Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 134

Table 34 — Load adjustment factors for 5 / 8-in . diameter threaded rods in uncracked concrete 1 , 2 , 3
5 / 8-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 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2
Embedment
h ef
( mm )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.35
0.24
0.19
0.11
n / a
n / a
n / a
n / a
0.09
0.04
0.03
0.01
0.19
0.08
0.06
0.03
n / a
n / a
n / a
n / a
3-1 / 8
( 79 )
0.58
0.58
0.57
0.54
0.47
0.29
0.22
0.13
0.56
0.54
0.53
0.52
0.22
0.10
0.07
0.03
0.45
0.20
0.13
0.06
n / a
n / a
n / a
n / a
4
( 102 ) 0.60
0.60
0.59
0.55
0.56
0.32
0.24
0.14
0.58
0.55
0.53
0.52
0.32
0.15
0.10
0.04
0.56
0.29
0.19
0.09
n / a
n / a
n / a
n / a
4-5 / 8
( 117 ) 0.62
0.62
0.60
0.56
0.62
0.35
0.26
0.15
0.59
0.55
0.54
0.52
0.40
0.18
0.12
0.06
0.62
0.35
0.24
0.11
0.60
n / a
n / a
n / a
5
( 127 ) 0.63
0.63
0.61
0.57
0.64
0.36
0.27
0.16
0.60
0.56
0.54
0.53
0.45
0.21
0.13
0.06
0.67
0.36
0.27
0.12
0.63
n / a
n / a
n / a
6
( 152 ) 0.65
0.65
0.63
0.58
0.71
0.41
0.30
0.17
0.62
0.57
0.55
0.53
0.59
0.27
0.18
0.08
0.80
0.41
0.32
0.16
0.69
n / a
n / a
n / a
7
( 178 ) 0.68
0.68
0.66
0.59
0.78
0.45
0.33
0.19
0.64
0.58
0.56
0.54
0.75
0.34
0.22
0.10
0.94
0.45
0.35
0.21
0.74
n / a
n / a
n / a
7-1 / 8
( 181 ) 0.68
0.68
0.66
0.60
0.79
0.46
0.33
0.19
0.64
0.58
0.56
0.54
0.77
0.35
0.23
0.11
0.95
0.46
0.35
0.21
0.75
0.57
n / a
n / a
8
( 203 ) 0.70
0.70
0.68
0.61
0.85
0.50
0.36
0.21
0.66
0.59
0.57
0.54
0.91
0.41
0.27
0.13
1.00
0.50
0.38
0.25
0.79
0.61
n / a
n / a
9
( 229 ) 0.73
0.73
0.70
0.62
0.93
0.56
0.39
0.22
0.68
0.60
0.58
0.55
1.00
0.50
0.32
0.15
0.56
0.41
0.29
0.84
0.65
0.56
n / a
10
( 254 ) 0.75
0.75
0.72
0.63
1.00
0.62
0.43
0.24
0.70
0.62
0.59
0.55
0.58
0.38
0.18
0.62
0.44
0.30
0.89
0.68
0.59
n / a
11
( 279 ) 0.78
0.78
0.74
0.65
0.68
0.47
0.27
0.72
0.63
0.60
0.56
0.67
0.43
0.20
0.68
0.47
0.32
0.93
0.71
0.62
n / a
12
( 305 ) 0.80
0.80
0.77
0.66
0.74
0.51
0.29
0.74
0.64
0.60
0.56
0.76
0.50
0.23
0.74
0.51
0.34
0.97
0.75
0.65
n / a
14
( 356 ) 0.85
0.85
0.81
0.69
0.86
0.60
0.34
0.77
0.66
0.62
0.57
0.96
0.62
0.29
0.86
0.60
0.37
1.00
0.81
0.70
0.54
16
( 406 ) 0.90
0.90
0.86
0.71
0.99
0.68
0.39
0.81
0.69
0.64
0.58
1.00
0.76
0.35
0.99
0.68
0.41
0.86
0.75
0.58
18
( 457 ) 0.96
0.96
0.90
0.74
1.00
0.77
0.44
0.85
0.71
0.66
0.59
0.91
0.42
1.00
0.77
0.44
0.91
0.79
0.61
20
( 508 ) 1.00
1.00
0.94
0.77
0.86
0.49
0.89
0.73
0.67
0.60
1.00
0.50
0.86
0.49
0.96
0.83
0.65
22
( 559 )
0.99
0.79
0.94
0.54
0.93
0.75
0.69
0.61
0.57
0.94
0.54
1.00
0.87
0.68
24
( 610 )
1.00
0.82
1.00
0.59
0.97
0.78
0.71
0.63
0.65
1.00
0.59
0.91
0.71
26
( 660 )
0.85
0.64
1.00
0.80
0.73
0.64
0.73
0.64
0.95
0.74
28
( 711 )
0.87
0.68
0.82
0.74
0.65
0.82
0.68
0.99
0.76
30
( 762 )
0.90
0.73
0.85
0.76
0.66
0.91
0.73
1.00
0.79
36
( 914 )
0.98
0.88
0.92
0.81
0.69
1.00
0.88
0.87
> 48 ( 1219 )
1.00
1.00
1.00
0.92
0.75
1.00
1.00
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in . ( mm )
Table 35 — Load adjustment factors for 5 / 8-in . diameter threaded rods in cracked concrete 1 , 2 , 3
