Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 210

Table 17 — Load adjustment factors for 1-in . diameter threaded rods in uncracked concrete 1 , 2 , 3
1-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 edge
ƒ RV
Concrete thickness factor in shear 5
Embedment
in .
4
9
12
20
4
9
12
20
4
9
12
20
4
9
12
20
4
9
12
20
4
9
12
20
h ef
( mm )
( 102 )
( 229 )
( 305 )
( 508 )
( 102 )
( 229 )
( 305 )
( 508 )
( 102 )
( 229 )
( 305 )
( 508 )
( 102 )
( 229 )
( 305 )
( 508 )
( 102 )
( 229 )
( 305 )
( 508 )
( 102 )
( 229 )
( 305 )
( 508 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.38
0.23
0.17
0.10
n / a
n / a
n / a
n / a
0.08
0.03
0.02
0.01
0.15
0.05
0.04
0.02
n / a
n / a
n / a
n / a
5
( 127 )
0.62
0.59
0.57
0.542
0.63
0.32
0.24
0.14
0.59
0.54
0.53
0.52
0.37
0.12
0.09
0.05
0.63
0.24
0.18
0.12
n / a
n / a
n / a
n / a
6
( 152 )
0.65
0.61
0.58
0.550
0.70
0.36
0.26
0.15
0.60
0.55
0.54
0.53
0.48
0.16
0.12
0.07
0.70
0.31
0.23
0.14
n / a
n / a
n / a
n / a
6-1 / 4
( 159 )
0.65
0.62
0.59
0.552
0.71
0.37
0.27
0.16
0.61
0.55
0.54
0.53
0.51
0.17
0.12
0.08
0.71
0.33
0.25
0.15
0.65
n / a
n / a
n / a
7
( 178 )
0.67
0.63
0.60
0.558
0.76
0.39
0.29
0.17
0.62
0.56
0.55
0.53
0.61
0.20
0.15
0.09
0.76
0.39
0.29
0.17
0.69
n / a
n / a
n / a
8
( 203 )
0.70
0.65
0.61
0.567
0.83
0.43
0.31
0.18
0.64
0.56
0.55
0.54
0.74
0.24
0.18
0.11
0.84
0.43
0.31
0.19
0.74
n / a
n / a
n / a
9
( 229 )
0.72
0.67
0.63
0.575
0.91
0.47
0.34
0.20
0.65
0.57
0.56
0.54
0.89
0.29
0.22
0.13
0.91
0.47
0.34
0.20
0.78
n / a
n / a
n / a
10
( 254 )
0.75
0.69
0.64
0.583
0.98
0.50
0.37
0.22
0.67
0.58
0.57
0.55
1.00
0.34
0.25
0.15
0.98
0.50
0.37
0.22
0.83
n / a
n / a
n / a
11
( 279 )
0.77
0.70
0.65
0.592
1.00
0.55
0.41
0.24
0.69
0.59
0.57
0.55
0.39
0.29
0.17
1.00
0.55
0.41
0.24
0.87
n / a
n / a
n / a
11-1 / 4 ( 286 )
0.78
0.71
0.66
0.594
0.57
0.42
0.24
0.70
0.59
0.58
0.55
0.40
0.30
0.18
0.57
0.42
0.24
0.88
0.60
n / a
n / a
12
( 305 )
0.80
0.72
0.67
0.600
0.60
0.44
0.26
0.71
0.60
0.58
0.56
0.44
0.33
0.20
0.60
0.44
0.26
0.91
0.62
n / a
n / a
13
( 330 )
0.82
0.74
0.68
0.608
0.65
0.48
0.28
0.72
0.61
0.59
0.56
0.50
0.37
0.22
0.65
0.48
0.28
0.94
0.65
n / a
n / a
14
( 356 )
0.84
0.76
0.69
0.617
0.70
0.52
0.30
0.74
0.61
0.59
0.57
0.56
0.42
0.25
0.70
0.52
0.30
0.98
0.67
n / a
n / a
14-1 / 4 ( 362 )
0.85
0.76
0.70
0.619
0.72
0.53
0.31
0.74
0.62
0.60
0.57
0.57
0.43
0.26
0.72
