Purchase of Equipments for Soil Mechanics and Foundation Engineering for Civil Dept

SPRING TESTING MACHINE Load & Displacement Sensing • Load Cell • Capacity: 0–10 kN • Accuracy: ±1% FS (better if ±0.5%FS) • Displacement Sensor • LVDT / Digital encoder • Accuracy: ±0.5 mm Machine Design • Frame: Rigid steel frame with crosshead • Movement Type: • Mechanical Screw with Hand Wheel (simple & robust) or • Electromechanical Actuator (for smoother, controlled motion) • Crosshead Travel: ~150–200 mm • Safety Guards: Transparent shields around moving parts Fixtures & Accessories Spring Testing • Compression Plates (ground & parallel) • Tension Hooks / Eyelets • For extension springs • Set of spacers / adapters for small springs Tensile Testing • Standard Tensile Grips • Wedge or screw type • Calibration certificate for load cell Standards Compliance Ensure compliance with basic material test standards such as: • ASTM E4 / ISO 7500-1 — Calibration of force measurement • ASTM E8 / ISO 6892 — Tensile Performance & Accuracy • Load accuracy: ±1% FS • Displacement accuracy: ±0.5% • Repeatability: ±0.5%

DIRECT SHEAR MACHINE Standard Compliance: The equipment shall confirm to Bureau of Indian Standards IS 2720 (Part 13) and equivalent ASTM International ASTM D3080. Technical Specifications: Shear Box Size: 60 mm × 60 mm × 25 mm specimen size (complete with grid plates, porous stones, and specimen cutter). Normal Load Capacity: Minimum 5 kN with loading yoke and calibrated loading hanger set. Shear Load Capacity: Minimum 2.5 kN or 5 kN with calibrated proving ring (with calibration certificate). Rate of Strain (Shear Displacement): Variable speed drive with controlled displacement ranging from 0.01 mm/min to 1.25 mm/min (motorised model preferred for uniform rate control). Displacement Measurement: Horizontal displacement dial gauge: 0.01 mm least count Vertical displacement dial gauge: 0.002 mm or 0.01 mm least count Loading Frame: Rigid, heavy-duty loading frame with corrosion-resistant finish. Drive System: Motorised with single phase 220–230 V, 50 Hz power supply. Accessories (to be supplied complete): Shear box assembly, Proving ring with calibration chart, Two dial gauges Loading weights and hanger, Porous stones (2 Nos.), Specimen cutter, Tool kit