Ø em pol | Ø em mm | kg/m | Número de barras e a correspondente seção de ferros em cm² | ||||||||||||||
01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | |||
3/16 | 5.0 | 0.141 | 0.18 | 0.36 | 0.53 | 0.71 | 0.89 | 1.07 | 1.25 | 1.43 | 1.60 | 1.78 | 1.96 | 2.14 | 2.32 | 2.50 | 2.68 |
1/4 | 6.3 | 0.250 | 0.32 | 0.64 | 0.95 | 1.27 | 1.58 | 1.90 | 2.22 | 2.54 | 2.86 | 3.18 | 3.50 | 3.82 | 4.14 | 4.46 | 4.82 |
5/16 | 8.0 | 0.383 | 0.49 | 0.98 | 1.47 | 1.96 | 2.47 | 2.96 | 3.45 | 3.94 | 4.43 | 4.92 | 5.41 | 5.90 | 6.39 | 6.88 | 7.37 |
3/8 | 10.0 | 0.563 | 0.71 | 1.43 | 2.14 | 2.85 | 3.56 | 4.27 | 4.98 | 5.70 | 6.41 | 7.12 | 7.83 | 8.54 | 9.25 | 9.96 | 10.37 |
1/2 | 12.5 | 0.985 | 1.27 | 2.53 | 3.80 | 5.07 | 6.33 | 7.60 | 8.87 | 10.14 | 11.41 | 12.68 | 13.95 | 15.22 | 16.49 | 17.76 | 19.03 |
5/8 | 16.0 | 1.548 | 1.98 | 3.96 | 5.94 | 7.92 | 9.90 | 11.88 | 13.85 | 15.83 | 17.81 | 19.79 | 21.77 | 23.75 | 25.73 | 27.72 | 29.70 |
3/4 | 20.0 | 2.220 | 2.85 | 5.70 | 8.55 | 11.40 | 14.25 | 17.10 | 19.95 | 22.80 | 25.65 | 28.50 | 31.35 | 34.20 | 37.05 | 39.90 | 42.75 |
7/8 | 22.0 | 3.040 | 3.88 | 7.76 | 11.64 | 15.51 | 19.40 | 23.28 | 27.15 | 31.03 | 34.91 | 38.78 | 42.67 | 46.55 | 50.43 | 54.30 | 58.18 |
1 | 25.0 | 3.920 | 5.07 | 10.13 | 15.20 | 20.26 | 25.34 | 30.40 | 35.47 | 40.54 | 45.61 | 50.68 | 55.75 | 60.82 | 65.89 | 70.95 | 76.00 |
1 1/8 | 28.57 | 4.995 | 6.41 | 12.82 | 19.24 | 25.65 | 32.07 | 38.48 | 44.89 | 51.30 | 57.71 | 64.12 | 70.53 | 76.94 | 83.35 | 89.76 | 96.17 |
1 1/4 | 32.0 | 6.170 | 7.92 | 15.83 | 23.75 | 31.67 | 39.59 | 47.50 | 55.42 | 63.34 | 71.26 | 79.18 | 87.10 | 95.02 | 102.94 | 110.86 | 118.78 |
--- | 3.40 | 0.071 | 0.09 | 0.18 | 0.27 | 0.36 | 0.45 | 0.54 | 0.64 | 0.73 | 0.82 | 0.91 | 1.00 | 1.09 | 1.18 | 1.27 | 1.36 |
--- | 4.20 | 0.108 | 0.14 | 0.28 | 0.42 | 0.55 | 0.69 | 0.83 | 0.97 | 1.11 | 1.25 | 1.39 | 1.52 | 1.66 | 1.80 | 1.94 | 2.08 |
--- | 4.60 | 0.130 | 0.17 | 0.33 | 0.49 | 0.66 | 0.83 | 1.00 | 1.16 | 1.33 | 1.49 | 1.66 | 1.83 | 1.99 | 2.16 | 2.33 | 2.49 |