Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 283

Anchor Fastening Technical Guide , Edition 22
Table 8 — Load adjustment factors for M16 , M20 , and M24 Hilti HSL4 anchors in uncracked concrete 1 , 2
M16 , M20 and M24 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
Concrete thickness factor in shear 4
ƒ HV
Nominal dia . M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24
Effective embedment h ef in . ( mm )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
4
( 102 )
0.67
n / a
n / a
n / a
n / a
n / a
0.56
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
4-1 / 2
( 114 )
0.69
n / a
n / a
n / a
n / a
n / a
0.57
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
4-3 / 4
( 121 )
0.70
n / a
n / a
0.51
n / a
n / a
0.58
n / a
n / a
0.30
n / a
n / a
0.51
n / a
n / a
n / a
n / a
n / a
5
( 127 )
0.71
0.67
n / a
0.53
0.45
n / a
0.58
0.57
n / a
0.33
0.25
n / a
0.53
0.45
n / a
n / a
n / a
n / a
5-1 / 2
( 140 )
0.73
0.69
n / a
0.57
0.48
n / a
0.59
0.57
n / a
0.38
0.29
n / a
0.57
0.48
n / a
n / a
n / a
n / a
5-7 / 8
( 149 )
0.75
0.70
0.67
0.60
0.50
0.45
0.59
0.58
0.57
0.42
0.32
0.26
0.60
0.50
0.45
n / a
n / a
n / a
6
( 152 )
0.75
0.70
0.67
0.61
0.51
0.45
0.59
0.58
0.57
0.43
0.33
0.27
0.61
0.51
0.45
n / a
n / a
n / a
6-1 / 4
( 159 )
0.76
0.71
0.68
0.63
0.53
0.47
0.60
0.58
0.57
0.46
0.35
0.29
0.63
0.53
0.47
0.63
n / a
n / a
7
( 178 )
0.80
0.74
0.70
0.71
0.57
0.50
0.61
0.59
0.58
0.54
0.42
0.34
0.71
0.57
0.50
0.67
n / a
n / a
7-1 / 2
( 191 )
0.82
0.75
0.71
0.76
0.61
0.53
0.62
0.60
0.59
0.60
0.46
0.38
0.76
0.61
0.53
0.69
0.63
n / a
8
( 203 )
0.84
0.77
0.73
0.81
0.65
0.55
0.63
0.61
0.59
0.66
0.51
0.41
0.81
0.65
0.55
0.71
0.65
n / a
8-7 / 8
( 225 )
0.88
0.80
0.75
0.90
0.72
0.60
0.64
0.62
0.60
077
0.60
0.48
0.90
0.72
0.60
0.75
0.69
0.64
9
( 229 )
0.88
0.80
0.75
0.91
0.73
0.61
0.64
0.62
0.60
0.79
0.61
0.49
0.91
0.73
0.61
0.75
0.69
0.65
10
( 254 )
0.92
0.84
0.78
1.00
0.81
0.68
0.66
0.63
0.62
0.92
0.71
0.58
1.00
0.81
0.68
0.79
0.73
0.68
11
( 279 )
0.97
0.87
0.81
1.00
0.89
0.75
0.67
0.65
0.63
1.00
0.82
0.67
1.00
0.89
0.75
0.83
0.77
0.71
12
( 305 )
1.00
0.91
0.84
0.97
0.81
0.69
0.66
0.64
0.94
0.76
0.97
0.81
0.87
0.80
0.75
14
( 356 )
1.00
0.97
0.90
1.00
0.95
0.72
0.69
0.66
1.00
0.96
1.00
0.96
0.94
0.86
0.80
16
( 406 )
1.00
1.00
0.95
1.00
0.75
0.71
0.69
1.00
1.00
1.00
0.92
0.86
18
( 457 )
1.00
0.78
0.74
0.71
0.98
0.91
20
( 508 )
0.82
0.77
0.73
1.00
0.96
24
( 610 )
0.88
0.82
0.78
1.00
30
( 762 )
0.97
0.90
0.85
36
( 914 )
1.00
0.98
0.92
> 48
( 1219 )
1.00
1.00
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.3.2
Table 9 — Load adjustment factors for M8 , M10 , and M12 Hilti HSL4 anchors in cracked concrete 1 , 2
