Large-scale Direct Shear

Direct shear tests is an important in the case of Geotechnical Engineering (Soil Mechanics and Foundation) to determine soil strength parameters in terms of consolidated-drained (CD). In this test, first soil under the specific vertical stress become consolidated, then while stabilizing vertical stress, shear stress is set to speed, apply to soil sample until the sample is ruptured. The maximum shear stress for a specific vertical stress, gives the coordinates of a point. Tests are usually performed with three different vertical stress and thus coordinate system "shear stress - vertical stress" three points is obtained that draw the best line passing through the points, soil strength parameters of (C, Φ) are determined.

Direct shear test apparatus, which is manufactured by Soil Mechanic Industries of Iran Co., designed and produced accordance with international standards such as ASTM.

Standards:

ASTM D3080, BS EN 1377,

Technical Specifications:

Description	Direct Shear Apparatus 30×30 Cm Model DSH700	Direct Shear Apparatus 30×30 Cm Model DSH701
Ordering Code	SMSO-7200	SMSO-7201
Dimension (L×W×H)	205×60×175 Cm
Weight approx	510 Kg Without weights
Set of Weights	224Kg = 9×20Kg + 2×10Kg + 2×5Kg + 2×4Kg + 2×3Kg + 2×0.5Kg
Beam Ratio	1:20
Sample Size	30×30 Cm
Load ring / Loadcell Capacity¹	5000 Kg_f²	5 Ton
Horizontal Dial Gauge / Horizontal Sensor Capacity	0-50 mm, 0.01	0-75 mm, 0.01
Vertical Dial Gauge / Vertical Sensor Capacity	0-20 mm, 0.01	0-25 mm, 0.01
Max. Horizontal Displacemen	50 mm
Max. Horizontal Load	5000 Kg_f	5000 Kg_f
Max. Vertical Stress	10 Kg_f/Cm²	10 Kg_f/Cm²
Uploading Speed Range	0.001-12 mm/min	0.001-12 mm/min
Mini. Shear Speed	0.001 mm/min	0.001 mm/min
Max. Shear Speed	12 mm/min	12 mm/min
Power Supply	220 V, 260 W	220 V, 260 W
Data Logger Unit³	Have Not	Has It

Ability to change the capacity of load cell/force sensor according to buyer's requirements are available.
Shear force capacity up to 10,000 kg_f
Data Logger Unit:

16 bit.
3 input channels.
Velocity of sampling: Up to 10 samples per second.
Reading and Recording software included.
Software of Analyzing results and Drawing necessary diagrams (Customized).

The other features of Direct Shear Apparatus:

Equipped with a keyboard and touch screen.

Automatic sensor-breakers for over limit displacement of the loading piston.

Capability of loading speed calibration by keyboard.

Capability of connecting to PC to troubleshooting the Set.

Special Capability of custom models:

Ability to display and print the process and test results without connecting to a computer.

Remote control possibility of devices.

Ability to change the vertical load from weights to pneumatic system.

Sampling and Shearbox Accessories

Description	Ordering Code	Weight approx Kg	Outside Dimension Cm	Inside Dimension Cm	Material
15×15 Cm Shearbox	SMSO-7340	30	30×30×14.5	15×15×10	Stainless steel
20×20 Cm Shearbox	SMSO-7350	35	30×30×15.5	20×20×12.6	Stainless steel
30×30 Cm Shearbox	SMSO-7360	90	66×38×33	30×30×18	Stainless steel
Saturated Boxes of Direct Shear	SMSO-7395	60	55×45×17	47×42×16	Stainless steel
Sampling Rammer	SMSO-7399	2.3	10×10×20		CK45