Size(in)Approx. Wtper ft (lbs)Nominal Breaking Load (lbs)I. P. S.FC IWRC FC IWRC FC IWRC14 0.015 0.116 4, 940 5, 300 5, 430 6, 120516 0.164 0.18 7, 660 8, 240 8, 440 9, 48038 0.236 0.26 10, 980 11, 800 12, 090 13, 600716 0.32 0.35 14, 880 16, 000 16, 380 18, 36012 0.42 0.46 19, 260 20, 700 21, 240 24, 000916 0.53 0.59 24, 300 26, 100 26, 820 30, 20058 0.66 0.72 30, 000 32, 200 32, 940 37, 00034 0.95 1.04 42, 800 46, 000 47, 160 53, 00078 1.29 1.42 58, 000 62, 200 63, 720 71, 6001 1.68 1.85 75, 200 80, 800 82, 800 93, 0001-18 2.13 2.34 94, 600 101, 800 104, 040 117, 0001-14 2.63 2.89 116, 200 125, 000 127, 980 143, 8001-38 3.18 3.50 139, 800 150, 400 153, 900 172, 8001-12 3.78 4.16 165, 600 178, 000 181, 800 206, 0001-58 4.44 4.88 192, 600 207, 000 212, 400 238, 0001-34 5.15 5.67 224, 000 240, 000 246, 600 276, 0001-78 5.91 6.50 254, 000 274, 000 280, 800 314, 0002 6.72 7.39 288, 000 310, 000 316, 800 356, 000