1.1This specification covers deformed and plain low-carbon, chromium, steel bars, in cut lengths and coils for concrete reinforcement. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1.
Bar Designation |
Nominal Weight, lb/ft |
Nominal DimensionsA |
Deformation Requirements, in. [mm] |
||||
Diameter, |
Cross-Sectional |
Perimeter |
Maximum |
Minimum |
Maximum Gap |
||
3 [10] |
0.376 [ 0.560] |
0.375 [ 9.5] |
0.11 [ 71] |
1.178 [ 29.9] |
0.262 [ 6.7] |
0.015 [0.38] |
0.143 [ 3.6] |
4 [13] |
0.668 [ 0.994] |
0.500 [12.7] |
0.20 [ 129] |
1.571 [ 39.9] |
0.350 [ 8.9] |
0.020 [0.51] |
0.191 [ 4.9] |
5 [16] |
1.043 [ 1.552] |
0.625 [15.9] |
0.31 [ 199] |
1.963 [ 49.9] |
0.437 [11.1] |
0.028 [0.71] |
0.239 [ 6.1] |
6 [19] |
1.502 [ 2.235] |
0.750 [19.1] |
0.44 [ 284] |
2.356 [ 59.8] |
0.525 [13.3] |
0.038 [0.97] |
0.286 [ 7.3] |
7 [22] |
2.044 [ 3.042] |
0.875 [22.2] |
0.60 [ 387] |
2.749 [ 69.8] |
0.612 [15.5] |
0.044 [1.12] |
0.334 [ 8.5] |
8 [25] |
2.670 [ 3.973] |
1.000 [25.4] |
0.79 [ 510] |
3.142 [ 79.8] |
0.700 [17.8] |
0.050 [1.27] |
0.383 [ 9.7] |
9 [29] |
3.400 [ 5.060] |
1.128 [28.7] |
1.00 [ 645] |
3.544 [ 90.0] |
0.790 [20.1] |
0.056 [1.42] |
0.431 [10.9] |
10 [32] |
4.303 [ 6.404] |
1.270 [32.3] |
1.27 [ 819] |
3.990 [101.3] |
0.889 [22.6] |
0.064 [1.63] |
0.487 [12.4] |
11 [36] |
5.313 [ 7.907] |
1.410 [35.8] |
1.56 [1006] |
4.430 [112.5] |
0.987 [25.1] |
0.071 [1.80] |
0.540 [13.7] |
14 [43] |
7.65 [11.38 ] |
1.693 [43.0] |
2.25 [1452] |
5.32 [135.1] |
1.185 [30.1] |
0.085 [2.16] |
0.648 [16.5] |
18 [57] |
13.60 [20.24 ] |
2.257 [57.3] |