0.53
0.31
0.99
0.68
0.62
n / a
16
( 406 )
0.90
0.80
0.72
0.633
0.80
0.59
0.35
0.77
0.63
0.61
0.58
0.68
0.51
0.31
0.80
0.59
0.35
1.00
0.72
0.65
n / a
18
( 457 )
0.94
0.83
0.75
0.650
0.90
0.66
0.39
0.81
0.65
0.62
0.59
0.81
0.61
0.35
0.90
0.664
0.40
0.76
0.70
n / a
20
( 508 )
0.99
0.87
0.78
0.667
1.00
0.74
0.43
0.84
0.66
0.63
0.60
0.95
0.71
0.43
1.00
0.74
0.43
0.80
0.73
n / a
22
( 559 )
1.00
0.91
0.81
0.683
0.81
0.48
0.88
0.68
0.65
0.60
1.00
0.82
0.49
0.81
0.48
0.84
0.77
n / a
22-1 / 4 ( 565 )
0.91
0.81
0.685
0.82
0.48
0.88
0.68
0.65
0.61
0.84
0.50
0.82
0.48
0.85
0.77
0.65
24
( 610 )
0.94
0.83
0.700
0.89
0.52
0.91
0.69
0.66
0.61
0.94
0.56
0.89
0.52
0.88
0.80
0.67
26
( 660 )
0.98
0.86
0.717
0.96
0.56
0.94
0.71
0.67
0.62
1.00
0.63
0.96
0.56
0.92
0.83
0.70
28
( 711 )
1.00
0.89
0.733
1.00
0.61
0.98
0.73
0.69
0.63
0.71
1.00
0.61
0.95
0.86
0.73
30
( 762 )
0.92
0.750
0.65
1.00
0.74
0.70
0.64
0.79
0.65
0.98
0.89
0.75
36
( 914 )
1.00
0.800
0.78
0.79
0.74
0.67
1.00
0.78
1.00
0.98
0.83
> 48
( 1219 )
0.900
1.00
0.87
0.82
0.73
1.00
1.00
0.95
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 .
Spacing ( s ) / Edge distance ( c a ) / Concrete thickness ( h ), - in . ( mm ) ƒ HV
Table 18 — Load adjustment factors for 1-1 / 4-in . diameter threaded rods in uncracked concrete 1 , 2 , 3
1-1 / 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
Embedment
in .
5
11-1 / 4
15
25
5
11-1 / 4
15
25
5
11-1 / 4
15
25
5
11-1 / 4
15
25
5
11-1 / 4
15
25
5
11-1 / 4 11-1 / 4
25
h ef
( mm )
( 127 )
( 286 )
( 381 )
( 635 )
( 127 )
( 286 )
( 381 )
( 635 )
( 127 )
( 286 )
( 381 )
( 635 )
( 127 )
( 286 )
( 381 )
( 635 )
( 127 )
( 286 )
( 381 )
( 635 )
( 127 )
( 286 )
( 286 )
( 635 )
1-3 / 4
( 44 )
n / a
n / a
n / a
n / a
0.37
0.22
0.16
0.09
n / a
n / a
n / a
n / a
0.05
0.02
0.01
0.01
0.11
0.03
0.02
0.02
n / a
n / a
n / a
n / a
6-1 / 4
( 159 )
0.62
0.59
0.57
0.542
0.64
0.32
0.24
0.14
0.59
0.54
0.53
0.52
0.37
0.11
0.08
0.05
0.64
0.22
0.16
0.10
n / a
n / a
n / a
n / a
7
( 178 )
0.64
0.60
0.58
0.547
0.68
0.34
0.25
0.15
0.60
0.54
0.54
0.53
0.44
0.13
0.10
0.06
0.68
0.26
0.19
0.12
n / a
n / a
n / a
n / a
8
( 203 )
0.66
0.62
0.59
0.553
0.73
0.37
0.27
0.16
0.61
0.55
0.54
0.53
0.53
0.16
0.12
0.07
0.73
0.32
0.24
0.15
0.66
n / a
n / a
n / a
9
( 229 )
0.68
0.63
0.60
0.560
0.79
0.40
0.29
0.17
0.62
0.56
0.55
0.53
0.63
0.19
0.14
0.09
0.79
0.38
0.28
0.17
0.70
