HAC_Technical-Guide

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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
Longitudinal Shear
Steel Failure Modes Concrete Failure Modes
Channel bolt:
ΦV
ss
Channel Lip
ΦV
sl,y
connection :
ΦV
sc,R,y
Rebar
ΦV
s,R,y
Concrete
Breakout
Φ
Vcb,y
Concrete Pryout
ESR-3520
Sec. 4.1.3.3.2,
4.1.3.4.2
ESR-3520
Sec. 4.1.3.3.2,
4.1.3.4.2
Hilti Method
based on AC232
testing guidelines
Hilti Method
based on AC232
testing guidelines
ESR-3520
Sec. 4.1.3.4.3 N/A
Rebar strength: ΦV
s,R,x
ΦV
s,R,x
> V
a
ua
The tests follow AC232 testing
guidelines. Refer to anchor channel
theory for further clarification. Please
refer table 2.3.4.3 for strength values.
Rebar: ΦV
s,R,x
Connection Anchor and Channel : ΦV
sc,R,x
ΦV
sc,R,x
> V
a
ua
The tests follow AC232 testing
guidelines. Refer to anchor channel
theory for further clarification. Please
refer to table 2.3.4.3 for strength
values.
Anchor and Channel
Connection: ΦV
sc,R,x
Concrete breakout in perpendicular shear: ΦV
cb,x
ΦV
cb,x
> V
a
ua
Please refer to anchor channel theory
for more information on this failure
mode. The design methodology is the
same as that of headed stud anchor
channel. This check is compliant with
ESR 3520.
Concrete edge breakout:
ΦVcb,x
9.3.1 — HAC CRFOS U DESIGN: INTERMEDIATE FACE OF SLAB
ANCHOR CHANNEL
Cast-in anchor channels with rebar anchors for face of slab
applications
The overall design of HAC CRFoS U follows the principles
described in chapter 7 with some modifications to the
verification of some failure modes. Table 9.3.1.1, 9.3.1.2, 9.3.1.3,
Figures 9.3.1.1 and 9.3.1.2 illustrate the main differences in the
possible failures modes of HAC and HAC CRFoS U.
Concrete breakout in tension and pry-out failure modes were
not observed in testing, and therefore, they are excluded from
the possible failure modes of HAC CRFoS U. The verification
of the adequacy of the pull-out strength of the rebar anchors is
based on ACI 318. The design ensures the applied rebar forces
do not exceed the bond stresses between the rebar and the
concrete.
Figure 9.3.1.2 — Cast-in anchor channel with reinforcing bar anchors (HAC CRFoS U) loaded in tension.
Figure 9.3.1.1 — Cast-in anchor channel with rounded stud anchors (HAC) loaded in tension.