Tension - N r
|
Shear - V r
|
Min . conc . |
|
= 20 MPa f ́c
( 2,900 psi )
|
= 30 MPa f ́c
( 4,350 psi )
|
≥ 20 MPa f ́c
( 2,900 psi )
|
thickness 8 in . ( mm ) |
lb ( kN ) |
lb ( kN ) |
lb ( kN ) |
1-3 / 4 |
2-1 / 2 |
835 |
905 |
1,040 |
2-1 / 4 |
670 |
725 |
715 |
( 44 ) |
( 64 ) |
( 3.7 ) |
( 4.0 ) |
( 4.6 ) |
( 57 ) |
( 3.0 ) |
( 3.2 ) |
( 3.2 ) |
1-7 / 8 |
2-1 / 2 |
1,195 |
1,310 |
865 |
2-1 / 4 |
640 |
700 |
1,510 |
( 48 ) |
( 64 ) |
( 5.3 ) |
( 5.8 ) |
( 3.8 ) |
( 57 ) |
( 2.8 ) |
( 3.1 ) |
( 6.7 ) |
2-1 / 2 |
2-1 / 2 |
1,690 |
1,865 |
1,350 |
2-1 / 4 |
1600 |
1,765 |
1,595 |
( 64 ) |
( 64 ) |
( 7.5 ) |
( 8.3 ) |
( 6.0 ) |
( 57 ) |
( 7.1 ) |
( 7.9 ) |
( 7.1 ) |
3
( 76 )
|
2-1 / 2
( 64 )
|
1,925
( 8.6 )
|
2,215
( 9.9 )
|
1,350
( 6.0 )
|
N / A |
N / A |
N / A |
N / A |
2 |
2-1 / 2 |
1,185 |
1,450 |
1,140 |
2-1 / 4 |
1,160 |
1,420 |
1,710 |
( 51 ) |
( 64 ) |
( 5.3 ) |
( 6.4 ) |
( 5.1 ) |
( 57 ) |
( 5.2 ) |
( 6.3 ) |
( 7.6 ) |
2-1 / 2 |
2-1 / 2 |
1,760 |
2,090 |
1,440 |
2-1 / 4 |
1,220 |
1,445 |
2,025 |
( 64 ) |
( 64 ) |
( 7.8 ) |
( 9.3 ) |
( 6.4 ) |
( 57 ) |
( 5.4 ) |
( 6.4 ) |
( 9.0 ) |
3-1 / 4
( 83 )
|
2-1 / 2
( 64 )
|
2,410
( 10.7 )
|
2,710
( 12.1 )
|
2,095
( 9.3 )
|
N / A |
N / A |
N / A |
N / A |
3-3 / 4 |
2-1 / 2 |
3,030 |
3,490 |
2,700 |
3-1 / 4 |
1,710 |
1,975 |
2,210 |
( 95 ) |
( 64 ) |
( 13.5 ) |
( 15.5 ) |
( 12.0 ) |
( 83 ) |
( 7.6 ) |
( 8.8 ) |
( 9.8 ) |
3-1 / 4 |
2-1 / 2 |
2,820 |
3,455 |
2,430 |
3-1 / 4 |
1,890 |
2,315 |
2,605 |
( 83 ) |
( 64 ) |
( 12.5 ) |
( 15.4 ) |
( 10.8 ) |
( 83 ) |
( 8.4 ) |
( 10.3 ) |
( 11.6 ) |
4-1 / 2
( 114 )
|
2-1 / 2
( 64 )
|
3,715
( 16.5 )
|
4,550
( 20.2 )
|
2,965
( 13.2 )
|
N / A |
N / A |
N / A |
N / A |
4
( 102 )
|
2-1 / 2
( 64 )
|
2,440
( 10.9 )
|
2,815
( 12.5 )
|
2,605
( 11.6 )
|
N / A |
N / A |
N / A |
N / A |
4-1 / 2 9
( 114 )
|
3-1 / 4
( 83 )
|
3,085
( 13.7 )
|
3,495
( 15.5 )
|
5,015
( 22.3 )
|
N / A |
N / A |
N / A |
