... dáưm:hbn= 12 0 + 1, 2 = 12 1,2 (cm)[N]b|c= 10 615 ,482 (daN/cm2) Mc=603490,667473 416 19 64 418 3 JJMdcì=ì = 15 410 1 31, 49 (daN.cm) Nc=2 ,12 1 915 410 1 31, 4 hMbnc= = 12 714 6,3 (daN)nc=482 ,10 615 12 714 6,3 ... Wy/c= 210 01 19252500RMmaxì=ì = 916 7,857 (cm3)b= 7 + 10 0 18 9 ,10 637 10 0h3minì+=ì = 10 ,18 5 (mm) lỏỳy b = 1 cmhkt= 1, 15ì 0 ,1 857, 916 7 = 11 0 ,11 1 (cm)Choỹn hdc = 12 0 cmKiãøm tra âiãöu kiãûn bãön ... Jd=2ccc2bb2hb2 12 hììì+ìJd=232 11 82342 12 11 61 ììì+ì = 603490,667 (cm4)Wd= 12 0667,6034902hJ2ddì=ì = 10 058 ,17 8 (cm3) = 17 8 ,10 058 19 252500WMdmax= = 19 14 ,11 4 (daN/cm2)...