n / a
n / a
n / a
10
( 254 )
0.70
0.65
0.61
0.567
0.84
0.43
0.32
0.19
0.64
0.561
0.55
0.54
0.74
0.22
0.17
0.10
0.84
0.43
0.32
0.19
0.74
n / a
n / a
n / a
11
( 279 )
0.72
0.66
0.62
0.573
0.90
0.46
0.34
0.20
0.65
0.57
0.56
0.54
0.86
0.26
0.19
0.12
0.90
0.46
0.34
0.20
0.78
n / a
n / a
n / a
12
( 305 )
0.74
0.68
0.63
0.580
0.96
0.49
0.36
0.21
0.66
0.57
0.56
0.54
0.98
0.29
0.22
0.13
0.96
0.49
0.36
0.21
0.81
n / a
n / a
n / a
13
( 330 )
0.76
0.69
0.64
0.587
1.00
0.53
0.39
0.23
0.68
0.58
0.57
0.55
1.00
0.33
0.25
0.15
1.00
0.53
0.39
0.23
0.84
n / a
n / a
n / a
14
( 356 )
0.78
0.71
0.66
0.593
0.57
0.42
0.25
0.70
0.59
0.57
0.55
0.37
0.28
0.17
0.57
0.42
0.25
0.88
0.58
n / a
n / a
14-1 / 4 ( 362 )
0.78
0.71
0.66
0.595
0.58
0.43
0.25
0.70
0.59
0.57
0.55
0.38
0.28
0.17
0.58
0.43
0.25
0.88
0.58
n / a
n / a
15
( 381 )
0.80
0.72
0.67
0.600
0.61
0.45
0.26
0.71
0.59
0.58
0.55
0.41
0.31
0.18
0.61
0.45
0.26
0.91
0.61
n / a
n / a
16
( 406 )
0.82
0.74
0.68
0.607
0.65
0.48
0.28
0.72
0.60
0.58
0.56
0.45
0.34
0.20
0.65
0.48
0.28
0.94
0.62
n / a
n / a
17
( 432 )
0.84
0.75
0.69
0.613
0.69
0.51
0.30
0.73
0.60
0.59
0.56
0.49
0.37
0.22
0.69
0.51
0.30
0.96
0.64
n / a
n / a
18
( 457 )
0.86
0.77
0.70
0.620
0.73
0.54
0.32
0.75
0.61
0.59
0.56
0.53
0.40
0.24
0.73
0.54
0.32
0.99
0.66
0.60
n / a
20
( 508 )
0.90
0.80
0.72
0.633
0.81
0.60
0.35
0.77
0.62
0.60
0.57
0.63
0.47
0.28
0.81
0.60
0.35
1.00
0.70
0.63
n / a
22
( 559 )
0.94
0.83
0.74
0.647
0.89
0.66
0.39
0.80
0.63
0.61
0.58
0.72
0.54
0.33
0.89
0.66
0.39
0.73
0.67
n / a
24
( 610 )
0.98
0.86
0.77
0.660
0.97
0.72
0.42
0.83
0.65
0.62
0.58
0.82
0.62
0.37
0.97
0.72
0.42
0.77
0.70
n / a
26
( 660 )
1.00
0.89
0.79
0.673
1.00
0.78
0.46
0.86
0.66
0.63
0.59
0.93
0.70
0.42
1.00
0.78
0.46
0.80
0.72
n / a
28
( 711 )
0.92
0.81
0.687
0.84
0.49
0.88
0.67
0.64
0.60
1.00
0.78
0.47
0.84
0.49
0.81
0.75
0.63
30
( 762 )
0.94
0.83
0.700
0.90
0.53
0.91
0.68
0.65
0.61
0.86
0.52
0.90
0.53
0.86
0.78
0.66
36
( 914 )
1.00
0.90
0.740
1.00
0.63
0.99
0.72
0.68
0.63
1.00
0.68
1.00
0.63
0.94
0.85
0.72
> 48
( 1219 )
1.00
0.820
0.84
1.00
0.79
0.74
0.67
1.00
0.84
1.00
0.98
0.83
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 .
Spacing ( s ) / Edge distance ( c a ) / Concrete thickness ( h ), - in . ( mm )
206 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.5 HIT-ICE 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
ƒ HV