N / A |
Tension - N r
|
Shear - V r
|
Min . conc . |
|
= 20 MPa f ́c
( 2,900 psi )
|
= 30 MPa f ́c
( 4,350 psi )
|
≥ 20 MPa f ́c
( 2,900 psi )
|
thickness 8 in . ( mm ) |
lb ( kN ) |
lb ( kN ) |
lb ( kN ) |
1-3 / 4 |
2-1 / 2 |
250 |
290 |
1,040 |
2-1 / 4 |
195 |
230 |
715 |
( 44 ) |
( 64 ) |
( 1.1 ) |
( 1.3 ) |
( 4.6 ) |
( 57 ) |
( 0.9 ) |
( 1.0 ) |
( 3.2 ) |
1-7 / 8 |
2-1 / 2 |
1,040 |
1,270 |
865 |
2-1 / 4 |
555 |
680 |
1,510 |
( 48 ) |
( 64 ) |
( 4.6 ) |
( 5.6 ) |
( 3.8 ) |
( 57 ) |
( 2.5 ) |
( 3.0 ) |
( 6.7 ) |
2-1 / 2 |
2-1 / 2 |
1,470 |
1,770 |
1,350 |
2-1 / 4 |
1,365 |
1,645 |
1,595 |
( 64 ) |
( 64 ) |
( 6.5 ) |
( 7.9 ) |
( 6.0 ) |
( 57 ) |
( 6.1 ) |
( 7.3 ) |
( 7.1 ) |
3
( 76 )
|
2-1 / 2
( 64 )
|
1,550
( 6.9 )
|
1,735
( 7.7 )
|
1,350
( 6.0 )
|
N / A |
N / A |
N / A |
N / A |
2 |
2-1 / 2 |
1,055 |
1,275 |
1,140 |
2-1 / 4 |
945 |
1,160 |
1,710 |
( 51 ) |
( 64 ) |
( 4.7 ) |
( 5.7 ) |
( 5.1 ) |
( 57 ) |
( 4.2 ) |
( 5.1 ) |
( 7.6 ) |
2-1 / 2 |
2-1 / 2 |
1,365 |
1,670 |
1,440 |
2-1 / 4 |
945 |
1,160 |
2,025 |
( 64 ) |
( 64 ) |
( 6.1 ) |
( 7.4 ) |
( 6.4 ) |
( 57 ) |
( 4.2 ) |
( 5.2 ) |
( 9.0 ) |
3-1 / 4
( 83 )
|
2-1 / 2
( 64 )
|
2,095
( 9.3 )
|
2,545
( 11.3 )
|
2,095
( 9.3 )
|
N / A |
N / A |
N / A |
N / A |
3-3 / 4 |
2-1 / 2 |
2,140 |
2,520 |
2,700 |
3-1 / 4 |
1,210 |
1,425 |
2,210 |
( 95 ) |
( 64 ) |
( 9.5 ) |
( 11.2 ) |
( 12.0 ) |
( 83 ) |
( 5.4 ) |
( 6.3 ) |
( 9.8 ) |
3-1 / 4 |
2-1 / 2 |
2,510 |
3,075 |
2,430 |
3-1 / 4 |
1,685 |
2,060 |
2,605 |
( 83 ) |
( 64 ) |
( 11.2 ) |
( 13.7 ) |
( 10.8 ) |
( 83 ) |
( 7.5 ) |
( 9.2 ) |
( 11.6 ) |
4-1 / 2
( 114 )
|
2-1 / 2
( 64 )
|
2,810
( 12.5 )
|
3,440
( 15.3 )
|
2,965
( 13.2 )
|
N / A |
N / A |
N / A |
N / A |
4
( 102 )
|
2-1 / 2
( 64 )
|
2,135
( 9.5 )
|
2,470
( 11.0 )
|
2,605
( 11.6 )
|
N / A |
N / A |
N / A |
N / A |
4-1 / 2
( 114 )
|
3-1 / 4
( 83 )
|
2,400
( 10.7 )
|
2,700
( 12.0 )
|
5,015
( 22.3 )
|
N / A |
N / A |
N / A |
N / A |