... 20789770 ,117 0,42890 100 8 ,5 nMA AR b h 0 ,5. 1 1 2. 0 ,5. 1 1 2.0 ,117 0,94A 20789774, 95 .2000 0,94 8 ,5 aaMF cmR h Dự kiến dùng thép 8 có fa = 0 ,50 3 cm2. ... 0 ,5. 1 1 2. 0 ,5. 1 1 2.0,0 45 0,977A TÝnh to¸n « sµn sè 5 AGamaFaChäna tta chänFa chän%g=369,40m 11 =0,04876P= 55 14,26MI=240,7 5 0,0370,9811,443619,61201,420,17p=360,00m12=0,01668P'=1360,80M1=149,170,0230,9880,888631,88201,420,17l1=2,10m91=0,01994P''=4 15 3,46l2=3,60m92=0,00680MII=82,600,0130,9940,4896 57 ,87201,420,17l2/l1=1,71k91=0,04366M2= 50 ,940,0080,9960,301694,07201,420,17k92=0,01498cạnhÔ ... 02 20 456 300,07 0,42890 100 8 ,5 nMA AR b h 0 ,5. 1 1 2. 0 ,5. 1 1 2.0,07 0,964A 20 456 302,7 85 .2000 0,964 8 ,5 aaMF cmR h Dự kiến dùng thép 6 có fa =...