ACI-349 Approval for KB-TZ2 Expansion Anchor

Applicability of the KB-TZ2 Anchor
8
August 2021
Appendix A
Design information for the Hilti Kwik Bolt TZ2 Expansion Anchor in Accordance with ACI 349-01
Appendix B.
1.0 – SCOPE
This guide is intended to provide guidance on the design of anchorages using the Hilti Kwik Bolt TZ2 (KB-TZ2) in accordance
with ACI 349-01 Appendix B. Note this design varies from current general industry practice following ACI 318 Chapter 17. It is the
responsibility of the engineer of record to verify the accuracy and suitability of all design calculations, methodologies, capacities
and code compliance. Information contained in this document was current as of August 1, 2021, and subject to change. Updates
and changes may be made based on future testing. If verification is needed that the data is still current, please contact Hilti
Technical Services at 1-877-749-6337.
2.0 – USES
The Hilti Kwik Bolt TZ2 expansion anchor is used to resist static, wind, and seismic tension and shear loads in cracked and
uncracked normal-weight concrete having a specified compressive strength 2,500 psi ≤ f ′c ≤ 8,500 psi (17.2 MPa ≤ f ′c ≤ 58.6 MPa).
The values of f ′c used for calculations in this guide shall not exceed 8000 psi (55.2 MPa).
3.0 – INSTALLATION
Installation shall be in accordance with Hilti’s printed installation instructions as included in the anchor packaging.
4.0 – DESIGN
The design shall be in accordance with this document and ACI 349-01 Appendix B.
Figure 1 — Hilti carbon steel KWIK BOLT TZ (KB-TZ2)
mandrel
collar
washer
bolt
expansion element
UNC thread
dog point
hex nut
Figure 2 — Hilti KB-TZ2 installed