Recatangular

rectangular beams
Section Properties
Designation b(in.) h(in.) A(in.2) Yb (in.) I(in.4) Sb(in.3) wt (plf)
16RB24 16 24 384 12 18432 1536 400
16RB28 16 28 448 14 29269 2091 590
16RB32 16 32 512 16 43691 2731 674
16RB36 16 36 576 18 62208 3456 758
16RB40 16 40 640 20 85333 4267 842
20RB24 20 24 480 12 23040 1920 632
20RB28 20 28 560 14 36587 2613 737
20RB32 20 32 640 16 54613 6413 842
20RB36 20 36 720 18 77760 4320 947
20RB40 20 40 800 20 106667 5333 1053
24RB28 20 28 560 14 36587 2613 737
24RB32 20 32 640 16 54613 3413 842
24RB36 20 36 720 18 77760 4320 947
24RB40 20 40 800 20 106667 5333 1053
Safe Superimposed Load Capacity (psf)
Desig. Strand 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52
16RB24 14.8 9050 7360 6100 6130 4360 3750 3240 2840 2460 2150 1940 1720 1540 1380 1230 1100  
16RB28 16.8   9900 8430 7100 6080 5200 4500 3920 3480 3060 2740 2430 2170 1960 1770 159 1440
16RB32 18.0       9350 7990 6870 5980 5230 4600 4050 3620 3250 2900 2620 2350 2130 1950
16RB36 20.8         9900 8780 7620 6700 5900 5230 4680 7470 3760 3400 3060 2780 2540
16RB40 22.8           9900 9520 8320 7340 6530 5860 5230 4730 4260 3860 3500 3200
20RB24 16.8 9900 8230 6820 5730 4860 4160 3600 3130 2740 2400 2120 1880 1670 1490 1330 1150  
20RB28 18.8   9900 9600 8100 6900 5900 5100 4470 3930 3450 3070 2740 2430 2190 1950 1760 1590
20RB32 20.8       9900 8100 7860 6800 5980 5230 4650 4120 3690 3300 2950 2670 2410 2180
20RB36 20.8           9900 8700 7650 6720 5960 5310 4730 4260 3820 3460 3140 2850
20RB40 24.8             9900 9580 8480 7500 6700 6000 5400 4870 4400 4000 3640
24RB28 20.8     9900 9200 7830 6720 5800 5060 4450 3900 3470 3080 2750 2460 2200 1970 1780
24RB32 22.8         9900 8950 7750 6800 5960 5280 4690 4170 3740 3350 3020 2730 2460
24RB36 24.8             9900 8700 7620 6770 6000 5390 4830 4350 3930 3540 3200
24RB40 26.8               9900 9500 8400 7500 6700 6020 5440 4900 4430 4050

Notes:

Load Charts are intended for preliminary design only.
Max tension allowed under full loading = 850 psi, therefore, additional top reinforcement is required.
Design criteria ACI 318-02.
Concrete strength at 28 days (f`c) = 6000 psi.
Design charts assume simple span.
Safe loads shown include 50% dead load and 50% live load.
Deflections must be checked according to design criteria.