محاسبه وزن مخصوص آب 4 درجه سانتيگراد(KN/m3):

Specific Weight Water:

Specific weight for water at 39 oF (4 oC) is 62.4 lb/ft3 (9.81 kN/m3) in imperial units. Specific weight in SI units can be calculated like

γ = ρ g

where

γ = specific weight (N/m3)
ρ = density (kg/m3)
g =Acceleration of gravity (m/s2)

γ = (1000 kg/m3) (9.81 m/s2)
= 9810 N/m3
= 9.81 kN/m3