Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 48

Table 16 — Load adjustment factors for 3 / 4-in . diameter Hilti HIT-Z and HIT-Z-R rods in uncracked concrete 1 , 2
3 / 4-in . HIT-Z ( -R ) uncracked concrete
1 Linear interpolation not permitted .
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
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 or CSA A23.3 Annex D .
3 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
.
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 .
If a reduction factor value is in a shaded area , this indicates that this specific edge distance may not be permitted with a certain spacing ( or vice versa ). Check with figure 6 and table 9 of this section to calculate permissible edge distance , spacing and concrete thickness combinations .
ƒ AV
┴ Toward edge
ƒ RV
Edge distance in shear
⃦ To and away from edge
ƒ RV
Concrete thickness factor in shear 4
Embedment h ef
in .
( mm )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
3-3 / 4
( 95 )
0.66
0.59
0.57
n / a
n / a
n / a
0.56
0.54
0.53
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
4
( 102 )
0.67
0.60
0.58
n / a
n / a
0.21
0.57
0.54
0.53
n / a
n / a
0.08
n / a
n / a
0.17
n / a
n / a
n / a
4-1 / 8
( 105 )
0.67
0.60
0.58
n / a
n / a
0.21
0.57
0.54
0.53
n / a
n / a
0.09
n / a
n / a
0.18
n / a
n / a
n / a
4-1 / 4
( 108 )
0.68
0.60
0.58
n / a
0.24
0.21
0.57
0.54
0.53
n / a
0.13
0.09
n / a
0.26
0.19
n / a
n / a
n / a
5
( 127 )
0.71
0.62
0.60
0.39
0.26
0.23
0.58
0.55
0.54
0.35
0.17
0.12
0.39
0.32
0.23
n / a
n / a
n / a
5-3 / 4
( 146 )
0.74
0.64
0.61
0.44
0.28
0.24
0.59
0.56
0.55
0.43
0.21
0.15
0.44
0.34
0.24
0.61
n / a
n / a
6
( 152 )
0.75
0.65
0.62
0.45
0.28
0.24
0.60
0.56
0.55
0.45
0.22
0.16
0.45
0.35
0.24
0.63
n / a
n / a
7
( 178 )
0.79
0.67
0.64
0.53
0.31
0.27
0.61
0.57
0.56
0.57
0.28
0.20
0.57
0.38
0.27
0.68
n / a
n / a
8
( 203 )
0.83
0.70
0.66
0.60
0.34
0.29
0.63
0.58
0.56
0.70
0.34
0.24
0.70
0.42
0.29
0.72
n / a
n / a
8-1 / 2
( 216 )
0.85
0.71
0.67
0.64
0.36
0.30
0.64
0.59
0.57
0.77
0.37
0.26
0.77
0.44
0.30
0.75
0.59
n / a
9
( 229 )
0.88
0.72
0.68
0.68
0.37
0.31
0.65
0.59
0.57
0.83
0.40
0.29
0.83
0.45
0.31
0.77
0.60
n / a
10
( 254 )
0.92
0.75
0.70
0.75
0.40
0.33
0.66
0.60
0.58
0.98
0.47
0.33
0.98
0.49
0.33
0.81
0.64
n / a
10-1 / 4
( 260 )
0.93
0.75
0.70
0.77
0.41
0.34
0.67
0.60
0.58
1.00
0.49
0.35
1.00
0.50
0.35
0.82
0.64
0.57
11
( 279 )
0.96
0.77
0.72
0.83
0.44
0.35
0.68
0.61
0.59
1.00
0.55
0.39
1.00
0.55
0.39
0.85
0.67
0.59
12
( 305 )
1.00
0.80
0.74
0.90
0.48
0.38
0.70
0.62
0.60
1.00
0.62
0.44
1.00
0.62
0.44
0.89
0.70
0.62
14
( 356 )
1.00
0.85
0.77
1.00
0.56
0.43
0.73
0.64
0.61
1.00
0.78
0.55
1.00
0.78
0.55
0.96
0.75
0.67
16
( 406 )
1.00
0.90
0.81
1.00
0.64
0.50
0.76
0.66
0.63
1.00
0.96
0.68
1.00
0.96
0.68
1.00
0.80
0.72
18
( 457 )
1.00
0.94
0.85
1.00
0.72
0.56
0.80
0.68
0.64
1.00
1.00
0.81
1.00
1.00
0.81
0.85
0.76
24
( 610 )
1.00
1.00
0.97
1.00
0.97
0.75
0.89
0.74
0.69
1.00
1.00
1.00
1.00
0.99
0.88
30
( 762 )
1.00
1.00
1.00
0.93
0.99
0.80
0.74
1.00
0.98
36
( 914 )
1.00
1.00
0.86
0.79
1.00
> 48
( 1219 )
0.99
0.89
Spacing ( s ) / Edge distance ( c a ) / Concrete thickness ( h ), - in . ( mm )
Table 17 — Load adjustment factors for 3 / 4-in . diameter Hilti HIT-Z and HIT-Z-R rods in cracked concrete 1 , 2
3 / 4-in . HIT-Z ( -R ) cracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
ƒ AV
┴ Toward edge
ƒ RV
Edge distance in shear
⃦ To and away from edge
ƒ RV ƒ HV
Concrete thickness factor in shear 4
Embedment h ef
in .
