Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 135

Anchor Fastening Technical Guide , Edition 22
Table 36 — Load adjustment factors for 3 / 4-in . diameter threaded rods in uncracked concrete 1 , 2 , 3
3 / 4-in . threaded rods uncracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 4
ƒ AV
┴ Toward edge
ƒ RV
Edge distance in shear
⃦ To and away from edge
ƒ RV
Concrete thickness factor in shear 5
ƒ HV
in . 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15
Embedment
h ef
( mm )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.35
0.24
0.18
0.10
n / a
n / a
n / a
n / a
0.09
0.03
0.02
0.01
0.17
0.07
0.05
0.02
n / a
n / a
n / a
n / a
3-3 / 4
( 95 )
0.58
0.58
0.57
0.54
0.52
0.30
0.23
0.13
0.57
0.54
0.53
0.52
0.27
0.11
0.07
0.03
0.52
0.22
0.14
0.07
n / a
n / a
n / a
n / a
4
( 102 ) 0.59
0.59
0.57
0.54
0.54
0.31
0.23
0.13
0.57
0.54
0.53
0.52
0.29
0.12
0.08
0.04
0.54
0.24
0.16
0.07
n / a
n / a
n / a
n / a
5
( 127 ) 0.61
0.61
0.59
0.56
0.59
0.34
0.25
0.14
0.59
0.55
0.54
0.52
0.41
0.17
0.11
0.05
0.64
0.33
0.22
0.10
n / a
n / a
n / a
n / a
5-1 / 4
( 133 ) 0.61
0.61
0.60
0.56
0.61
0.35
0.26
0.15
0.60
0.55
0.54
0.52
0.44
0.18
0.12
0.05
0.66
0.35
0.23
0.11
0.62
n / a
n / a
n / a
6
( 152 ) 0.63
0.63
0.61
0.57
0.65
0.38
0.28
0.16
0.61
0.56
0.55
0.53
0.54
0.22
0.14
0.07
0.76
0.38
0.29
0.13
0.66
n / a
n / a
n / a
7
( 178 ) 0.65
0.65
0.63
0.58
0.70
0.41
0.30
0.17
0.63
0.57
0.55
0.53
0.68
0.28
0.18
0.08
0.89
0.41
0.32
0.17
0.72
n / a
n / a
n / a
8
( 203 ) 0.67
0.67
0.65
0.59
0.76
0.45
0.33
0.18
0.65
0.58
0.56
0.54
0.83
0.34
0.22
0.10
1.00
0.45
0.35
0.20
0.77
n / a
n / a
n / a
8-1 / 2
( 216 ) 0.68
0.68
0.66
0.59
0.79
0.47
0.34
0.19
0.66
0.59
0.56
0.54
0.91
0.37
0.24
0.11
0.47
0.36
0.22
0.79
0.59
n / a
n / a
9
( 229 ) 0.69
0.69
0.67
0.60
0.83
0.49
0.35
0.20
0.67
0.59
0.57
0.54
0.99
0.40
0.26
0.12
0.49
0.37
0.24
0.81
0.60
n / a
n / a
10
( 254 ) 0.71
0.71
0.69
0.61
0.89
0.53
0.38
0.21
0.68
0.60
0.58
0.55
1.00
0.47
0.31
0.14
0.53
0.40
0.28
0.86
0.64
n / a
n / a
10-3 / 4 ( 273 ) 0.73
0.73
0.70
0.62
0.94
0.57
0.40
0.23
0.70
0.61
0.58
0.55
0.53
0.34
0.16
0.57
0.42
0.29
0.89
0.66
0.57
n / a
12
( 305 ) 0.76
0.76
0.72
0.63
1.00
0.64
0.44
0.25
0.72
0.62
0.59
0.55
0.62
0.40
0.19
0.64
0.45
0.31
0.94
0.70
0.60
n / a
14
( 356 ) 0.80
0.80
0.76
0.66
0.74
0.52
0.29
0.76
0.64
0.61
0.56
0.78
0.51
0.24
0.74
0.52
0.33
1.00
0.75
0.65
n / a
16
( 406 ) 0.84
0.84
0.80
0.68
0.85
0.59
0.33
0.79
0.66
0.62
0.57
0.96
0.62
0.29
0.85
0.59
0.36
0.80
0.70
n / a
16-3 / 4 ( 425 ) 0.86
0.86
0.81
0.69
0.89
0.62
0.35
0.81
