Steel rebar

Bond length (mm)

Concrete cover (mm)

Max. load (kN)

Bond stress (MPa)

Rebar stress (MPa)

D10

9.5

9.5

9.5

19

28.5

28.5

28.5

9.5

19

45

19

9.5

19

45

20.7

21.3

21.6

41

42.3

41.2

44.4

72.9

75

76.2

72.3

49.7

48.4

52.2

292

300.5

304.7

578.4

596.8

581.2

626.4

D13

12.7

12.7

12.7

19.05

25.4

25.4

25.4

38.1

38.1

38.1

12.7

25.4

69

69

69

69

25.4

12.7

25.4

69

39.7

51.8

46.9

39.8

39.9

46.2

69.1

67.6

71

68.4

78.4

102.2

92.5

52.3

39.3

45.6

72.6

44.5

46.7

45

313.4

408.9

370.2

314.1

314.9

364.7

545.5

533.6

560.5

540

D16

15.9

15.9

15.9

31.8

47.7

47.7

47.7

15.9

31.8

67

31.8

15.9

31.8

67

36.1

50.7

56

100.4

109.1

111.6

116.3

45.4

63.8

70.5

63.2

45.8

47

48.8

181.8

255.3

282

505.6

549.5

562.1

585.7

D19

19.1

19.1

19.1

19.1

19.1

28.65

28.65

38.2

38.2

38.2

57.3

57.3

57.3

19.1

38.2

65.5

65.5

90

65.5

65.5

38.1

65.5

65.5

19.1

38.2

90

82.7

102

66.1

86.36

99.8

116.4

108.6

140

132.5

131.1

60.4

146.2

150

72.1

89.4

57.7

75.4

87.1

67.7

63.1

60.9

57.8

57.2

17.6

42.5

43.6

288.6

356

212.6

277.8

348.3

374.4

349.2

488.6

426.1

421.7

210.8

510.3

523.5

D22

22.2

22.2

22.2

44.4

66.6

66.6

22.2

44.4

89

44.4

22.2

44.4

87.5

104.6

121.2

173.7

168.5

206.4

56.3

67.1

78.2

56.8

36.3

44.5

226.1

270.2

313.1

448.7

435.3

533.2