Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 311

Anchor Fastening Technical Guide , Edition 22
Table 14 — Load adjustment factors for Carbon Steel 3 / 4-in . diameter KB-TZ2 in uncracked concrete 1 , 2
3 / 4-in . KB-TZ2 uncracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
ƒ AV
Edge distance in shear
┴ Toward edge
ƒ RV
‖ To edge
ƒ RV
Concrete thickness factor
4 in shear
Effective Embedment
in .
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
h ef
( mm )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
Nominal Embedment
in .
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
h nom
( mm )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
ƒ HV
Spacing ( s ) / Edge Distance ( c a
) / Concrete Thickness ( h ) - in . ( mm )
3-1 / 2
( 89 )
n / a
n / a
n / a
n / a
n / a
0.50
n / a
n / a
n / a
n / a
n / a
0.16
n / a
n / a
0.32
n / a
n / a
n / a
3-3 / 4
( 95 )
n / a
0.67
0.63
n / a
n / a
0.52
n / a
0.56
0.55
n / a
n / a
0.18
n / a
n / a
0.36
n / a
n / a
n / a
4
( 102 )
n / a
0.68
0.64
n / a
0.44
0.54
n / a
0.56
0.56
n / a
0.24
0.20
n / a
0.44
0.40
n / a
n / a
n / a
4-1 / 2
( 114 )
0.73
0.70
0.66
n / a
0.48
0.57
0.56
0.57
0.56
n / a
0.29
0.24
n / a
0.48
0.47
n / a
n / a
n / a
4-3 / 4
( 121 )
0.74
0.71
0.67
n / a
0.49
0.59
0.57
0.58
0.57
n / a
0.31
0.26
n / a
0.49
0.51
n / a
n / a
n / a
5
( 127 )
0.76
0.72
0.68
0.42
0.51
0.61
0.57
0.58
0.57
0.27
0.33
0.28
0.42
0.51
0.55
n / a
n / a
n / a
5-1 / 2
( 140 )
0.78
0.74
0.69
0.46
0.55
0.65
0.58
0.59
0.58
0.31
0.39
0.32
0.46
0.55
0.64
0.55
n / a
n / a
5-3 / 4
( 146 )
0.79
0.76
0.70
0.48
0.58
0.67
0.58
0.59
0.58
0.33
0.41
0.34
0.48
0.58
0.67
0.57
n / a
n / a
6
( 152 )
0.81
0.77
0.71
0.50
0.60
0.69
0.58
0.60
0.58
0.35
0.44
0.36
0.50
0.60
0.69
0.58
0.62
n / a
7
( 178 )
0.86
0.81
0.75
0.58
0.70
0.78
0.60
0.61
0.60
0.45
0.55
0.46
0.58
0.70
0.78
0.62
0.67
n / a
7-1 / 4
( 184 )
0.87
0.82
0.75
0.60
0.73
0.81
0.60
0.62
0.60
0.47
0.58
0.48
0.60
0.73
0.81
0.63
0.68
n / a
8
( 203 )
0.91
0.86
0.78
0.67
0.80
0.89
0.61
0.63
0.61
0.54
0.68
0.56
0.67
0.80
0.89
0.67
0.72
0.67
9
( 229 )
0.96
0.90
0.82
0.75
0.90
1.00
0.63
0.64
0.63
0.65
0.81
0.67
0.75
0.90
1.00
0.71
0.76
0.71
10
( 254 )
1.00
0.94
0.85
0.83
1.00
0.64
0.66
0.64
0.76
0.94
0.78
0.83
1.00
0.75
0.80
0.75
11
( 279 )
0.99
0.89
0.92
0.65
0.68
0.66
0.88
1.00
0.90
0.92
0.78
0.84
0.79
12
( 305 )
1.00
0.92
1.00
0.67
0.69
0.67
1.00
1.00
1.00
0.82
0.88
0.82
16
( 406 )
1.00
0.72
0.76
0.73
0.94
1.00
0.95
18
( 457 )
0.75
0.79
0.75
1.00
1.00
24
( 610 )
0.83
0.89
0.84
> 36
( 914 )
1.00
1.00
1.00
3.3.5
Table 15 — Load adjustment factors for Carbon Steel 3 / 4-in . diameter KB-TZ2 in cracked concrete 1 , 2
3 / 4-in . KB-TZ2 cracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 3
ƒ AV
Edge distance in shear
┴ Toward edge
ƒ RV
‖ To edge
ƒ RV
Concrete thickness factor
4 in shear
Effective Embedment
in .
