Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 243

Anchor Fastening Technical Guide , Edition 22
Table 9 — Load adjustment factors for 7 / 8 , 1 , and 1-1 / 4-in . diameter threaded rods in uncracked concrete 1 , 2
7 / 8 , 1 & 1-1 / 4-in . threaded rods uncracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in
4 shear ƒ AV
Edge distance in shear
┴ Toward edge
ƒ RV
‖ To edge
ƒ RV
Concrete thickness
5 factor in shear
Thread size , in . 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 Embedment h ef in . 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 ( mm ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
4-3 / 8
( 111 )
0.58
n / a
n / a
0.35
n / a
n / a
0.55
n / a
n / a
0.14
n / a
n / a
0.28
n / a
n / a
n / a
n / a
n / a
5
( 127 )
0.60
0.58
n / a
0.37
0.34
n / a
0.55
0.54
n / a
0.17
0.12
n / a
0.34
0.25
n / a
n / a
n / a
n / a
6
( 152 )
0.61
0.60
n / a
0.41
0.37
n / a
0.56
0.55
n / a
0.23
0.16
n / a
0.41
0.33
n / a
n / a
n / a
n / a
6-1 / 4
( 159 )
0.62
0.60
0.58
0.42
0.37
0.34
0.56
0.55
0.54
0.24
0.17
0.11
0.42
0.35
0.22
n / a
n / a
n / a
7
( 178 )
0.63
0.62
0.59
0.45
0.40
0.35
0.57
0.56
0.54
0.29
0.21
0.13
0.45
0.40
0.27
n / a
n / a
n / a
8
( 203 )
0.65
0.63
0.61
0.50
0.43
0.37
0.58
0.57
0.55
0.35
0.25
0.16
0.50
0.43
0.33
n / a
n / a
n / a
8-5 / 8
( 219 )
0.67
0.64
0.61
0.52
0.45
0.39
0.59
0.57
0.55
0.39
0.28
0.18
0.52
0.45
0.36
0.60
n / a
n / a
9
( 229 )
0.67
0.65
0.62
0.54
0.46
0.40
0.59
0.57
0.56
0.42
0.30
0.19
0.54
0.46
0.39
0.61
n / a
n / a
10
( 254 )
0.69
0.67
0.63
0.59
0.50
0.42
0.60
0.58
0.56
0.49
0.35
0.23
0.59
0.50
0.42
0.64
n / a
n / a
10-1 / 2
( 267 )
0.70
0.68
0.64
0.62
0.51
0.44
0.61
0.59
0.57
0.52
0.38
0.24
0.62
0.51
0.44
0.66
0.59
n / a
11
( 279 )
0.71
0.68
0.65
0.64
0.53
0.45
0.61
0.59
0.57
0.56
0.40
0.26
0.64
0.53
0.45
0.67
0.60
n / a
12
( 305 )
0.73
0.70
0.66
0.70
0.57
0.47
0.62
0.60
0.57
0.64
0.46
0.30
0.70
0.57
0.47
0.70
0.63
n / a
13
( 330 )
0.75
0.72
0.67
0.76
0.61
0.50
0.63
0.61
0.58
0.72
0.52
0.34
0.76
0.61
0.50
0.73
0.66
n / a
13-3 / 4
( 349 )
0.76
0.73
0.68
0.81
0.65
0.52
0.64
0.61
0.59
0.78
0.56
0.37
0.81
0.65
0.52
0.75
0.67
0.58
14
( 356 )
0.77
0.73
0.68
0.82
0.66
0.53
0.64
0.62
0.59
0.81
0.58
0.38
0.82
0.66
0.53
0.76
0.68
0.59
15
( 381 )
0.79
0.75
0.70
0.88
0.71
0.55
0.65
0.62
0.59
0.89
0.64
0.42
0.88
0.71
0.55
0.79
0.70
0.61
16
( 406 )
0.81
0.77
0.71
0.94
0.75
0.58
0.67
0.63
0.60
0.99
0.71
0.46
0.94
0.75
0.58
0.81
0.73
0.63
17
( 432 )
0.83
0.78
0.72
1.00
0.80
0.62
0.68
0.64
0.61
1.00
0.78
0.50
1.00
0.80
0.62
0.84
0.75
0.65
18
( 457 )
0.84
0.80
0.74
0.85
0.65
0.69
0.65
0.61
0.85
0.55
0.85
0.65
0.86
0.77
0.67
20
( 508 )
0.88
0.84
0.76
0.94
0.72
0.71
0.67
0.62
0.99
0.64
0.94
0.72
0.91
0.81
0.70
24
( 610 )
0.96
0.90
0.82
1.00
0.87
0.75
0.70
0.65
1.00
0.85
1.00
0.87
1.00
0.89
0.77
30
( 762 )
1.00
1.00
0.90
1.00
0.81
0.75
0.69
1.00
1.00
1.00
0.86
36
( 914 )
0.97
0.87
0.80
0.72
0.95
> 48
( 1219 )
1.00
1.00
0.90
0.80
1.00
ƒ HV
3.2.6
Table 10 — Load adjustment factors for 7 / 8 , 1 , and 1-1 / 4-in . diameter threaded rods in cracked concrete 1 , 2
