1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
HAC CRFoS U in intermediate applications
2.2.7 HAC EDGE LITE, HAC EDGE, AND HAC S EDGE
Hilti Anchor Channels with smooth channel lips and rebar
edge confinement plate (HAC EDGE Lite and HAC EDGE) are
offered in HAC-40 (HAC EDGE Lite only) and HAC-50 profiles.
HAC EDGE with superior steel performance (HAC S EDGE) are
offered in HAC-50 profiles. The anchor channel is identical to
its matching HAC, except the rebar edge confinement plate
(EDGE Lite or EDGE Plate) is incorporated for superior concrete
performance in shear.
HBC-C-N
HAC-40
HAC EDGE Lite
HAC-50
The standard portfolio consists of HAC-40 with a nominal
anchor height of 3.70" (94.00 mm) and HAC-50 with two defined
nominal anchor heights; 4.31” (109.50 mm) and 3.84” (97.50
mm). Moreover, defined channel length, EDGE Lite and EDGE
Plate geometry, rebar lengths, anchor and rebar diameter, and
number of rebar are also defined. The number of anchors per
channels is pre-defined and may be modified and ordered upon
request. Refer to section 2.4 and 2.5 for additional information
about standard items and lead times. For custom solutions,
refer to section 2.6.
HBC-C
HAC EDGE Lite
HAC EDGE
HAC S EDGE
Figure 2.2.7.1 — HAC EDGE Lite, HAC EDGE, and HAC S EDGE profiles with
matching bolts
The concrete edge shear confinement plate (EDGE Plate) is
fixed to the form work or pour stop. The EDGE Plate comes with
installation holes. As an added value, the product comes with
the specified edge distance (c a1 ).
HAC EDGE Lite and HAC EDGE
Figure 2.2.6.2 — HAC CRFoS U in bottom of slab application, section view.
These anchor channel systems consist of HAC and the new rebar edge confinement plate (EDGE plate). The EDGE plate is not
structurally attached to the anchor channel. This allows to decouple the tension and shear forces. The HAC-50 EDGE C comes with
an offset rebar and increased height of the front plate.
Another example is a kicker in a spandrel beam (corner or
intermediate) where the anchor is installed at a large edge
distance but the bracket eccentricity generates overly high
tension forces on the t-bolts.
14. Design
Example
A good example for a top of "slab" applications where HAC
CRFoS U may be the only solution is handrails in top of curb.
Although the shear forces are typically low, the high tension
forces on the t-bolts due to the cantilever effect of the rails
tends to create unsatisfactory concrete breakout in tension
utilizations. Figure 2.2.6.1 illustrates such scenario. The
curb needs to be tall enough to meet the minimum member
thickness. Standard hooks and headed rebars may be used if
the minimum member thickness is not met.
13. Field Fixes
HAC CRFoS U in top or bottom of slab
applications
12. Instructions
for Use
The requirements for HAC CRFoS U in top of slab applications
are similar to the HAC requirements discussed in section 2.2.3.
See section 9 for additional design information.
11. Best
Practices
HAC CRFoS U in corner applications
10. Design
Software
In bottom of slab applications, the concrete breakout strength
in shear can be increased by increasing the edge distance.
However, if the tension is too high as it can be the case with
kicker, the interaction (or tension alone) of concrete in tension
and shear can yield unsatisfactory utilizations. HAC CRFoS U
can solve this limitation, if the member thickness is sufficient.
9. Special Anchor
Channel Design
The use of HAC CRFoS U is not limited to face of slab
applications. HAC CRFoS U is ideal for applications with high
tension forces. In top of slab applications, HAC CRFoS U
presents a great solution for applications (intermediate and
corners) with high tension forces and HAC is not adequate. The
minimum member thickness, corner and edge distances are
provided in tables 2.2.5.1 and 2.2.5.2. The minimum rebar length
should be established in accordance with applicable provisions
of AC232 and ACI 318.
The concrete breakout strength in shear is not negatively
impacted by the rebars. The concrete breakout strength in shear
for HAC and its matching HAC CRFoS U is asssumed to be
equal and the same design standards are applied.
8. Reinforcing
Bar Anchorage
2.2.6 H
AC CRFoS U IN TOP OR BOTTOM OF SLAB APPLICATIONS
7. Anchor Channel
Design Code
HAC
EDGE Lite Plate
or
EDGE Plate
Fixture and self-
drilling screws
HAC CRFoS U transfers higher tension forces than HAC. HAC
CRFoS U does not increase the concrete breakout strength in
shear. See section 9 for additional design information.
HAC EDGE Lite
or
HAC EDGE
HAC S EDGE
This anchor channel is equal to its matching HAC EDGE, except the "S" bracket is added. The "S" bracket offers superior steel
performance. The S bracket is structurally attached to the anchor channel. The S-bracket has a similar geometry to the connected
channel profile to ensure direct bearing of the S bracket on the channel profile.
54
HAC
S bracket
(superior steel
performance)
EDGE Plate
Fixture and self-drilling
screws, and nuts
HAC S EDGE
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
55
Figure 2.2.6.1 — Pair of HAC CRFoS U in a top of curb corner, isometric
view.