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
3-1 / 4
3-3 / 4
4-3 / 4
h ef
( mm )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
( 83 )
( 95 )
( 121 )
Nominal Embedment
in .
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
4
4-1 / 2
5-1 / 2
h nom
( mm )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
( 102 )
( 114 )
( 140 )
ƒ HV
Spacing ( s ) / Edge Distance ( c a
) / Concrete Thickness ( h ) - in . ( mm )
3-1 / 2
( 89 )
n / a
n / a
n / a
n / a
n / a
0.63
n / a
n / a
n / a
n / a
n / a
0.13
n / a
n / a
0.26
n / a
n / a
n / a
3-3 / 4
( 95 )
n / a
0.67
0.63
n / a
n / a
0.65
n / a
0.56
0.55
n / a
n / a
0.15
n / a
n / a
0.29
n / a
n / a
n / a
4
( 102 )
n / a
0.68
0.64
n / a
0.78
0.68
n / a
0.56
0.55
n / a
0.22
0.16
n / a
0.44
0.32
n / a
n / a
n / a
4-1 / 2
( 114 )
0.73
0.70
0.66
n / a
0.85
0.73
0.58
0.57
0.56
n / a
0.26
0.19
n / a
0.52
0.39
n / a
n / a
n / a
4-3 / 4
( 121 )
0.74
0.71
0.67
n / a
0.88
0.75
0.58
0.57
0.56
n / a
0.28
0.21
n / a
0.57
0.42
n / a
n / a
n / a
5
( 127 )
0.76
0.72
0.68
1.00
0.91
0.77
0.59
0.58
0.56
0.37
0.31
0.23
0.74
0.61
0.45
n / a
n / a
n / a
5-1 / 2
( 140 )
0.78
0.74
0.69
1.00
0.98
0.83
0.59
0.58
0.57
0.43
0.35
0.26
0.85
0.71
0.52
0.61
n / a
n / a
5-3 / 4
( 146 )
0.79
0.76
0.70
1.00
1.00
0.85
0.60
0.59
0.57
0.46
0.38
0.28
0.91
0.76
0.56
0.63
n / a
n / a
6
( 152 )
0.81
0.77
0.71
1.00
1.00
0.88
0.60
0.59
0.57
0.49
0.40
0.30
0.97
0.81
0.59
0.64
0.60
n / a
7
( 178 )
0.86
0.81
0.75
1.00
0.99
0.62
0.61
0.59
0.61
0.51
0.37
1.00
1.00
0.75
0.69
0.65
n / a
7-1 / 4
( 184 )
0.87
0.82
0.75
1.00
0.62
0.61
0.59
0.64
0.54
0.39
1.00
1.00
0.79
0.71
0.66
n / a
8
( 203 )
0.91
0.86
0.78
0.64
0.62
0.60
0.75
0.62
0.46
0.91
0.74
0.70
0.63
9
( 229 )
0.96
0.90
0.82
0.65
0.64
0.61
0.89
0.74
0.54
1.00
0.79
0.74
0.67
10
( 254 )
1.00
0.94
0.85
0.67
0.65
0.62
1.00
0.87
0.64
0.83
0.78
0.70
11
( 279 )
0.99
0.89
0.69
0.67
0.64
1.00
0.74
0.87
0.82
0.74
12
( 305 )
1.00
0.92
0.71
0.68
0.65
0.84
0.91
0.85
0.77
16
( 406 )
1.00
0.77
0.74
0.70
1.00
1.00
0.98
0.89
18
( 457 )
0.81
0.77
0.72
1.00
0.94
24
( 610 )
0.91
0.86
0.80
1.00
> 36
( 914 )
1.00
1.00
0.94
1 Linear interpolation not permitted 2 When combining multiple load adjustment factors ( e . g . for a 4 anchor pattern in a corner with thin concrete member ) the design can become very conservative .
To optimize the design , use Hilti PROFIS Engineering Design software or perform anchor calculation using design equations from ACI 318 Ch . 17 or CSA A23.3 Annex D . 3 Spacing factor reduction in shear , f AV
, is applicable when edge distance c < 3h ef . If c ≥ 3h ef then f AV = f AN
.
4 Concrete thickness reduction factor in shear , f HV , is applicable when edge distance c < 3h ef
. If c ≥ 3h ef then f HV
= 1.0 .
If a reduction factor value is in a shaded cell , this indicates that this specific edge distance may not be permitted with a certain spacing ( or vice versa ). Check with Figure 2 and Table 5 to calculate permissible edge distance , spacing and concrete thickness combinations .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.5 KWIK BOLT TZ2 EXPANSION ANCHOR 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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