil Moisture Tester
E-815 Soil pH and Moisture Meter
E-825 Soil Compaction Penetrometer
E-840 Irrometers for Soil Moisture
E-1100 Nilcon Field Vane Apparatus
E-1150 Static Penetrometer, Recording
D1345 Bucket Auger 4 for Power Soil Drill
E-1310 Cone Tips
E-1315 Sounding Rods
E-803 Carbide (Speedy) Moisture Reagent
E-910.1 Extension 19
(for Cone Penetrometer)
S1002 Air Operated Bore Hole Shear Tester (BST)
S1010 Bore Hole Depth Kit
S1011 BST Pore Pressure System
S1015 Field Repair Kit
E-1312 Shear Vane
E-1206 Soil Box Leads
E-1205 Soil Boxes, Resistivity
U-2210 Sample Cans
E-1200 Soil Resistivity Meter
S1098-S1112 Water Level Indicators
E-910 C of E Cone Penetrometer
E-850 Soil Assessment Cone Penetrometer
E-1280 TRL Dynamic Cone Penetrometer
E-1300 Dynamic Cone Penetrometer
E-1318 Torque Wrench with socket and hex key
E-1210 Resistivity Test Reel with Soil Pins, 20
D1210 Iwan Augers
E-960 Soil Trafficability Set
E-801 Speedy 2000 Type Carbide Moisture Tester
E-1005A Double Ring Infiltrometer Set
E-1130A Borehole Vane Shear Test Set
E-1215 Soil Resistivity Test Kit
D1115H Shelby Tube, Thin Wall Sampler 3,,

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Geotest Instrument Corporation
241 S. Frontage Road., Suite 38
Burr Ridge,IL 60527 USA