5 / 8-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 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2 3-1 / 8 5-5 / 8 7-1 / 2 12-1 / 2
Embedment
h ef
( mm )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
( 79 )
( 143 ) ( 191 ) ( 318 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.44
0.44
0.43
0.40
n / a
n / a
n / a
n / a
0.09
0.04
0.03
0.02
0.19
0.09
0.06
0.03
n / a
n / a
n / a
n / a
3-1 / 8
( 79 )
0.58
0.58
0.57
0.54
0.52
0.52
0.50
0.44
0.56
0.54
0.53
0.52
0.22
0.10
0.07
0.04
0.45
0.20
0.13
0.07
n / a
n / a
n / a
n / a
4
( 102 ) 0.60
0.60
0.59
0.55
0.58
0.58
0.55
0.46
0.58
0.55
0.53
0.52
0.33
0.15
0.10
0.05
0.65
0.30
0.19
0.11
n / a
n / a
n / a
n / a
4-5 / 8
( 117 ) 0.62
0.62
0.60
0.56
0.62
0.62
0.58
0.48
0.59
0.55
0.54
0.53
0.40
0.18
0.12
0.07
0.81
0.37
0.24
0.13
0.60
n / a
n / a
n / a
5
( 127 ) 0.63
0.63
0.61
0.57
0.64
0.64
0.60
0.49
0.60
0.56
0.54
0.53
0.45
0.21
0.13
0.08
0.91
0.41
0.27
0.15
0.63
n / a
n / a
n / a
6
( 152 ) 0.65
0.65
0.63
0.58
0.71
0.71
0.66
0.53
0.62
0.57
0.55
0.54
0.60
0.27
0.18
0.10
1.00
0.54
0.35
0.20
0.69
n / a
n / a
n / a
7
( 178 ) 0.68
0.68
0.66
0.59
0.78
0.78
0.72
0.56
0.64
0.58
0.56
0.54
0.75
0.34
0.22
0.13
0.68
0.44
0.25
0.74
n / a
n / a
n / a
7-1 / 8
( 181 ) 0.68
0.68
0.66
0.60
0.79
0.79
0.73
0.56
0.64
0.58
0.56
0.54
0.77
0.35
0.23
0.13
0.70
0.46
0.26
0.75
0.58
n / a
n / a
8
( 203 ) 0.70
0.70
0.68
0.61
0.85
0.85
0.78
0.59
0.66
0.59
0.57
0.55
0.92
0.42
0.27
0.15
0.84
0.54
0.31
0.79
0.61
n / a
n / a
9
( 229 ) 0.73
0.73
0.70
0.62
0.93
0.93
0.85
0.62
0.68
0.60
0.58
0.55
1.00
0.50
0.32
0.18
1.00
0.65
0.37
0.84
0.65
0.56
n / a
10
( 254 ) 0.75
0.75
0.72
0.63
1.00
1.00
0.91
0.66
0.70
0.62
0.59
0.56
0.58
0.38
0.21
0.76
0.43
0.89
0.68
0.59
n / a
11
( 279 ) 0.78
0.78
0.74
0.65
0.98
0.69
0.72
0.63
0.60
0.57
0.67
0.44
0.25
0.88
0.49
0.93
0.72
0.62
n / a
12
( 305 ) 0.80
0.80
0.77
0.66
1.00
0.73
0.74
0.64
0.60
0.57
0.77
0.50
0.28
1.00
0.56
0.97
0.75
0.65
n / a
14
( 356 ) 0.85
0.85
0.81
0.69
0.81
0.78
0.66
0.62
0.58
0.97
0.63
0.36
0.71
1.00
0.81
0.70
0.58
16
( 406 ) 0.90
0.90
0.86
0.71
0.89
0.82
0.69
0.64
0.60
1.00
0.77
0.43
0.87
0.86
0.75
0.62
18
( 457 ) 0.96
0.96
0.90
0.74
0.97
0.85
0.71
0.66
0.61
0.92
0.52
0.97
0.92
0.79
0.66
20
( 508 ) 1.00
1.00
0.94
0.77
1.00
0.89
0.73
0.67
0.62
1.00
0.61
1.00
0.97
0.84
0.69
22
( 559 )
0.99
0.79
0.93
0.76
0.69
0.63
0.70
1.00
0.88
0.72
24
( 610 )
1.00
0.82
0.97
0.78
0.71
0.64
0.80
0.92
0.76
26
( 660 )
0.85
1.00
0.80
0.73
0.66
0.90
0.95
0.79
28
( 711 )
0.87
0.83
0.74
0.67
1.00
0.99
0.82
30
( 762 )
0.90
0.85
0.76
0.68
1.00
0.85
36
( 914 )
0.98
0.92
0.81
0.71
0.93
> 48 ( 1219 )
1.00
1.00
0.92
0.79
1.00
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 four-anchor pattern in a corner with thin concrete member ) the design can become very conservative . To optimize the design , use PROFIS Engineering or perform anchor calculation using 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 .
130
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