Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 43

Anchor Fastening Technical Guide , Edition 22
Figure 6
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 a min at s ≥
s min at c ≥
3.2.2
S min , 2
S min , 1
Concrete Edge
c design
edge distance c
Table 6 — Minimum edge distance , spacing , and concrete thickness for 3 / 8-in . diameter Hilti HIT-Z and HIT-Z-R rods 1
Nominal anchor diameter d in . 3 / 8
Effective embedment
h ef
( mm )
( 60 )
( 86 )
( 114 )
in .
2-3 / 8
3-3 / 8
4-1 / 2
Drilled hole condition - - 2 2 1 or 2 2 2 1 or 2 2 2 1 or 2 in . 4 4-5 / 8 5-3 / 4 4-5 / 8 5-5 / 8 6-3 / 8 5-3 / 4 6-3 / 4 7-3 / 8
Minimum concrete thickness h ( mm ) ( 102 ) ( 117 ) ( 146 ) ( 117 ) ( 143 ) ( 162 ) ( 146 ) ( 171 ) ( 187 )
Uncracked concrete
Cracked concrete
Minimum edge and spacing Case 1
Minimum edge and spacing Case 2
Minimum edge and spacing Case 1
Minimum edge and spacing Case 2
c min , 1
in .
( mm )
3-1 / 8
( 79 )
2-3 / 4
( 70 )
2-1 / 4
( 57 )
2-3 / 4
( 70 )
2-1 / 4
( 57 )
2
( 51 )
2-1 / 4
( 57 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
s min , 1
in .
( mm )
9-1 / 8
( 232 )
7-3 / 4
( 197 )
6-1 / 8
( 156 )
7-3 / 4
( 197 )
6-1 / 2
( 165 )
5-5 / 8
( 143 )
6-1 / 8
( 156 )
5-3 / 8
( 137 )
4-1 / 2
( 114 )
c min , 2
in .
( mm )
5-5 / 8
( 143 )
4-3 / 4
( 121 )
3-3 / 4
( 95 )
4-3 / 4
( 121 )
3-7 / 8
( 98 )
3-1 / 4
( 83 )
3-3 / 4
( 95 )
3-1 / 8
( 79 )
2-3 / 4
( 70 )
s min , 2
in .
( mm )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
c min , 1
in .
( mm )
2-1 / 8
( 54 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
s min , 1
in .
( mm )
6-3 / 8
( 162 )
5-1 / 2
( 140 )
4-1 / 4
( 108 )
5-1 / 2
( 140 )
3-1 / 2
( 89 )
2-5 / 8
( 67 )
3-1 / 4
( 83 )
2
( 51 )
1-7 / 8
( 48 )
c min , 2
in .
( mm )
3-5 / 8
( 92 )
3-1 / 8
( 79 )
2-3 / 8
( 60 )
3-1 / 8
( 79 )
2-1 / 2
( 64 )
2-1 / 8
( 54 )
2-3 / 8
( 60 )
2
( 51 )
1-7 / 8
( 48 )
s min , 2
in .
( mm )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
1-7 / 8
( 48 )
Table 7 — Minimum edge distance , spacing , and concrete thickness for 1 / 2-in . diameter Hilti HIT-Z and HIT-Z-R rods 1
Nominal anchor diameter d in . 1 / 2
Effective embedment
h ef
( mm )
( 70 )
( 114 )
( 152 )
in .
2-3 / 4
4-1 / 2
6
Drilled hole condition - - 2 2 1 or 2 2 2 1 or 2 2 2 1 or 2 in . 4 5 7-1 / 8 5-3 / 4 6-3 / 4 8-1 / 4 7-1 / 4 8-1 / 4 9-3 / 4
Minimum concrete thickness h
( mm ) ( 102 ) ( 127 ) ( 181 ) ( 146 ) ( 171 ) ( 210 ) ( 184 ) ( 210 ) ( 248 )
Uncracked Concrete
Cracked Concrete
Minimum edge and spacing Case 1
Minimum edge and spacing Case 2
Minimum edge and spacing Case 1
Minimum edge and spacing Case 2
c min , 1
in .
( mm )
5-1 / 8
( 130 )
4-1 / 8
( 105 )
2-7 / 8
( 73 )
3-5 / 8
( 92 )
3
( 76 )
2-1 / 2
( 64 )
2-7 / 8
( 73 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
s min , 1
in .
( mm )
14-7 / 8
( 378 )
11-7 / 8
( 302 )
8-5 / 8
( 219 )
10-1 / 4
( 260 )
9
( 229 )
7-1 / 4
( 184 )
8-1 / 8
( 206 )
7-1 / 4
( 184 )
5
( 127 )
c min , 2
in .
( mm )
9-1 / 4
( 235 )
7-1 / 4
( 184 )
4-7 / 8
( 124 )
6-1 / 4
( 159 )
5-1 / 4
( 133 )
4-1 / 8
( 105 )
4-3 / 4
( 121 )
4-1 / 8
( 105 )
3-3 / 8
( 86 )
s min , 2
in .
( mm )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
c min , 1
in .
( mm )
3-5 / 8
( 92 )
3
( 76 )
2-1 / 2
( 64 )
2-5 / 8
( 67 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
s min , 1
in .
( mm )
10-7 / 8
( 276 )
8-1 / 2
( 216 )
6
( 152 )
7-3 / 8
( 187 )
5-1 / 2
( 140 )
3-1 / 8
( 79 )
4-1 / 2
( 114 )
3-1 / 8
( 79 )
2-1 / 2
( 64 )
c min , 2
in .
( mm )
6-1 / 2
( 165 )
5
( 127 )
3-1 / 4
( 83 )
4-1 / 4
( 108 )
3-1 / 2
( 89 )
2-3 / 4
( 70 )
3-1 / 4
( 83 )
2-3 / 4
( 70 )
2-1 / 2
( 64 )
s min , 2
in .
( mm )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
2-1 / 2
( 64 )
1 Linear interpolation is permitted to establish an edge distance and spacing combination between Case 1 and Case 2 . Linear interpoloation for a specific edge distance c , where c min , 1
< c < c min , 2 , will determine the permissible spacing s as follows :
( s min , 1 – s min , 2
) s ≥ s min , 2
+ ____________ ( c – c min , 2 )
( c min , 1 – c min , 2
) 2 For shaded cells , drilling dust must be removed from drilled hole to justify minimum concrete thickness .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.2 HILTI HIT-HY 200 A / R V3 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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