Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 282

Table 6 — Load adjustment factors for M8 , M10 , and M12 Hilti HSL4 anchors in uncracked concrete 1 , 2
M8 , M10 and M12 HSL4 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
II to and away from edge
ƒ RV
Table 7 — Load adjustment factors for M8 , M10 , and M12 Hilti HSL4 anchors in cracked concrete 1 , 2
Concrete thickness factor in shear 4
ƒ HV
Nominal dia . M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12
Effective embedment h ef in . ( mm )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.36 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
2-3 / 8
( 60 )
0.67
n / a
n / a
0.45
n / a
n / a
0.58
n / a
n / a
0.32
n / a
n / a
0.45
n / a
n / a
n / a
n / a
n / a
2-1 / 2
( 64 )
0.68
n / a
n / a
0.47
n / a
n / a
0.58
n / a
n / a
0.35
n / a
n / a
0.47
n / a
n / a
n / a
n / a
n / a
2-3 / 4
( 70 )
0.69
0.67
n / a
0.50
0.45
n / a
0.59
0.55
n / a
0.40
0.18
n / a
0.50
0.36
n / a
n / a
n / a
n / a
3
( 76 )
0.71
0.68
n / a
0.53
0.48
n / a
0.60
0.56
n / a
0.46
0.20
n / a
0.53
0.41
n / a
n / a
n / a
n / a
3-1 / 8
( 79 )
0.72
0.69
0.67
0.55
0.49
n / a
0.60
0.56
0.56
0.49
0.22
n / a
0.55
0.44
n / a
n / a
n / a
n / a
3-1 / 2
( 89 )
0.75
0.71
0.69
0.60
0.53
0.48
0.62
0.57
0.56
0.58
0.26
0.23
0.60
0.52
0.46
n / a
n / a
n / a
4
( 102 )
0.78
0.74
0.71
0.68
0.59
0.53
0.63
0.58
0.57
0.71
0.32
0.28
0.71
0.59
0.53
n / a
n / a
n / a
4-3 / 8
( 111 )
0.81
0.76
0.73
0.74
0.64
0.56
0.65
0.58
0.58
0.81
0.36
0.32
0.81
0.64
0.56
0.76
n / a
n / a
4-1 / 2
( 114 )
0.82
0.77
0.74
0.77
0.65
0.58
0.65
0.59
0.58
0.85
0.38
0.34
0.85
0.65
0.58
0.77
n / a
n / a
4-3 / 4
( 121 )
0.84
0.79
0.75
0.81
0.69
0.60
0.66
0.59
0.59
0.92
0.41
0.37
0.92
0.69
0.60
0.79
0.61
n / a
5
( 127 )
0.85
0.80
0.76
0.85
0.73
0.63
0.67
0.60
0.59
0.99
0.44
0.40
0.99
0.73
0.63
0.81
0.62
n / a
5-3 / 8
( 137 )
0.88
0.83
0.78
0.91
0.78
0.68
0.68
0.60
0.60
1.00
0.49
0.44
1.00
0.78
0.68
0.84
0.64
0.62
6
( 152 )
0.92
0.86
0.82
1.00
0.87
0.76
0.70
0.62
0.61
0.58
0.52
0.87
0.76
0.89
0.68
0.66
7
( 178 )
0.99
0.92
0.87
1.00
0.89
0.73
0.64
0.63
0.73
0.65
1.00
0.89
0.96
0.73
0.71
8
( 203 )
1.00
0.98
0.92
1.00
0.77
0.65
0.64
0.89
0.80
1.00
1.00
0.79
0.76
9
( 229 )
1.00
0.98
0.80
0.67
0.66
1.00
0.95
0.83
0.80
10
( 254 )
1.00
1.00
. 083
0.69
0.68
1.00
0.88
0.85
12
( 305 )
1.00
1.00
0.90
0.73
0.72
0.96
0.93
14
( 356 )
1.00
0.96
0.77
0.75
1.00
1.00
16
( 406 )
1.00
0.81
0.79
18
( 457 )
0.85
0.82
20
( 508 )
0.89
0.86
24
( 610 )
0.96
0.93
> 30
( 762 )
1.00
1.00
M8 , M10 and M12 HSL4 cracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
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 software 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 factor in shear , ƒ HV , assumes an influence of a nearby edge . If no edge exists , then ƒ HV = 1.0 . If a reduction factor value is in a shaded cell , it may not be permitted if both edge and spacing are less than “ critical ” distances . Check table 5 and figure 2 of this section to calculate permissible edge distance , spacing and concrete thickness combinations . For the HSL4-SH M8 , M10 and M12 diameters , the minimum slab thickness must be increased by 5 mm ( 3 / 16-in .).
