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Table 2 — Steel Design Strength (ACI 318 Appendix D Based Design) for US Rebar
Nominal
Tensile
Rebar Size
lb (kN)
4,290
#3
(19.1)
7,800
#4
(34.7)
12,090
#5
(53.8)
17,160
#6
(76.3)
23,400
#7
(104.1)
30,810
#8
(137.0)
39,000
#9
(173.5)
49,530
#10
(220.3)
1 Tensile = ϕ A
as noted in ACI 318 Appendix D
f
se,N
uta
2 Shear = ϕ 0.60 A
as noted in ACI 318 Appendix D
f
se,N
uta
3 See Section 2.4.4 to convert design strength (factored resistance) value to ASD value.
4 ASTM A706 Grade 60 rebar are considered ductile steel elements. ASTM A 615 Grade 40 and 60 rebar are considered brittle steel elements.
Table 3 — Load Adjustment Factors for #3 US Rebar in Uncracked Concrete
Spacing Factor in
#3
Tension
Uncracked Concrete
Embedment h
3-3/8
4-1/2
ef
in (mm)
(86)
(114)
1-3/4
(44)
n/a
1-7/8
(48)
0.59
0.57
2
(51)
0.60
0.57
3
(76)
0.65
0.61
3-5/8
(92)
0.68
0.63
4
(102)
0.70
0.65
4-5/8
(117)
0.73
0.67
5
(127)
0.75
0.69
5-3/4
(146)
0.78
0.71
6
(152)
0.80
0.72
7
(178)
0.85
0.76
8
(203)
0.90
0.80
8-3/4
(222)
0.93
0.82
9
(229)
0.94
0.83
10
(254)
0.99
0.87
11
(279)
1.00
0.91
12
(305)
0.94
14
(356)
1.00
16
(406)
18
(457)
24
(610)
30
(762)
36
(914)
>48
(1219)
1 Linear interpolation not permitted
2 Shaded area with reduced edge distance is permitted provided rebar has no installation torque.
3 Spacing factor reduction in shear, f
, assumes an influence of a nearby edge. If no edge exists, then f
AV
4 Concrete thickness reduction factor in shear, f
Hilti, Inc. (USA) 1-800-879-8000 I www.us.hilti.com I en español 1-800-879-5000 I Hilti (Canada) Corp. 1-800-363-4458 I www.hilti.ca I HIT-HY 100 Technical Supplement 01/14
ASTM A 615 Grade 40
4
Shear
1
2
ϕN
ϕV
sa
sa
lb (kN)
2,375
(10.6)
4,320
(19.2)
6,695
(29.8)
9,505
(42.3)
12,960
(57.6)
17,065
(75.9)
21,600
(96.1)
27,430
(122.0)
Edge Distance Factor
in Tension
f
f
AN
RN
7-1/2
3-3/8
4-1/2
7-1/2
(191)
(86)
(114)
(191)
n/a
n/a
0.32
0.23
0.13
0.54
0.33
0.24
0.14
0.54
0.34
0.25
0.14
0.57
0.43
0.31
0.18
0.58
0.49
0.36
0.21
0.59
0.53
0.38
0.22
0.60
0.60
0.44
0.25
0.61
0.65
0.48
0.28
0.63
0.75
0.55
0.32
0.63
0.78
0.57
0.33
0.66
0.91
0.67
0.39
0.68
1.00
0.76
0.44
0.69
0.83
0.48
0.70
0.86
0.50
0.72
0.95
0.55
0.74
1.00
0.61
0.77
0.66
0.81
0.77
0.86
0.88
0.90
0.99
1.00
1.00
, assumes an influence of a nearby edge. If no edge exists, then f
HV
HIT-HY 100 Adhesive Anchoring System
ASTM A 615 Grade 60
Tensile
1
ϕN
sa
lb (kN)
6,435
(28.6)
11,700
(52.0)
18,135
10,045
(80.7)
25,740
14,255
(114.5)
35,100
19,440
(156.1)
46,215
25,595
(205.6)
(113.9)
58,500
32,400
(260.2)
(144.1)
74,295
41,150
(330.5)
(183.0)
Spacing Factor in
Shear
3
Toward Edge
f
AV
3-3/8
4-1/2
7-1/2
3-3/8
(86)
(114)
(191)
(86)
n/a
n/a
n/a
0.11
0.54
0.53
0.52
0.12
0.54
0.54
0.53
0.13
0.57
0.55
0.54
0.24
0.58
0.56
0.55
0.32
0.59
0.57
0.55
0.38
0.60
0.58
0.56
0.47
0.61
0.59
0.56
0.52
0.62
0.60
0.57
0.65
0.63
0.61
0.58
0.69
0.65
0.63
0.59
0.87
0.67
0.64
0.60
1.00
0.69
0.66
0.61
0.70
0.66
0.61
0.72
0.68
0.63
0.74
0.70
0.64
0.76
0.71
0.65
0.80
0.75
0.68
0.85
0.79
0.70
0.89
0.82
0.73
1.00
0.93
0.81
1.00
0.88
0.96
1.00
= f
.
AV
AN
= 1.0.
HV
HIT-HY 100 Adhesive Anchoring System
3
ASTM A 706 Grade 60
4
Shear
Tensile
2
1
ϕV
ϕN
sa
sa
lb (kN)
lb (kN)
3,565
6,600
(15.9)
(29.4)
6,480
12,000
(28.8)
(53.4)
18,600
(44.7)
(82.7)
26,400
(63.4)
(117.4)
36,000
(86.5)
(160.1)
47,400
(210.8)
60,000
(266.9)
76,200
(339.0)
1,2
Edge Distance in Shear
┴
⃦
To Edge
f
f
RV
RV
4-1/2
7-1/2
3-3/8
4-1/2
7-1/2
(114)
(191)
(86)
(114)
(191)
0.08
0.05
0.22
0.16
0.10
0.09
0.05
0.24
0.18
0.11
0.10
0.06
0.27
0.20
0.12
0.18
0.11
0.46
0.37
0.22
0.24
0.15
0.52
0.42
0.29
0.28
0.17
0.55
0.45
0.34
0.35
0.21
0.62
0.49
0.36
0.39
0.24
0.65
0.51
0.37
0.48
0.29
0.75
0.57
0.40
0.52
0.31
0.78
0.59
0.41
0.65
0.39
0.91
0.67
0.45
0.80
0.48
1.00
0.76
0.48
0.91
0.55
0.83
0.51
0.95
0.57
0.86
0.52
1.00
0.67
0.95
0.57
0.77
1.00
0.61
0.88
0.66
1.00
0.77
0.88
0.99
1.00
4
Shear
2
ϕV
sa
lb (kN)
3,430
(15.3)
6,240
(27.8)
9,670
(43.0)
13,730
(61.1)
18,720
(83.3)
24,650
(109.6)
31,200
(138.8)
39,625
(176.3)
Conc. Thickness
Factor in Shear
4
f
HV
3-3/8
4-1/2
7-1/2
(86)
(114)
(191)
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
0.63
n/a
n/a
0.66
n/a
n/a
0.71
0.64
n/a
0.72
0.66
n/a
0.78
0.71
n/a
0.83
0.76
n/a
0.87
0.79
0.67
0.88
0.80
0.68
0.93
0.85
0.71
0.98
0.89
0.75
1.00
0.93
0.78
1.00
0.84
0.90
0.96
1.00
11
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