Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 293

Anchor Fastening Technical Guide , Edition 22
Table 8 — Load adjustment factors for M16 and M20 , HSL-3-R anchors in uncracked concrete 1 , 4
M16 and M20 HSL-3-R Uncracked Concrete
Spacing Factor in Tension
f AN
Edge Distance Factor in Tension
f RN
Spacing Factor in
Shear 2
f AV
Edge Distance in Shear
┴ Toward Edge
f RV
⃦ To Edge
f RV
Conc . Thickness Factor in Shear 3
f HV
Nominal Diameter mm M16 M20 M16 M20 M16 M20 M16 M20 M16 M20 M16 M20
Spacing ( s ) / Edge Distance ( c a ) / Concrete Thickness ( h ) - in . ( mm )
Effective Embed . h ef mm ( in )
100
125
100
125
100
125
100
125
100
125
100
125
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
4
( 102 )
0.67
n / a
0.47
n / a
0.56
n / a
0.21
n / a
0.42
n / a
n / a
n / a
5
( 127 )
0.71
0.67
0.55
n / a
0.57
0.56
0.29
n / a
0.55
n / a
n / a
n / a
5-7 / 8
( 149 )
0.75
0.70
0.62
0.41
0.59
0.57
0.37
0.26
0.62
0.41
n / a
n / a
6
( 152 )
0.75
0.70
0.63
0.42
0.59
0.57
0.38
0.27
0.63
0.42
n / a
n / a
7
( 178 )
0.80
0.74
0.74
0.47
0.60
0.58
0.48
0.33
0.74
0.47
n / a
n / a
7-7 / 8
( 200 )
0.83
0.77
0.83
0.53
0.62
0.59
0.57
0.40
0.83
0.53
0.68
n / a
8
( 203 )
0.84
0.77
0.84
0.53
0.62
0.59
0.59
0.41
0.84
0.53
0.68
n / a
9
( 229 )
0.88
0.80
0.95
0.60
0.63
0.60
0.70
0.49
0.95
0.60
0.73
n / a
9-1 / 2
( 241 )
0.90
0.82
1.00
0.63
0.64
0.61
0.76
0.53
1.00
0.63
0.74
n / a
9-7 / 8
( 251 )
0.92
0.83
0.66
0.64
0.61
0.80
0.56
0.66
0.76
0.67
10
( 254 )
0.92
0.84
0.67
0.65
0.61
0.82
0.57
0.67
0.76
0.68
11
( 279 )
0.97
0.87
0.73
0.66
0.63
0.95
0.66
0.73
0.80
0.71
11-7 / 8
( 302 )
1.00
0.90
0.79
0.67
0.64
1.00
0.74
0.79
0.83
0.74
12
( 305 )
0.91
0.80
0.68
0.64
0.75
0.80
0.84
0.74
13
( 330 )
0.94
0.87
0.69
0.65
0.85
0.87
0.87
0.77
14
( 356 )
0.97
0.93
0.70
0.66
0.94
0.94
0.90
0.80
15
( 381 )
1.00
1.00
0.72
0.67
1.00
1.00
0.94
0.83
16
( 406 )
0.73
0.68
0.97
0.86
18
( 457 )
0.76
0.71
1.00
0.91
20
( 508 )
0.79
0.73
0.96
24
( 610 )
0.85
0.78
1.00
30
( 762 )
0.94
0.84
36
( 914 )
1.00
0.91
> 48
( 1219 )
1.00
3.3.3
Table 9 — Load adjustment factors for M16 , and M20 , HSL-3-R anchors in cracked concrete 1 , 4
M16 and M20 HSL-3-R Uncracked Concrete
Spacing Factor in Tension
f AN
Edge Distance Factor in Tension
f RN
Spacing Factor in
Shear 2
f AV
Edge Distance in Shear
┴ Toward Edge
f RV
⃦ ⃦ To Edge
f RV
Conc . Thickness Factor in Shear 3
f HV
Nominal Diameter mm M16 M20 M16 M20 M16 M20 M16 M20 M16 M20 M16 M20
Spacing ( s ) / Edge Distance ( c a
) / Concrete Thickness ( h ) - in . ( mm )
Effective Embed . h ef mm ( in )
100
125
100
125
100
125
100
125
100
125
100
125
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
( 3.94 )
( 4.92 )
4
( 102 )
0.67
n / a
0.76
n / a
0.55
n / a
0.17
n / a
0.33
n / a
n / a
n / a
5
( 127 )
0.71
0.67
0.88
n / a
0.56
0.55
0.23
n / a
0.47
n / a
n / a
n / a
5-7 / 8
( 149 )
0.75
0.70
1.00
0.84
0.57
0.56
0.30
0.23
0.59
0.46
n / a
n / a
6
( 152 )
0.75
0.70
1.00
0.86
0.58
0.56
0.31
0.24
0.61
0.47
n / a
n / a
7
( 178 )
0.80
0.74
1.00
0.96
0.59
0.57
0.39
0.30
0.77
0.60
n / a
n / a
7-7 / 8
( 200 )
0.83
0.77
1.00
1.00
0.60
0.58
0.46
0.36
0.92
0.71
0.63
n / a
8
( 203 )
0.84
0.77
1.00
1.00
0.60
0.59
0.47
0.36
0.94
0.73
0.64
n / a
9
( 229 )
0.88
0.80
1.00
1.00
0.61
0.60
0.56
0.43
1.00
0.87
0.67
n / a
9-1 / 2
( 241 )
0.90
0.82
1.00
1.00
0.62
0.60
0.61
0.47
1.00
0.94
0.69
n / a
9-7 / 8
( 251 )
0.92
0.83
1.00
0.62
0.60
0.65
0.50
1.00
0.71
0.65
10
( 254 )
0.92
0.84
1.00
0.63
0.61
0.66
0.51
1.00
0.71
0.65
11
( 279 )
0.97
0.87
1.00
0.64
0.62
0.76
0.59
1.00
0.75
0.68
11-7 / 8
( 302 )
1.00
0.90
1.00
0.65
0.63
0.85
0.66
1.00
0.77
0.71
12
( 305 )
0.91
0.65
0.63
0.87
0.67
0.78
0.71
13
( 330 )
0.94
0.66
0.64
0.98
0.75
0.81
0.74
14
( 356 )
0.97
0.68
0.65
1.00
0.84
0.84
0.77
15
( 381 )
1.00
0.69
0.66
0.94
0.87
0.80
16
( 406 )
0.70
0.67
1.00
0.90
0.82
18
( 457 )
0.73
0.69
0.95
0.87
20
( 508 )
0.75
0.71
1.00
0.92
24
( 610 )
0.80
0.76
1.00
30
( 762 )
0.88
0.82
36
( 914 )
0.95
0.88
> 48
( 1219 )
1.00
1.00
1 Linear interpolation not permitted . 2 Spacing factor reduction in shear , f AV , assumes an influence of a nearby edge . If no edge exists , then f AV
= f AN .
3 Concrete thickness reduction factor in shear , f HV , assumes an influence of a nearby edge . If no edge exists , then f HV
= 1.0 . 4 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 or CSA A23.3 Annex D .
— 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 of this section to calculate permissable edge distance and spacing combinations .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.3 HSL3-R HEAVY DUTY STAINLESS STEEL 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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