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Waste Water Tank (166-T-501) Thursday, January 19, 2012 4:45 PM shell thickness 6 mm shell weight 7850 x (pi*14*12.5*0.006) = 25895 kg roof weight 250 kg/m2 * (pi*14^2/4) = 38485 kg Astaga…. wow… Saya ngga tau apakah saya yang katrok atau memang ketinggalan jaman.. Tapi… this is so cooooooooll… absolutely […]