0.67
0.63
0.58
1.00
0.67
0.31
0.89
0.62
0.37
0.82
0.71
0.55
18
( 457 ) 0.89
0.89
0.83
0.70
0.96
0.66
0.37
0.83
0.68
0.64
0.58
0.74
0.35
0.96
0.66
0.39
0.85
0.74
0.57
20
( 508 ) 0.93
0.93
0.87
0.72
1.00
0.74
0.41
0.87
0.70
0.65
0.59
0.87
0.40
1.00
0.74
0.42
0.90
0.78
0.60
22
( 559 ) 0.97
0.97
0.91
0.74
0.81
0.45
0.91
0.72
0.67
0.60
1.00
0.47
0.81
0.46
0.94
0.82
0.63
24
( 610 ) 1.00
1.00
0.94
0.77
0.89
0.50
0.94
0.74
0.68
0.61
0.53
0.89
0.50
0.99
0.85
0.66
26
( 660 )
0.98
0.79
0.96
0.54
0.98
0.76
0.70
0.62
0.60
0.96
0.54
1.00
0.89
0.69
28
( 711 )
1.00
0.81
1.00
0.58
1.00
0.78
0.71
0.63
0.67
1.00
0.58
0.92
0.71
30
( 762 )
0.83
0.62
0.80
0.73
0.64
0.74
0.62
0.95
0.74
36
( 914 )
0.90
0.74
0.86
0.77
0.66
0.98
0.74
1.00
0.81
> 48
( 1219 )
1.00
0.99
0.99
0.86
0.72
1.00
0.99
0.94
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in . ( mm )
3.2.3
Table 37 — Load adjustment factors for 3 / 4-in . diameter threaded rods in cracked concrete 1 , 2 , 3
3 / 4-in . threaded rods cracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 4
ƒ AV
┴ Toward edge
ƒ RV
Edge distance in shear
⃦ To and away from edge
ƒ RV
Concrete thickness factor in shear 5
ƒ HV
in . 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15 3-1 / 2 6-3 / 4 9 15
Embedment
h ef
( mm )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
( 89 )
( 171 ) ( 229 ) ( 381 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.43
0.43
0.42
0.39
n / a
n / a
n / a
n / a
0.09
0.03
0.02
0.01
0.17
0.07
0.05
0.02
n / a
n / a
n / a
n / a
3-3 / 4
( 95 )
0.58
0.58
0.57
0.54
0.53
0.53
0.50
0.44
0.57
0.54
0.53
0.52
0.27
0.11
0.07
0.04
0.54
0.22
0.14
0.07
n / a
n / a
n / a
n / a
4
( 102 ) 0.59
0.59
0.57
0.54
0.54
0.54
0.51
0.44
0.57
0.54
0.53
0.52
0.30
0.12
0.08
0.04
0.59
0.24
0.16
0.08
n / a
n / a
n / a
n / a
5
( 127 ) 0.61
0.61
0.59
0.56
0.59
0.59
0.56
0.47
0.59
0.55
0.54
0.52
0.41
0.17
0.11
0.06
0.83
0.34
0.22
0.11
n / a
n / a
n / a
n / a
5-1 / 4
( 133 ) 0.61
0.61
0.60
0.56
0.61
0.61
0.57
0.47
0.60
0.55
0.54
0.53
0.45
0.18
0.12
0.06
0.89
0.36
0.24
0.12
0.62
n / a
n / a
n / a
6
( 152 ) 0.63
0.63
0.61
0.57
0.65
0.65
0.60
0.49
0.61
0.56
0.55
0.53
0.54
0.22
0.14
0.07
1.00
0.44
0.29
0.15
0.67
n / a
n / a
n / a
7
( 178 ) 0.65
0.65
0.63
0.58
0.70
0.70
0.65
0.52
0.63
0.57
0.55
0.53
0.69
0.28
0.18
0.09
0.56
0.36
0.19
0.72
n / a
n / a
n / a
8
( 203 ) 0.67
0.67
0.65
0.59
0.76
0.76
0.70
0.55
0.65
0.58
0.56
0.54
0.84
0.34
0.22
0.12
0.68
0.44
0.23
0.77
n / a
n / a
n / a
8-1 / 2
( 216 ) 0.68
0.68
0.66
0.59
0.79
0.79
0.72
0.56
0.66
0.59
0.56
0.54
0.92