M16 , M20 and M24 HSL4 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
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
Concrete thickness factor in shear 4
ƒ HV
Nominal dia . M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24 M16 M20 M24
Effective embedment h ef in . ( mm )
Spacing ( s ) / edge distance ( c a ) / concrete thickness ( h ), - in ( mm )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
4
( 102 )
0.67
n / a
n / a
n / a
n / a
n / a
0.55
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
4-1 / 2
( 114 )
0.69
n / a
n / a
n / a
n / a
n / a
0.56
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
n / a
4-3 / 4
( 121 )
0.70
n / a
n / a
0.85
n / a
n / a
0.56
n / a
n / a
0.22
n / a
n / a
0.43
n / a
n / a
n / a
n / a
n / a
5
( 127 )
0.71
0.67
n / a
0.88
0.76
n / a
0.56
0.55
n / a
0.23
0.18
n / a
0.47
0.36
n / a
n / a
n / a
n / a
5-1 / 2
( 140 )
0.73
0.69
n / a
0.95
0.81
n / a
0.57
0.56
n / a
0.27
0.21
n / a
0.54
0.42
n / a
n / a
n / a
n / a
5-7 / 8
( 149 )
0.75
0.70
0.67
1.00
0.84
0.75
0.57
0.56
0.55
0.30
0.23
0.19
0.59
0.46
0.37
n / a
n / a
n / a
6
( 152 )
0.75
0.70
0.67
1.00
0.86
0.76
0.58
0.56
0.56
0.31
0.24
0.19
0.61
0.47
0.38
n / a
n / a
n / a
6-1 / 4
( 159 )
0.76
0.71
0.68
1.00
0.88
0.78
0.58
0.57
0.56
0.33
0.25
0.20
0.65
0.50
0.41
0.56
n / a
n / a
7
( 178 )
0.80
0.74
0.70
1.00
0.96
0.84
0.59
0.57
0.56
0.39
0.30
0.24
0.77
0.60
0.48
0.59
n / a
n / a
7-1 / 2
( 191 )
0.82
0.75
0.71
1.00
1.00
0.88
0.59
0.58
0.57
0.43
0.33
0.27
0.86
0.66
0.54
0.62
0.56
n / a
8
( 203 )
0.84
0.77
0.73
1.00
1.00
0.92
0.60
0.59
0.57
0.47
0.36
0.30
0.94
0.73
0.59
0.64
0.58
n / a
8-7 / 8
( 225 )
0.88
0.80
0.75
1.00
1.00
1.00
0.61
0.59
0.58
0.55
0.43
0.35
1.00
0.85
0.69
0.67
0.61
0.57
9
( 229 )
0.88
0.80
0.75
1.00
1.00
1.00
0.61
0.60
0.58
0.56
0.43
0.35
1.00
0.87
0.71
0.67
0.62
0.58
10
( 254 )
0.92
0.84
0.78
1.00
1.00
1.00
0.63
0.61
0.59
0.66
0.51
0.41
1.00
1.00
0.83
0.71
0.65
0.61
11
( 279 )
0.97
0.87
0.81
1.00
1.00
1.00
0.64
0.62
0.60
0.76
0.59
0.48
1.00
1.00
0.95
0.75
0.68
0.64
12
( 305 )
1.00
0.91
0.84
1.00
1.00
0.65
0.63
0.61
0.87
0.67
0.54
1.00
1.00
0.78
0.71
0.67
14
( 356 )
1.00
0.97
0.90
1.00
0.68
0.65
0.63
1.00
0.84
0.68
1.00
0.84
0.77
0.72
16
( 406 )
1.00
1.00
0.95
0.70
0.67
0.65
1.00
0.84
0.90
0.82
0.77
18
( 457 )
1.00
0.73
0.69
0.67
1.00
0.95
0.87
0.82
20
( 508 )
0.75
0.71
0.68
1.00
1.00
0.92
0.86
24
( 610 )
0.80
0.76
0.72
1.00
0.94
30
( 762 )
0.88
0.82
0.78
1.00
36
( 914 )
0.95
0.88
0.83
> 48
( 1219 )
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 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 .).
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
3.948 ( 100 )
4.92 ( 125 )
5.91 ( 150 )
279