Design Code, EC2 BS8110 CP65   N/mm2    

Concrete strength ;
during demoulding fck_cube, 15 10 15 20 25 30 35 40 45 50   N/mm2 ,     installations stage, fck_cube 30 15 20 25 30 35 40 50   N/mm2 ,    

Conrete Density, γ_conc = 25 24   kN/m3 ,     steel rebar, f_st 460 485 500   N/mm2 ,     cover to reinforcements, 25 20 22.5 25 27.5 30 32.5 35 37.5 40 42.5 45 47.5 50 52.5 55 57.5 60 62.5 65 67.5 70   mm    

Reinforcements diameter, 10 6 8 10 12 13 16 20 25   mm     spacing, 200 50 60 75 80 90 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185 190 200 205 210 215 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 335 340 345 350   mm    

Adhesion to mould (oiled steel mould) Oiled steel mold, oiled plastic coated plywood - 1.3kN/m2 Oiled steel mold, oiled plastic coated plywood - 1.5kN/m2 Oiled steel mold, oiled plastic coated plywood - 1.6kN/m2 Oiled steel mold, oiled plastic coated plywood - 1.8kN/m2 Varnished wooden mold with panel boards - 2.0kN/m2 Varnished wooden mold with panel boards - 2.3kN/m2 Varnished wooden mold with panel boards - 2.5kN/m2 Varnished wooden mold with panel boards - 2.8kN/m2 Rough wooden mold - 3.0kN/m2 Rough wooden mold - 3.3kN/m2 Rough wooden mold - 3.5kN/m2 Rough wooden mold - 3.8kN/m2      

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