7 / 8 , 1 & 1-1 / 4-in . threaded rods cracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in
4 shear
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.6 HVU2 CAPSULE 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 AV
Edge distance in shear
┴ Toward edge
ƒ RV
‖ To edge
ƒ RV
Concrete thickness
5 factor in shear
Thread size , in . 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 7 / 8 1 1 1 / 4 Embedment h ef in . 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 6-5 / 8 8-1 / 4 11 ( mm ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 ) ( 168 ) ( 210 ) ( 279 )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
4-3 / 8
( 111 )
0.58
n / a
n / a
0.53
n / a
n / a
0.55
n / a
n / a
0.14
n / a
n / a
0.28
n / a
n / a
n / a
n / a
n / a
5
( 127 )
0.60
0.58
n / a
0.56
0.53
n / a
0.55
0.54
n / a
0.17
0.12
n / a
0.35
0.25
n / a
n / a
n / a
n / a
6
( 152 )
0.61
0.60
n / a
0.61
0.58
n / a
0.56
0.55
n / a
0.23
0.16
n / a
0.46
0.33
n / a
n / a
n / a
n / a
6-1 / 4
( 159 )
0.62
0.60
0.58
0.62
0.59
0.53
0.56
0.55
0.54
0.24
0.17
0.11
0.49
0.35
0.23
n / a
n / a
n / a
7
( 178 )
0.63
0.62
0.59
0.66
0.62
0.56
0.57
0.56
0.54
0.29
0.21
0.13
0.57
0.41
0.27
n / a
n / a
n / a
8
( 203 )
0.65
0.63
0.61
0.71
0.66
0.59
0.58
0.57
0.55
0.35
0.25
0.16
0.70
0.51
0.33
n / a
n / a
n / a
8-5 / 8
( 219 )
0.67
0.64
0.61
0.75
0.69
0.61
0.59
0.57
0.55
0.39
0.28
0.18
0.75
0.57
0.37
0.60
n / a
n / a
9
( 229 )
0.67
0.65
0.62
0.77
0.71
0.62
0.59
0.57
0.56
0.42
0.30
0.20
0.77
0.60
0.39
0.61
n / a
n / a
10
( 254 )
0.69
0.67
0.63
0.82
0.75
0.66
0.60
0.58
0.56
0.49
0.35
0.23
0.82
0.71
0.46
0.64
n / a
n / a
10-1 / 2
( 267 )
0.70
0.68
0.64
0.85
0.78
0.67
0.61
0.59
0.57
0.53
0.38
0.25
0.85
0.76
0.49
0.66
0.59
n / a
11
( 279 )
0.71
0.68
0.65
0.88
0.80
0.69
0.61
0.59
0.57
0.57
0.41
0.26
0.88
0.80
0.53
0.68
0.61
n / a
12
( 305 )
0.73
0.70
0.66
0.94
0.85
0.73
0.62
0.60
0.57
0.65
0.46
0.30
0.94
0.85
0.60
0.71
0.63
n / a
13
( 330 )
0.75
0.72
0.67
1.00
0.90
0.76
0.63
0.61
0.58
0.73
0.52
0.34
1.00
0.90
0.68
0.73
0.66
n / a
13-3 / 4
( 349 )
0.76
0.73
0.68
0.94
0.79
0.64
0.61
0.59
0.79
0.57
0.37
0.94
0.74
0.76
0.68
0.59
14
( 356 )
0.77
0.73
0.68
0.95
0.80
0.65
0.62
0.59
0.81
0.59
0.38
0.95
0.76
0.76
0.68
0.59
15
( 381 )
0.79
0.75
0.70
1.00
0.84
0.66
0.62
0.59
0.90
0.65
0.42
1.00
0.84
0.79
0.71
0.61
16
( 406 )
0.81
0.77
0.71
0.88
0.67
0.63
0.60
0.99
0.71
0.46
0.88
0.81
0.73
0.63
17
( 432 )
0.83
0.78
0.72
0.92
0.68
0.64
0.61
1.00
0.78
0.51
0.92
0.84
0.75
0.65
18
( 457 )
0.84
0.80
0.74
0.96
0.69
0.65
0.61
0.85
0.55
0.96
0.86
0.77
0.67
20
( 508 )
0.88
0.84
0.76
1.00
0.71
0.67
0.62
1.00
0.65
1.00
0.91
0.82
0.71
24
( 610 )
0.96
0.90
0.82
0.75
0.70
0.65
0.85
1.00
0.89
0.77
30
( 762 )
1.00
1.00
0.90
0.81
0.75
0.69
1.00
1.00
0.87
36
( 914 )
0.97
0.87
0.80
0.72
0.95
> 48
( 1219 )
1.00
1.00
0.90
0.80
1.00
1 Linear interpolation not permitted 2 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 . 3 Spacing factor reduction in shear , ƒ AV
, is applicable when edge distance c < 3 * h ef . If c ≥ 3 * h ef
, then ƒ AV = ƒ AN
.
4 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 . ƒ HV
239