Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 417

Figure 4
Anchors not permitted in shaded area
c min , 1 c min , 2
Case 2
Case 1
For a specific edge distance , the permitted spacing is calculated as follows :
( s min , 1 – s min , 2
) s ≥ s min , 2
+ ___________ ( c – c min , 2 )
( c min , 1 – c min , 2
)
spacing s
s design
c min , 1 at s min , 1
c min , 2 at s min , 2
s min , 2 s min , 1
Concrete Edge c designedge distance c
Table 14 — Hot-dip galvanized KWIK Bolt 3 installation parameters 1
Setting information Symbol Units
Nominal anchor diameter d o
1 / 2
5 / 8
3 / 4
in . 2 3-1 / 4 3-1 / 8 4 3-3 / 4 5
Effective minimum embedment h ef ( mm ) ( 51 ) ( 83 ) ( 79 ) ( 102 ) ( 95 ) ( 127 ) in . 4 6 6 8 5 6 8 6 8 8
Minimum member thickness h min
( mm ) ( 102 ) ( 152 ) ( 152 ) ( 203 ) ( 127 ) ( 152 ) ( 203 ) ( 152 ) ( 203 ) ( 203 ) in . 3-1 / 4 2-5 / 8 2 2-1 / 4 2 1-78 3-1 / 2 3-5 / 8 c min , 1
( mm ) ( 83 ) ( 67 ) ( 51 ) ( 57 ) ( 51 ) ( 48 ) ( 89 ) ( 92 )
Case 1
Case 2 for s min , 1 ≥
in .
6-1 / 4
5-1 / 2
4-7 / 8
5-1 / 4
5
4-3 / 4
7-1 / 2
7-3 / 8
( mm )
( 158 )
( 140 )
( 124 )
( 133 )
( 127 )
( 121 )
( 191 )
( 187 )
c min , 2 in . 3-3 / 4 2-3 / 4 2-5 / 8 2-1 / 4 3-1 / 2 2-1 / 2 2-1 / 4 6-1 / 2 4-3 / 4 ( mm ) ( 95 ) ( 70 ) ( 67 ) ( 57 ) ( 89 ) ( 64 ) ( 57 ) ( 165 ) ( 121 ) for s min , 2 ≥
1 Linear interpolation is permitted to establish an edge distance and spacing combination between Case 1 and Case 2 . Linear interpolation for a specific edge . distance c , where c min , 1
< c < c min , 2 will determine the permissible spacings .
in .
3-1 / 8
2-3 / 4
2-3 / 8
2-1 / 8
2-1 / 2
2-1 / 8
2-1 / 8
4
3-7 / 8
( mm )
( 79 )
( 70 )
( 60 )
( 54 )
( 64 )
( 54 )
( 54 )
( 102 )
( 98 )
Table 15 — Load adjustment factors for 1 / 2-in . diameter Hilti KWIK Bolt 3 hot-dip galvanized anchor in uncracked concrete 1 , 2
1 / 2-in . KB3 hot-dip galvanized uncracked concrete spacing factor in tension
ƒ AN edge distance factor in tension
ƒ RN spacing factor in shear 3
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.11 KWIK Bolt 3 ( KB 3 ) CARBON AND STAINLESS STEEL SCREW 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
ƒ AV
Edge distance in shear
⊥ toward edge
ƒ RV
II to and away from edge
ƒ RV
Conc . thickness factor in shear 4
Embedment
in .
2-1 / 4
3-1 / 2
2-1 / 4
3-1 / 2
2-1 / 4
3-1 / 2
2-1 / 4
3-1 / 2
2-1 / 4
3-1 / 2
2-1 / 4
3-1 / 2
h nom
( mm )
( 57 )
( 89 )
( 57 )
( 89 )
( 57 )
( 89 )
( 57 )
( 89 )
( 57 )
( 89 )
( 57 )
( 89 )
Spacing ( s ) / edge distance ( c a
) / concrete thickness ( h ) - in . ( mm )
2
( 51 )
n / a
n / a
n / a
0.38
n / a
n / a
n / a
0.10
n / a
0.20
n / a
n / a
2-3 / 8
( 60 )
n / a
0.62
n / a
0.41
n / a
0.54
n / a
0.13
n / a
0.26
n / a
n / a
2-1 / 2
( 64 )
n / a
0.63
n / a
0.42
n / a
0.55
n / a
0.14
n / a
0.28
n / a
n / a
3
( 76 )
n / a
0.65
n / a
0.46
n / a
0.55
n / a
0.19
n / a
0.37
n / a
n / a
3-1 / 8
( 79 )
0.76
0.66
n / a
0.48
0.64
0.56
n / a
0.20
n / a
0.40
n / a
n / a
3-1 / 4
( 83 )
0.77
0.67
0.67
0.49
0.64
0.56
0.79
0.21
0.79
0.42
n / a
n / a
3-1 / 2
( 89 )
0.79
0.68
0.72
0.51
0.65
0.56
0.88
0.23
0.88
0.47
n / a
n / a
4
( 102 )
0.83
0.71
0.82
0.56
0.68
0.57
1.00
0.29
1.00
0.56
0.84
n / a
4-1 / 2
( 114 )
0.88
0.73
0.92
0.61
0.70
0.58
0.34
0.61
0.89
n / a
5
( 127 )
0.92
0.76
1.00
0.67
0.72
0.59
0.40
0.67
0.94
n / a
6
( 152 )
1.00
0.81
0.80
0.76
0.61
0.53
0.80
1.00
0.66
7
( 178 )
1.00
0.86
0.93
0.81
0.63
0.66
0.93
0.71
8
( 203 )
0.91
1.00
0.85
0.64
0.81
1.00
0.76
9
( 229 )
0.96
0.89
0.66
0.97
0.81
10
( 254 )
1.00
0.94
0.68
1.00
0.85
11
( 279 )
0.98
0.70
0.89
12
( 305 )
1.00
0.72
0.93
14
( 356 )
0.75
1.00
16
( 406 )
0.79
18
( 457 )
0.83
20
( 508 )
0.86
> 24
( 610 )
0.93
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 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 , this indicates that this specific edge distance may not be permitted with a certain spacing ( or vice versa ). Check with table 22 and figure 4 of this section to calculate permissable edge distance , spacing and concrete thickness combinations . Use of Hilti KWIK Bolt 3 anchors with edge distance and spacing dimensions smaller than what is noted in this table is permitted . ƒ HV
413
3.3.11