Table 6. Hilti KB1 design strength based on steel failure per ACI 318 Ch. 17 1
Nominal anchor diameter in. |
Tensile 2 ϕN sa lb( kN) |
Shear 3 ϕV sa lb( kN) |
Seismic Shear 4 ϕV sa lb( kN) |
3 / 8 |
4,760( 21.2) |
1,170( 5.2) |
1,170( 5.2) |
1 / 2 |
8,145( 36.2) |
1,970( 8.8) |
1,970( 8.8) |
5 / 8 |
12,875( 57.3) |
3,460( 15.4) |
3,460( 15.4) |
3 / 4 |
18,220( 81.0) |
4,985( 22.2) |
4,985( 22.2) |
3 / 4x12 1 15,790( 70.2)
1 Hilti KB1 anchors are to be considered ductile steel elements with the exception of the 3 / 4 x 12 KB1, which is a brittle steel element.
4,600( 20.5)
4,600( 20.5)
2 Tensile ϕN sa = ϕ A se, N f uta as noted in ACI 318 Ch. 17. 3 Shear values determined by static shear tests with ϕV sa < ϕ 0.60 A se, V f uta as noted in ACI 318 Ch. 17. 4 Seismic shear values determined by seismic shear tests with ϕV sa ≤ ϕ 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.
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