Optimum Moisture Content / Maximum Dry Density

(2.5  kg / 4.5  kg)

BS1377 Part 4 Clause 3 STC NSTC STC NSTC STC NSTC
25 kg 10 kg 25 kg 10 kg 80 kg 50 kg
Optimum Moisture Content / Maximum Dry Density (Vibrating Hammer) BS1377 Part 4 Clause 3 STC NSTC STC NSTC STC NSTC
80 kg 50 kg 80 kg 50 kg 80 kg 50 kg
Laboratory California Bearing Ratio (CBR) BS1377 Part 4 Clause 7 6 kg 6 kg 12 kg
Moisture Condition Value (MCV) BS1377 Part 4 Clause 5 3 kg 3 kg 6 kg
Maximum / Minimum Density BS1377 Part 4 Clause 4 2 kg – 6 kg 2 kg – 6 kg 10 kg – 16 kg
Chalk Crushing Value (CCV) BS1377 Part 4 Clause 6 For each point 1 kg passing 20 mm retained 10 mm

Note – STC = Susceptible to Crushing – NSTC = Not Susceptible to Crushing