Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 270

Table 6 — Load adjustment factors for M10 and M12 Hilti HDA-P and HDA-T carbon and stainless steel anchors in uncracked concrete 1 , 2
M10 and M12 HDA-P and HDA-T uncracked concrete
Spacing ( s ) / edge distance ( c a
) / concrete thickness ( h ) - in . ( mm )
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
II to and away from edge
ƒ RV
Conc . thickness factor in shear 4
ƒ HV
Nominal diameter
M10
M12
M10
M12
M10
M12
M10
M12
M10
M12
M10
M12
Effective mm
100
125
100
125
100
125
100
125
100
125
100
125
embedment h ef
( in .)
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
3-1 / 8
( 79 )
n / a
n / a
0.66
n / a
n / a
n / a
0.14
n / a
0.28
n / a
n / a
n / a
3-1 / 2
( 89 )
n / a
n / a
0.70
n / a
n / a
n / a
0.17
n / a
0.33
n / a
n / a
n / a
4
( 102 )
0.67
n / a
0.76
0.66
0.56
n / a
0.20
0.15
0.40
0.31
n / a
n / a
4-1 / 2
( 114 )
0.69
n / a
0.82
0.71
0.56
n / a
0.24
0.18
0.48
0.37
n / a
n / a
5
( 127 )
0.71
0.67
0.88
0.76
0.57
0.56
0.28
0.22
0.56
0.43
n / a
n / a
6
( 152 )
0.75
0.70
1.00
0.86
0.59
0.57
0.37
0.28
0.74
0.57
n / a
n / a
7
( 178 )
0.80
0.74
0.96
0.60
0.58
0.47
0.36
0.93
0.71
n / a
n / a
7-1 / 8
( 181 )
0.80
0.74
0.97
0.60
0.59
0.48
0.37
0.96
0.73
0.64
n / a
7-1 / 2
( 191 )
0.82
0.75
1.00
0.61
0.59
0.52
0.40
1.00
0.79
0.66
n / a
8
( 203 )
0.84
0.77
0.61
0.60
0.57
0.44
0.87
0.68
0.62
9
( 229 )
0.88
0.80
0.63
0.61
0.68
0.52
1.00
0.72
0.66
10
( 254 )
0.92
0.84
0.64
0.62
0.80
0.61
0.76
0.69
11
( 279 )
0.97
0.87
0.66
0.63
0.92
0.70
0.79
0.73
12
( 305 )
1.00
0.91
0.67
0.64
1.00
0.80
0.83
0.76
14
( 356 )
0.97
0.70
0.67
1.00
0.90
0.82
16
( 406 )
1.00
0.73
0.69
0.96
0.88
18
( 457 )
0.76
0.72
1.00
0.93
20
( 508 )
0.79
0.74
0.98
24
( 610 )
0.84
0.79
1.00
30
( 762 )
0.93
0.86
36
( 914 )
1.00
0.93
42
( 1067 )
1.00
Table 7 — Load adjustment factors for M10 and M12 Hilti HDA-P and HDA-T carbon and stainless steel anchors in cracked concrete 1 , 2
M10 and M12 HDA-P and HDA-T 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
II to and away from edge
ƒ RV
Conc . thickness factor in shear 4
ƒ HV
Nominal diameter
M10
M12
M10
M12
M10
M12
M10
M12
M10
M12
M10
M12
Effective mm
100
125
100
125
100
125
100
125
100
125
100
125
embedment h ef
( in .)
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
3-1 / 8
( 79 )
n / a
n / a
0.66
n / a
n / a
n / a
0.12
n / a
0.25
n / a
n / a
n / a
3-1 / 2
( 89 )
n / a
n / a
0.70
n / a
n / a
n / a
0.15
n / a
0.29
n / a
n / a
n / a
4
( 102 )
0.67
n / a
0.76
0.66
0.55
n / a
0.18
0.14
0.36
0.27
n / a
n / a
4-1 / 2
( 114 )
0.69
n / a
0.82
0.71
0.56
n / a
0.21
0.16
0.43
0.33
n / a
n / a
5
( 127 )
0.71
0.67
0.88
0.76
0.57
0.56
0.25
0.19
0.50
0.38
n / a
n / a
6
( 152 )
0.75
0.70
1.00
0.86
0.58
0.57
0.33
0.25
0.66
0.50
n / a
n / a
7
( 178 )
0.80
0.74
0.96
0.59
0.58
0.42
0.32
0.83
0.64
n / a
n / a
7-1 / 8
( 181 )
0.80
0.74
0.97
0.59
0.58
0.43
0.33
0.86
0.65
0.62
n / a
7-1 / 2
( 191 )
0.82
0.75
1.00
0.60
0.58
0.46
0.35
0.92
0.71
0.63
n / a
8
( 203 )
0.84
0.77
0.61
0.59
0.51
0.39
1.00
0.78
0.65
0.60
9
( 229 )
0.88
0.80
0.62
0.60
0.61
0.46
0.93
0.69
0.63
10
( 254 )
0.92
0.84
0.63
0.61
0.71
0.54
1.00
0.73
0.67
11
( 279 )
0.97
0.87
0.65
0.62
0.82
0.63
0.76
0.70
12
( 305 )
1.00
0.91
0.66
0.63
0.94
0.71
0.80
0.73
14
( 356 )
0.97
0.69
0.66
1.00
0.90
0.86
0.79
16
( 406 )
1.00
0.71
0.68
1.00
0.92
0.84
18
( 457 )
0.74
0.70
0.98
0.89
20
( 508 )
0.77
0.72
1.00
0.94
24
( 610 )
0.82
0.77
1.00
30
( 762 )
0.90
0.83
36
( 914 )
0.98
0.90
42
( 1067 )
1.00
0.97
> 48
( 1219 )
1.00
Spacing ( s ) / edge distance ( c a
) / concrete thickness ( h ) - in . ( mm )
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 PROFIS Engineering or perform anchor calculation using design equations from ACI 318 Chapter 17 .
3 Spacing factor reduction in shear , ƒ AV , assumes an influence of a nearby edge . If no edge exists , then ƒ AV
= ƒ AN .
4 Concrete thickness reduction ƒactor in shear , ƒ HV , assumes an influence of a nearby edge . If no edge exists , then ƒ HV
= 1.0 .
266 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.1 HDA UNDERCUT ANCHORS 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