Table 4 — Hilti Carbon 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
1 / 2
5 / 8
3 / 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 2,190 875 875 ( 38 ) ( 9.7 ) ( 3.9 ) ( 3.9 ) 1-1 / 2 4,870 2,095 2,095 ( 38 ) ( 21.7 ) ( 9.3 ) ( 9.3 ) 2 2-1 / 2 4,870 2,200 2,200 ( 51 ) ( 64 ) ( 21.7 ) ( 9.8 ) ( 9.8 ) 1-1 / 2 2 8,430 3,600 3,600 ( 38 ) ( 51 ) ( 37.5 ) ( 16.0 ) ( 16.0 ) 2-1 / 2 3-1 / 4 8,430 4,470 4,470 ( 64 ) ( 83 ) ( 37.5 ) ( 19.9 ) ( 19.9 ) 2-3 / 4 3-1 / 4 4 13,150 6,665 6,665 ( 70 ) ( 83 ) ( 102 ) ( 58.5 ) ( 29.6 ) ( 29.6 ) 3-1 / 4 3-3 / 4 4-3 / 4 19,000 8,975 8,975 ( 83 ) ( 95 ) ( 121 ) ( 84.5 ) ( 39.9 ) ( 39.9 )
1 4 31,025 12,215 8,975 ( 25.4 ) ( 102 ) ( 138.0 ) ( 54.3 ) ( 39.9 )
1 5-3 / 4 31,025 14,875 8,975 ( 25.4 ) ( 146 ) ( 138.0 ) ( 66.2 ) ( 39.9 )
1 See Section 3.1.8 to convert design strength value to ASD value . 2 Hilti KB-TZ2 carbon 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 2 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 5 — Hilti KB-TZ2 carbon steel installation parameters 1
Setting information |
Symbol |
Units |
Nominal Anchor diameter ( in .)
1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 1
|
Effective embedment
Min . member thickness
Case 1
Case 2
h |
in . |
1-1 / 2 |
1-1 / 2 |
2 |
2-1 / 2 |
1-1 / 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 |
ef |
( mm ) |
( 38 ) |
( 38 ) |
( 51 ) |
( 64 ) |
( 38 ) |
( 51 ) |
( 64 ) |
( 83 ) |
( 70 ) |
( 83 ) |
( 102 ) |
( 83 ) |
( 95 ) |
( 121 ) |
( 102 ) |
( 146 ) |
h |
in . |
3-1 / 4 |
3-1 / 4 |
4 |
5 |
3-1 / 2 |
4 |
5 |
5-1 / 2 |
5 |
5-1 / 2 |
6 |
5-1 / 2 |
6 |
8 |
8 |
10 |
min |
( mm ) |
( 83 ) |
( 83 ) |
( 102 ) |
( 127 ) |
( 89 ) |
( 102 ) |
( 127 ) |
( 140 ) |
( 127 ) |
( 140 ) |
( 152 ) |
( 140 ) |
( 152 ) |
( 203 ) |
( 203 ) |
( 254 ) |
c |
in . |
1-1 / 2 |
5 |
2-1 / 2 |
2-1 / 2 |
8 |
2-3 / 4 |
2-3 / 4 |
2-1 / 4 |
4-1 / 2 |
3-1 / 2 |
2-3 / 4 |
5 |
4 |
3-1 / 2 |
8 |
3 |
min , 1 |
( mm ) |
( 38 ) |
( 127 ) |
( 64 ) |
( 64 ) |
( 203 ) |
( 70 ) |
( 70 ) |
( 57 ) |
( 114 ) |
( 89 ) |
( 70 ) |
( 127 ) |
( 102 ) |
( 89 ) |
( 203 ) |
( 76 ) |
for
s min , 1
≥ in . 1-1 / 2 8 6 5 12 5-1 / 2 9-3 / 4 5-1 / 4 6-1 / 2 5-1 / 2 7-1 / 4 10 5-3 / 4 5-1 / 2 8 6-3 / 4 ( mm ) ( 38 ) ( 203 ) ( 152 ) ( 127 ) ( 305 ) ( 140 ) ( 248 ) ( 133 ) ( 165 ) ( 140 ) ( 184 ) ( 254 ) ( 146 ) ( 140 ) ( 203 ) ( 171 )
c |
in . |
1-1 / 2 |
8 |
3-1 / 2 |
4 |
8 |
10 |
8 |
4-3 / 4 |
5-1 / 2 |
7 |
4-1 / 4 |
6 |
7-1 / 4 |
4-3 / 4 |
8 |
3-3 / 4 |
min , 2 |
( mm ) |
( 38 ) |
( 203 ) |
( 89 ) |
( 102 ) |
( 203 ) |
( 254 ) |
( 203 ) |
( 121 ) |
( 140 ) |
( 178 ) |
( 108 ) |
( 152 ) |
( 184 ) |
( 121 ) |
( 203 ) |
( 95 ) |
for
s min , 2
≥ in . 1-1 / 2 5 2-1 / 4 2 12 3-1 / 2 3 2 4-1 / 2 2-3 / 4 2-1 / 4 4-1 / 2 3-3 / 4 3-3 / 4 8 4-3 / 4 ( 38 ) ( 127 ) ( 57 ) ( 51 ) ( 305 ) ( 89 ) ( 76 ) ( 51 ) ( 114 ) ( 70 ) ( 57 ) ( 114 ) ( 95 ) ( 95 ) ( 203 ) ( 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 .
302 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