Bone Dry Tonnes Calculator - Hydrasurvey Bone Dry Tonnes Calculator Total Volume Dredged (cubic metres): Specific Gravity (grams per liter): Total Solids (%): Calculate Dewatered Material Calculator Dredgeable Sludge Volume (cubic metres): Concentration (%): Solids pumped with dredge (%): 4 5 6 7 8 Concentration of solids (after dewatered) (%): 18 19 20 21 22 23 24 25 26 27 Calculate Contact us Name * First Name Last Name Email * Subject * Message * Thank you!