... 73 TCVN 55 75 -1 9 91 ta ®îc: x1 = 1, 9 - 0,1m - 0,02.(6 - m) l = 1, 839 Þ m’x1 = x1mx1 = 1, 839.0, 055 = 0 ,10 . Tra b¶ng 74 TCVN 55 75 -1 9 91 theo xtdl vµ m’x1 ta ®îc: jltx1 = 0,97 ... 3 413 3336 014 8 .10 .1, 23060776 .10 .3,3292 410 .10 .1, 2 656 ++ = 51 2 820 kG/cm2. Eyt® = 3 413 3336 014 8 .10 .1, 2324 51 8 6 .10 .3, 310 8000 .10 .1, 2 656 ++ = 417 194 kG/cm2. Axt® = 51 2 820 56 ,78 .10 .1, 244 ,58 53 .10 .3,3468 .10 .1, 2 656 ++ = 6004, 85 cm2. ... ++ = 3 413 3336 014 8 .10 .1, 2324 51 8 6 .10 .3, 310 8000 .10 .1, 2 656 ++ = 417 194 kG/cm2. Axt® = xtdrrccsxEAEAEAE ++ = 51 2 820 56 ,78 .10 .1, 204 ,58 75 .10 .3,34,446 .10 .1, 2 656 ++ = 59 30,30 cm2....