vara u NDO Observation and Calculation Table: (TRIAXIAL TEST) The machine is set in motion (or if hand operated the hand wheel is turned at a constant rate) to give a rate of strain 2% per minute. The strain dial gauge reading is then taken and the corresponding proving ring reading is taken the corresponding proving ring chart. The load applied is known. The experiment is stopped at the strain dial gauge reading for 15% length of the sample or 15% strain. i. ii. Size of specimen : Length: Proving ring constant : Diameter: 3.81 cm iii. iv. V. Initial area L: vi. Initial Volume Strain dial least count (const): vii. Sampl e No. Wet bulk density gm/cc Cell pressur e kg/cm Compressi ve stress at failure Strain at failure Moisture content Shear Angle of strength shearing (kg/cm) resistance 1 2 3 Proving ring reading Load on sample kg Corrected area cm Deviator stress Cell pressure Strain dial kg/cm 0 50 100 150 200 0.5 250 300 350 400 450 0.5 0 50 100 150 200 250 300 350 400 450 0.5 0 50 100 150 200 250 300 350 400 450 Observation and Calculation Table: (DIRECT SHEAR TEST) 1. Size of Soil Sample = Internal Dimensions of the Box 2. Weight of yoke, w1=0.775kg 3. Weight of Loading pad, w2=0.620kg 4. Lever Ratio = 1:5 5. Proving ring Number = 6. Proving ring Constant (K): 1 Division = kg 7. Rate of strain for Horizontal Shear = 1.25 mm/min Load on yoke (w) (kg) Normal load on soil sample (N) Normal stress Proving ring division at failure vara u NDO Observation and Calculation Table: (TRIAXIAL TEST) The machine is set in motion (or if hand operated the hand wheel is turned at a constant rate) to give a rate of strain 2% per minute. The strain dial gauge reading is then taken and the corresponding proving ring reading is taken the corresponding proving ring chart. The load applied is known. The experiment is stopped at the strain dial gauge reading for 15% length of the sample or 15% strain. i. ii. Size of specimen : Length: Proving ring constant : Diameter: 3.81 cm iii. iv. V. Initial area L: vi. Initial Volume Strain dial least count (const): vii. Sampl e No. Wet bulk density gm/cc Cell pressur e kg/cm Compressi ve stress at failure Strain at failure Moisture content Shear Angle of strength shearing (kg/cm) resistance 1 2 3 Proving ring reading Load on sample kg Corrected area cm Deviator stress Cell pressure Strain dial kg/cm 0 50 100 150 200 0.5 250 300 350 400 450 0.5 0 50 100 150 200 250 300 350 400 450 0.5 0 50 100 150 200 250 300 350 400 450 Observation and Calculation Table: (DIRECT SHEAR TEST) 1. Size of Soil Sample = Internal Dimensions of the Box 2. Weight of yoke, w1=0.775kg 3. Weight of Loading pad, w2=0.620kg 4. Lever Ratio = 1:5 5. Proving ring Number = 6. Proving ring Constant (K): 1 Division = kg 7. Rate of strain for Horizontal Shear = 1.25 mm/min Load on yoke (w) (kg) Normal load on soil sample (N) Normal stress Proving ring division at failure