0.37
0.24
0.13
0.75
0.49
0.25
0.79
0.59
n / a
n / a
9
( 229 ) 0.69
0.69
0.67
0.60
0.83
0.83
0.75
0.57
0.67
0.59
0.57
0.54
1.00
0.41
0.26
0.14
0.82
0.53
0.28
0.82
0.61
n / a
n / a
10
( 254 ) 0.71
0.71
0.69
0.61
0.89
0.89
0.80
0.60
0.69
0.60
0.58
0.55
0.48
0.31
0.16
0.95
0.62
0.32
0.86
0.64
n / a
n / a
10-3 / 4 ( 273 ) 0.73
0.73
0.70
0.62
0.94
0.94
0.84
0.62
0.70
0.61
0.58
0.55
0.53
0.35
0.18
1.00
0.69
0.36
0.89
0.66
0.57
n / a
12
( 305 ) 0.76
0.76 0.72
0.63
1.00
1.00
0.91
0.66
0.72
0.62
0.59
0.56
0.63
0.41
0.21
0.82
0.42
0.94
0.70
0.61
n / a
14
( 356 ) 0.80
0.80
0.76
0.66
1.00
0.72
0.76
0.64
0.61
0.57
0.79
0.51
0.27
1.00
0.53
1.00
0.76
0.65
n / a
16
( 406 ) 0.84
0.84
0.80
0.68
0.78
0.80
0.66
0.62
0.58
0.97
0.63
0.33
0.65
0.81
0.70
n / a
16-3 / 4 ( 425 ) 0.86
0.86
0.81
0.69
0.81
0.81
0.67
0.63
0.58
1.00
0.67
0.35
0.70
0.83
0.72
0.57
18
( 457 ) 0.89
0.89
0.83
0.70
0.85
0.83
0.68
0.64
0.59
0.75
0.39
0.78
0.86
0.74
0.60
20
( 508 ) 0.93
0.93
0.87
0.72
0.91
0.87
0.70
0.65
0.60
0.88
0.46
0.91
0.90
0.78
0.63
22
( 559 ) 0.97
0.97
0.91
0.74
0.98
0.91
0.72
0.67
0.61
1.00
0.53
0.98
0.95
0.82
0.66
24
( 610 ) 1.00
1.00
0.94
0.77
1.00
0.94
0.74
0.68
0.62
0.60
1.00
0.99
0.86
0.69
26
( 660 )
0.98
0.79
0.98
0.76
0.70
0.63
0.68
1.00
0.89
0.72
28
( 711 )
1.00
0.81
1.00
0.79
0.71
0.64
0.75
0.92
0.74
30
( 762 )
0.83
0.81
0.73
0.65
0.84
0.96
0.77
36
( 914 )
0.90
0.87
0.77
0.68
1.00
1.00
0.84
> 48
( 1219 )
1.00
0.99
0.87
0.74
0.97
Spacing ( s ) / edge distance ( c a
) / concrete thickness ( h ), - in . ( mm )
1 Linear interpolation not permitted . 2 Shaded area with reduced edge distance is permitted provided the installation torque is reduced to 0.30 T max for 5d ≤ s ≤ 16-in . and to 0.5 T max for s > 16-in .
3 When combining multiple load adjustment factors ( e . g . for a 4 anchor pattern in a corner with a thin concrete member ) the design can become very conservative . To optimize the design , use PROFIS Engineering or perform anchor calculation using the design equations from ACI 318 Chapter 17 .
4 Spacing factor reduction in shear applicable when c < 3 * h ef . ƒ AV
, is applicable when edge distance , c < 3 * h ef . If c ≥ 3 * h ef
, then ƒ AV = ƒ AN
.
5 Concrete thickness reduction factor in shear , ƒ HV , is applicable when edge distance , c < 3 * h ef
. If c ≥ 3 * h ef , then ƒ HV
= 1.0 .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.3 HIT-RE 500 V3 EPOXY ADHESIVE ANCHORING SYSTEM Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458
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