Reinforcing Steel

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rebar.JPG (603194 bytes) The reinforcement data charts shown below were developed based on the American ACI 318-95 & 318M-95 specifications.

ENGLISH REINFORCING DIMENSIONS                                                                                                

BAR

AREA

NOMINAL

OVERALL

TYP

MINIMUM

TYP

SIZE

 

DIAMETER

DIAMETER

*ld

ld

**lhd

 

(sq-inch)

(inch)

(inch)

(inch)

(inch)

(inch)

#3

0.11

0.375

0.438

14

12

6

#4

0.20

0.500

0.563

19

12

7

#5

0.31

0.625

0.688

24

14

8

#6

0.44

0.750

0.875

28

17

10

#7

0.60

0.875

1.000

42

25

12

#8

0.79

1.000

1.125

47

28

13

#9

1.00

1.128

1.250

54

32

15

#10

1.27

1.270

1.438

60

36

17

#11

1.56

1.410

1.625

67

40

19

#14

2.25

1.693

1.875

80

48

32

#18

4.00

2.257

2.500

107

64

43


NOTES:                                                                                         

1. Development length based on ACI 318-95 with:  fy = 60000 psi, f'c = 4000 psi

2. Minimum ld required to prevent rebar pullout       

                                                                                                                 

*ld for clear spacing of 2db and clear cover not less than db                        

**lhd includes 0.7 factor for 2.5 in cover on sides and 2 in cover on end of hook

METRIC REINFORCING DIMENSIONS                                                  

BAR

AREA

NOMINAL

OVERALL

TYP

MINIMUM

TYP

SIZE

 

DIAMETER

DIAMETER

*ld

ld

**lhd

 

(sq-mm)

(mm)

(mm)

(mm)

(mm)

(mm)

#10

71

9.5

11.1

383

300

150

#13

129

12.7

14.3

512

307

178

#16

199

15.9

17.5

641

385

223

#19

284

19.1

22.2

770

462

267

#22

387

22.2

25.4

1119

671

311

#25

510

25.4

28.6

1280

768

356

#29

645

28.7

31.8

1446

868

402

#32

819

32.3

36.5

1628

977

452

#36

1006

35.8

41.3

1804

1083

501

#43

1452

43.0

47.6

2167

1300

860

#57

2581

57.3

63.5

2888

1733

1146


NOTES:                                                                                         

1. Development length based on ACI 318-95M with:  fy = 420 MPa, f'c = 25 MPa

2. Minimum ld required to prevent rebar pullout       

                                                                                                                 

*ld for clear spacing of 2db and clear cover not less than db                        

**lhd includes 0.7 factor for 60 mm cover on sides and 50 mm cover on end of hook
 

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