Structural Concrete - Hassoun

1002 Appendix A Design Tables (U.S. Customary Units)
Table A.13
Areas of Groups of Standard U.S. Bars in Square Inches
Number of Bars
Bar
Number
1 2 3 4 5 6 7 8 9 10 11 12
3 0.11 0.22 0.33 0.44 0.55 0.66 0.77 0.88 1.00 1.10 1.21 1.32
4 0.20 0.39 0.58 0.78 0.98 1.18 1.37 1.57 1.77 1.96 2.16 2.36
5 0.31 0.61 0.91 1.23 1.53 1.84 2.15 2.45 2.76 3.07 3.37 3.68
6 0.44 0.88 1.32 1.77 2.21 2.65 3.09 3.53 3.98 4.42 4.84 5.30
7 0.60 1.20 1.80 2.41 3.01 3.61 4.21 4.81 5.41 6.01 6.61 7.22
8 0.79 1.57 2.35 3.14 3.93 4.71 5.50 6.28 7.07 7.85 8.64 9.43
9 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00
10 1.27 2.53 3.79 5.06 6.33 7.59 8.86 10.16 11.39 12.66 13.92 15.19
11 1.56 3.12 4.68 6.25 7.81 9.37 10.94 12.50 14.06 15.62 17.19 18.75
14 2.25 4.50 6.75 9.00 11.25 13.50 15.75 18.00 20.25 22.50 24.75 27.00
18 4.00 8.00 12.00 16.00 20.00 24.00 28.00 32.00 36.00 40.00 44.00 48.00
Table A.14
Areas of Bars in Slabs (Square Inches per Foot)
Bar Number
Spacing
(in.) 3 4 5 6 7 8 9 10 11
3 0.44 0.78 1.23 1.77 2.40 3.14 4.20 5.06 6.25
3 1 0.38 0.67 1.05 1.51 2.06 2.69 3.43 4.34 5.36
2
4 0.33 0.59 0.92 1.32 1.80 2.36 3.00 3.80 4.68
4 1 0.29 0.52 0.82 1.18 1.60 2.09 2.67 3.37 4.17
2
5 0.26 0.47 0.74 1.06 1.44 1.88 2.40 3.04 3.75
5 1 0.24 0.43 0.67 0.96 1.31 1.71 2.18 2.76 3.41
2
6 0.22 0.39 0.61 0.88 1.20 1.57 2.00 2.53 3.12
6 1 0.20 0.36 0.57 0.82 1.11 1.45 1.85 2.34 2.89
2
7 0.19 0.34 0.53 0.76 1.03 1.35 1.71 2.17 2.68
7 1 0.18 0.31 0.49 0.71 0.96 1.26 1.60 2.02 2.50
2
8 0.17 0.29 0.46 0.66 0.90 1.18 1.50 1.89 2.34
9 0.15 0.26 0.41 0.59 0.80 1.05 1.33 1.69 2.08
10 0.13 0.24 0.37 0.53 0.72 0.94 1.20 1.52 1.87
12 0.11 0.20 0.31 0.44 0.60 0.79 1.00 1.27 1.56