HAC_Technical-Guide

218 219
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material 6. Loading
7. Anchor Channel
Design Code
8. Reinforcing
Bar Anchorage
9. Special Anchor
Channel Design
10. Design
Software
11. Best
Practices
12. Instructions
for Use
13. Field Fixes
14. Design
Example
9.1 Overview of Hilti Anchor Channel Systems Design
9.2 HAC and HAC-T Design 9.3 HAC CRFoS U Design 9.4 & 9.5 Post Tensioned Slabs 9.6 HAC EDGE Design
Superposition of tension and shear loads
(up to 5 interaction equations)
9.2 — HAC AND HAC-T
DESIGN
The general design of HAC and HAC-T is based on ICC ESR-
3520. The design theory of rounded headed anchors is
presented in chapter 7. This section provides additional design
information for applications outside the scope of AC232 and
therefore ESR-3520 such as corners and parallel channels.
The anchor channel design encompasses the verification of
the steel and concrete at the anchorage zone. For conditions
outside the scope of AC232, it is only the concrete failure mode
that are excluded. The steel strengths of the anchor channel do
not depend on the concrete and therefore, the steel strengths of
HAC and HAC-T are based on ESR-3520.
This section provides guidelines to determine the concrete
strengths of anchor channels for applications outside the scope
of AC232. The design methodology of such applications is
based on applicable provisions and principles of AC232. Table
9.2.1 summarizes the design methodology for each potential
failure mode of HAC and HAC-T for intermediate, corners, and
parallel anchor channels applications.
Tension (ΦN
n
) Shear (ΦV
n,y
) Shear (ΦV
n,x
)
Steel Concrete Steel Concrete Steel Concrete
Table 9.2.1 — Design methodology for all potential failure modes of HAC and HAC-T for common applications
Tension design model
Failure mode Symbol
HAC & HAC-T
Intermediate Corners Parallel channels
Anchor ΦN
sa
ESR-3520 ESR-3520 ESR-3520
Anchor and channel connection ΦN
sc
ESR-3520 ESR-3520 ESR-3520
Channel lip ΦN
sl
ESR-3520 ESR-3520 ESR-3520
Bending of channel ΦM
s,flex
ESR-3520 ESR-3520 ESR-3520
Channel bolt ΦN
ss
ESR-3520 ESR-3520 ESR-3520
Pullout ΦN
pn
ESR-3520 ESR-3520 ESR-3520
Side-face blowout ΦN
sb
ESR-3520 ESR-3520 ESR-3520
Concrete breakout ΦN
cb
ESR-3520 AC232 principles AC232 principles
Tension design model
Failure mode Symbol
HAC & HAC-T
Intermediate Corners Parallel channels
Channel lip ΦV
sl,y
ESR-3520 ESR-3520 ESR-3520
Anchor ΦV
sa,y
ESR-3520 ESR-3520 ESR-3520
Anchor and channel connection ΦV
sc,y
ESR-3520 ESR-3520 ESR-3520
Channel bolt ΦV
ss
ESR-3520 ESR-3520 ESR-3520
Channel bolt ΦV
ss,M
ESR-3520 ESR-3520 ESR-3520
Concrete edge breakout ΦV
cb,y
ESR-3520 AC232 principles
AC232 and ACI 318
principles
Pryout ΦV
cp,y
ESR-3520 AC232 principles AC232 principles
Tension design model
Failure mode Symbol
HAC & HAC-T
Intermediate Corners Parallel channels
Anchor ΦV
sa,x
ESR-3520 ESR-3520 ESR-3520
Anchor and channel connection ΦV
sc,x
ESR-3520 ESR-3520 ESR-3520
Channel bolt and channel connection ΦV
sl,x
ESR-3520 ESR-3520 ESR-3520
Channel bolt ΦV
ss
ESR-3520 ESR-3520 ESR-3520
Channel bolt ΦV
ss,M
ESR-3520 ESR-3520 ESR-3520
Concrete edge breakout ΦV
cb,x
ESR-3520 AC232 principles AC232 and ACI principles
Pryout ΦV
cp,x
ESR-3520 AC232 principles AC232 principles
1 1AC232 based indicates product has been tested in accordance to AC232 testing protocols for that specific failure mode and the design is based on applicable provisions and/or
fundamentals of AC232 and/or ACI 318.
2 AC232 and ACI 318 based indicates the analysis of that specific failure modes is in accordance to the applicable ACI 318 provision.
IMPORTANT! Failure analysis modes evaluated follow ACI 318-14,
chapter 17. This DOES NOT include evaluating the base material (e.g.
edge-of-slab) capacity to resist compressive forces generated by
the fixture. The engineer must ALWAYS verify the base material (e.g.
edge-of-slab) design is capable of resisting the applied loading.
For additional information, please contact Hilti at [e-mail]