Table 20 — Hilti Stainless Steel KB-TZ2 design strength based on steel failure per ACI 318 Ch . 17 1 , 2
Nominal anchor diameter in .
1 / 4
3 / 8
3 / 8
1 / 2
5 / 8
3 / 4
1 ( 25.4 )
1 ( 25.4 )
Effective embedment depth in . ( mm )
Tensile 3
ФN sa lb ( kN )
Shear 4
ФV sa lb ( kN )
Seismic Shear 5
ФV sa lb ( kN )
1-1 / 2 2,190 950 720 ( 38 ) ( 9.7 ) ( 4.2 ) ( 3.2 ) 1-1 / 2 4,635 3,000 3,000 ( 38 ) ( 20.6 ) ( 13.3 ) ( 13.3 ) 2 2-1 / 2 4,635 3,175 3,175 ( 51 ) ( 64 ) ( 20.6 ) ( 14.1 ) ( 14.1 ) 2 2-1 / 2 3-1 / 4 8,905 5,425 5,425 ( 51 ) ( 64 ) ( 83 ) ( 39.6 ) ( 24.1 ) ( 24.1 ) 2-3 / 4 3-1 / 4 4 14,125 8,030 8,030 ( 70 ) ( 83 ) ( 102 ) ( 62.8 ) ( 35.7 ) ( 35.7 ) 3-1 / 4 3-3 / 4 4-3 / 4 18,035 10,765 8,755 ( 83 ) ( 95 ) ( 121 ) ( 80.2 ) ( 47.9 ) ( 38.9 )
4 35,215 14,920 8,755 ( 102 ) ( 156.6 ) ( 66.4 ) ( 38.9 ) 5-3 / 4 35,215 20,410 8,755 ( 146 ) ( 156.6 ) ( 90.8 ) ( 38.9 )
1 See Section 3.1.8 to convert design strength value to ASD value . 2 Hilti KB-TZ2 stainless steel anchors are to be considered ductile steel elements . 3 Tensile фN sa
= ф A se , N f uta as noted in ACI 318 Ch . 17 . 4 Shear values determined by static shear tests with фV sa
< ф 0.60 A se , V f uta as noted in ACI 318 Ch . 17 .
5 Seismic shear values determined by seismic shear tests with фV sa ≤ ф 0.60 A se , V f uta as noted in ACI 318 Ch . 17 .
See Section 3.1.8 for additional information on seismic applications .
Figure 3 s min , 2 s min , 1
Anchors not permitted in shaded area c min , 1 c min , 2
Case 2
Case 1
Concrete Edge
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 c designedge distance c
Table 21 — Hilti KB-TZ2 stainless steel installation parameters 1
Setting information Symbol Units
Effective embedment
Min . member thickness
Case 1
Case 2
Nominal Anchor diameter ( in .) 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 1
h ef
|
( mm ) |
( 38 ) |
( 38 ) |
( 51 ) |
( 64 ) |
( 51 ) |
( 64 ) |
( 83 ) |
( 70 ) |
( 83 ) |
( 102 ) |
( 83 ) |
( 95 ) |
( 121 ) |
( 102 ) |
( 146 ) |
|
in . |
1-1 / 2 |
1-1 / 2 |
2 |
2-1 / 2 |
2 |
2-1 / 2 |
3 1 / 4 |
2-3 / 4 |
3-1 / 4 |
4 |
3-1 / 4 |
3-3 / 4 |
4-3 / 4 |
4 |
5-3 / 4 |
h min
|
( mm ) |
( 83 ) |
( 83 ) |
( 102 ) |
( 127 ) |
( 102 ) |
( 127 ) |
( 140 ) |
( 127 ) |
( 140 ) |
( 152 ) |
( 140 ) |
( 152 ) |
( 203 ) |
( 203 ) |
( 254 ) |
|
in . |
3-1 / 4 |
3-1 / 4 |
4 |
5 |
4 |
5 |
5-1 / 2 |
5 |
5-1 / 2 |
6 |
5-1 / 2 |
6 |
8 |
8 |
10 |
c min , 1
|
( mm ) |
( 38 ) |
( 127 ) |
( 64 ) |
( 64 ) |
( 70 ) |
( 64 ) |
( 57 ) |
( 102 ) |
( 83 ) |
( 57 ) |
( 127 ) |
( 102 ) |
( 95 ) |
( 95 ) |
( 76 ) |
|
in . |
1-1 / 2 |
5 |
2-1 / 2 |
2-1 / 2 |
2-3 / 4 |
2-1 / 2 |
2-1 / 4 |
4 |
3-1 / 4 |
2-1 / 4 |
5 |
4 |
3 3 / 4 |
3-3 / 4 |
3 |
for
s min , 1
≥ in . 1-1 / 2 8 5 5 5-1 / 2 4-1 / 2 5-1 / 4 7 5-1 / 2 7 11 7-1 / 2 5 3 / 4 10 6-3 / 4 ( mm ) ( 38 ) ( 203 ) ( 127 ) ( 127 ) ( 140 ) ( 114 ) ( 133 ) ( 178 ) ( 140 ) ( 178 ) ( 279 ) ( 191 ) ( 146 ) ( 254 ) ( 171 )
c min , 2
|
( mm ) |
( 38 ) |
( 203 ) |
( 102 ) |
( 89 ) |
( 105 ) |
( 114 ) |
( 114 ) |
( 140 ) |
( 102 ) |
( 108 ) |
( 203 ) |
( 152 ) |
( 133 ) |
( 108 ) |
( 95 ) |
|
in . |
1-1 / 2 |
8 |
4 |
3-1 / 2 |
4-1 / 8 |
4-1 / 2 |
4-1 / 2 |
5-1 / 2 |
4 |
4-1 / 4 |
8 |
6 |
5-1 / 4 |
4-1 / 4 |
3-3 / 4 |
for
s min , 2
≥ in . 1-1 / 2 5 2-1 / 4 2-1 / 4 2-3 / 4 2-1 / 2 2 5-1 / 2 2-3 / 4 3 5 4 4 5 4-3 / 4 ( mm ) ( 38 ) ( 127 ) ( 57 ) ( 57 ) ( 70 ) ( 64 ) ( 51 ) ( 140 ) ( 70 ) ( 76 ) ( 127 ) ( 102 ) ( 102 ) ( 127 ) ( 121 )
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 .
310 Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.5 KWIK BOLT TZ2 EXPANSION 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