( mm )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
4
( 102 )
6-3 / 4
( 171 )
8-1 / 2
( 216 )
3-3 / 4
( 95 )
0.66
0.59
0.57
n / a
0.56
0.51
0.56
0.54
0.53
n / a
0.11
0.08
n / a
0.22
0.16
n / a
n / a
n / a
4
( 102 )
0.67
0.60
0.58
n / a
0.57
0.52
0.57
0.54
0.53
n / a
0.12
0.09
n / a
0.24
0.17
n / a
n / a
n / a
4-1 / 8
( 105 )
0.67
0.60
0.58
0.76
0.58
0.53
0.57
0.54
0.53
0.26
0.13
0.09
0.52
0.25
0.18
n / a
n / a
n / a
4-1 / 4
( 108 )
0.68
0.60
0.58
0.78
0.59
0.53
0.57
0.54
0.53
0.27
0.13
0.09
0.55
0.26
0.19
n / a
n / a
n / a
5
( 127 )
0.71
0.62
0.60
0.87
0.63
0.57
0.58
0.55
0.54
0.35
0.17
0.12
0.70
0.34
0.24
n / a
n / a
n / a
5-3 / 4
( 146 )
0.74
0.64
0.61
0.97
0.68
0.61
0.59
0.56
0.55
0.43
0.21
0.15
0.86
0.42
0.29
0.62
n / a
n / a
6
( 152 )
0.75
0.65
0.62
1.00
0.70
0.62
0.60
0.56
0.55
0.46
0.22
0.16
0.92
0.44
0.31
0.63
n / a
n / a
7
( 178 )
0.79
0.67
0.64
1.00
0.77
0.67
0.62
0.57
0.56
0.58
0.28
0.20
1.00
0.56
0.40
0.68
n / a
n / a
8
( 203 )
0.83
0.70
0.66
1.00
0.84
0.72
0.63
0.58
0.56
0.70
0.34
0.24
1.00
0.68
0.48
0.73
n / a
n / a
8-1 / 2
( 216 )
0.85
0.71
0.67
1.00
0.88
0.75
0.64
0.59
0.57
0.77
0.37
0.26
1.00
0.75
0.53
0.75
0.59
n / a
9
( 229 )
0.88
0.72
0.68
1.00
0.91
0.78
0.65
0.59
0.57
0.84
0.41
0.29
1.00
0.82
0.58
0.77
0.61
n / a
10
( 254 )
0.92
0.75
0.70
1.00
0.99
0.83
0.67
0.60
0.58
0.99
0.48
0.34
1.00
0.95
0.68
0.81
0.64
n / a
10-1 / 4
( 260 )
0.93
0.75
0.70
1.00
1.00
0.85
0.67
0.60
0.58
1.00
0.50
0.35
1.00
0.99
0.70
0.82
0.65
0.58
11
( 279 )
0.96
0.77
0.72
1.00
0.89
0.68
0.61
0.59
1.00
0.55
0.39
1.00
1.00
0.78
0.85
0.67
0.60
12
( 305 )
1.00
0.80
0.74
1.00
0.95
0.70
0.62
0.60
1.00
0.63
0.44
1.00
0.89
0.89
0.70
0.62
14
( 356 )
1.00
0.85
0.77
1.00
1.00
0.73
0.64
0.61
1.00
0.79
0.56
1.00
1.00
0.96
0.76
0.67
16
( 406 )
1.00
0.90
0.81
0.76
0.66
0.63
0.97
0.68
1.00
0.81
0.72
18
( 457 )
1.00
0.94
0.85
0.80
0.68
0.65
1.00
0.82
0.86
0.76
24
( 610 )
1.00
1.00
0.97
0.90
0.74
0.69
1.00
0.99
0.88
30
( 762 )
1.00
1.00
0.81
0.74
1.00
0.98
36
( 914 )
1.00
0.87
0.79
1.00
> 48
( 1219 )
0.99
0.89
Spacing ( s ) / Edge distance ( c a ) / Concrete thickness ( h ), - in . ( mm ) ƒ HV
44 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.2 HILTI HIT-HY 200 A / R V3 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