Dutch design method - ICPA

Dutch design method - CRCPMinimum percentage of longitudinal reinforcement toprevent yield of steel bars ø = 16 mm:C28/35: ωo,min = 0.41%C35/45: ωo,min = 0.47%Maximum crack widthwo,max vs. percentage oflongitudinal reinforcementω (steel barsø = 16 mm) for 250 mmconcrete C35/45maximum crack width (mm)10,90,80,70,60,50,40,30,20,100,4 0,45 0,5 0,55 0,6 0,65 0,7 0,75 0,8percentage of reinforcement (%)e = 0 mm (w-all = 0.40 mm)e = 10 mm (w-all = 0.40 mm)e = 25 mm (w-all = 0.40 mm)e = 35 mm (w-all = 0.40 mm)e = 50 mm (w-all = 0.40 mm)e = 80 mm (w-all = 0.21 mm)Allowable crack width 0.2-0.4 mm (cover); emax = 25 mm26 October 2009 93