278 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.2 HSL4 HEAVY-DUTY EXPANSION 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
3.15 ( 80 )
Spacing factor in shear 3
ƒ AV
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
Edge distance in shear
┴ Toward edge
ƒ RV
3.15 ( 80 )
II to and away from edge
ƒ RV
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
Concrete thickness factor in shear 4
ƒ HV
Nominal dia . M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12 M8 M10 M12
Effective embedment h ef in . ( mm )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.36 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
2-3 / 8
( 60 )
0.67
n / a
n / a
0.75
n / a
n / a
0.58
n / a
n / a
0.33
n / a
n / a
0.65
n / a
n / a
n / a
n / a
n / a
2-1 / 2
( 64 )
0.68
n / a
n / a
0.78
n / a
n / a
0.58
n / a
n / a
0.35
n / a
n / a
0.71
n / a
n / a
n / a
n / a
n / a
2-3 / 4
( 70 )
0.69
0.67
n / a
0.83
0.75
n / a
0.59
0.54
n / a
0.41
0.13
n / a
0.82
0.28
n / a
n / a
n / a
n / a
3
( 76 )
0.71
0.68
n / a
0.88
0.79
n / a
0.60
0.55
n / a
0.46
0.15
n / a
0.88
0.29
n / a
n / a
n / a
n / a
3-1 / 8
( 79 )
0.72
0.69
0.67
0.91
0.81
n / a
0.60
0.55
0.54
0.49
0.16
n / a
0.91
0.31
n / a
n / a
n / a
n / a
3-1 / 2
( 89 )
0.75
0.71
0.69
0.99
0.88
0.80
0.62
0.55
0.55
0.59
0.18
0.17
0.99
0.37
0.33
n / a
n / a
n / a
4
( 102 )
0.78
0.74
0.71
1.00
0.97
0.88
0.63
0.56
0.56
0.72
0.23
0.20
1.00
0.45
0.40
n / a
n / a
n / a
4-3 / 8
( 111 )
0.81
0.76
0.73
1.00
0.94
0.65
0.57
0.56
0.82
0.26
0.23
0.51
0.46
0.76
n / a
n / a
4-1 / 2
( 114 )
0.82
0.77
0.74
1.00
0.96
0.65
0.57
0.56
0.85
0.27
0.24
0.54
0.48
0.77
n / a
n / a
4-3 / 4
( 121 )
0.84
0.79
0.75
1.00
1.00
0.66
0.57
0.57
0.93
0.29
0.26
0.58
0.52
0.80
0.54
n / a
5
( 127 )
0.85
0.80
0.76
1.00
1.00
0.67
0.58
0.57
1.00
0.31
0.28
0.63
0.56
0.82
0.56
n / a
5-3 / 8
( 137 )
0.88
0.83
0.78
1.00
1.00
0.68
0.58
0.58
0.35
0.31
0.70
0.63
0.85
0.58
0.56
6
( 152 )
0.92
0.86
0.82
1.00
1.00
0.70
0.59
0.59
0.41
0.37
0.83
0.74
0.89
0.61
0.59
7
( 178 )
0.99
0.92
0.87
1.00
1.00
0.73
0.61
0.60
0.52
0.47
1.00
0.93
0.97
0.66
0.63
8
( 203 )
1.00
0.98
0.92
1.00
0.77
0.62
0.61
0.64
0.57
1.00
1.00
0.70
0.68
9
( 229 )
1.00
0.98
0.80
0.67
0.63
1.00
0.68
0.74
0.72
10
( 254 )
1.00
1.00
. 083
0.65
0.64
0.89
0.80
0.79
0.76
12
( 305 )
1.00
1.00
0.90
0.69
0.67
1.00
1.00
0.86
0.83
14
( 356 )
1.00
0.96
0.72
0.70
1.93
0.90
16
( 406 )
1.00
0.75
0.73
0.99
0.96
18
( 457 )
0.78
0.76
1.00
1.00
20
( 508 )
0.81
0.86
24
( 610 )
0.87
0.84
> 30
( 762 )
0.96
0.93
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )
2.38 ( 60 )
2.76 ( 70 )
3.15 ( 80 )