1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
Interacting the concrete utilization in tension, perpendicular
shear and longitudinal shear of both channel will include the
effect of all of these breakout cones as described below.
&5"7"897
+
*
V )*,;
ϕ , V -&,;
:
+
*
V )*,4
ϕ , V -&,4
:
max
&
V %&,(
ϕ * V +,,(
,-"/"012
Figure 9.2.3.16.17— Obtuse FoS corner with anchor channels on both sides
—Example of determination of ψ s,v,a1 .
Tension: Refer Figure 9.2.4.1. This condition can be analyzed by
fictitious edge between c a2,b + c cr,N assigning side edge concrete
between channel a and b. The total distance of (a+b) can be
divided between the two channels, while analysing the individual
channels. For example if channel a is loaded more than channel
b than side edge distance of 3/4(a+b) can be assumed for
channel a and side edge distance 1/4(a+b) can be assumed for
channel b.
: Longitudinal shear of anchor
channel on obtuse edge (channel b)
• Longitudinal concrete edge failure Utilization
consideration ( channel a)
consideration ( channel a)
Figure 9.2.4.1 — 90° interior FoS corner with anchor channels on both sides.
Perpendicular shear: Refer Figure 9.2.4.2. This condition can
be analyzed by fictitious edge between c a2,b + c cr,V assigning side
edge concrete between channel a and b. The total distance of
(a+b) can be divided between the two channels, while analyzing
the individual channels. For example if channel a is loaded
more than channel b than side edge distance of 3/4(a+b) can be
assumed for channel a and side edge distance 1/4(a+b) can be
assumed for channel b.
Perpendicular shear: Refer Figure 9.2.4.4. This condition can
be analyzed by fictitious edge between c a2,b + c cr,V assigning side
edge concrete between channel a and b. The total distance of
(a+b) can be divided between the two channels, while analyzing
the individual channels. For example if channel a is loaded
more than channel b than side edge distance of 3/4(a+b) can be
assumed for channel a and side edge distance 1/4(a+b) can be
assumed for channel b.
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
231
230
An Imaginary edge is assumed while analyzing anchor channel
b. The side edge distance of C a2 is taken as shown in the figure
to the right figure 9.2.4.3 and figure 9.2.4.4. The concrete
shaded in dark color in these Figures is not neglected, while
analyzing anchor channel a or b.
Tension: Refer Figure 9.2.4.3. This condition can be analyzed by
fictitious edge between c a2,b + c cr,N assigning side edge concrete
between channel a and b. The total distance of (a+b) can be
divided between the two channels, while analyzing the individual
channels. For example if channel a is loaded more than channel
b than side edge distance of 3/4(a+b) can be assumed for
channel a and side edge distance 1/4(a+b) can be assumed for
channel b.
• Maximum Concrete edge breakout utilization for
Perpendicular shear
• Concrete edge (anchor)
• Anchor reinforcement for concrete edge failure
Acute Interior Corner:
The side edge distance with infinite amount of concrete to the
right of the anchor channel a is assumed while analyzing as
shown in the figure 9.2.4.3 and figure 9.2.4.4.
: : Perpendicular shear of anchor channel in
#
! "#,%
: : Longitudinal shear of anchor channel in
&'! (),%
Acute and obtuse interior corners
#
! "#,%
&'! (),%
Figure 9.2.4.2 — Acute angle interior FoS corner with anchor channels on
both sides — Perpendicular shear.
• Concrete breakout in tension utilization (anchor, including
influence of the other channels)
• Pull Out Strength Utilization
14. Design
Example
The side edge distance with infinite amount of concrete to the
right of the anchor channel a is assumed while analyzing as
shown in the figure 9.2.4.1 and figure 9.2.4.2.
≤ 1.0
#
! "#
: : Tension of anchor channel in consideration (channel a)
$%! &'
13. Field Fixes
:
12. Instructions
for Use
An Imaginary edge is assumed while analyzing anchor channel
b. The side edge distance of C a2,a is taken as shown in figure
9.2.4.1 and Figure 9.2.4.2.
with α=1.67
*
V )*,4
ϕ , V -&,4
11. Best
Practices
90° Inside Corner
3D Load Interaction for Front of Slab solutions (verification for
every anchor):
+ max
10. Design
Software
Inside corners where two anchor channels are present and are
loaded simultaneously are outside the scope of AC232. Most of
the AC232 provisions can be applied to this type of application.
However, the influence of the adjacent anchor channel should
be considered, as the concrete strength may be negatively
impacted.
Interaction Equation:
9. Special Anchor
Channel Design
Concrete breakout longitudinal shear check for channel a and
b, the true side edge is considered for analysis with no added
corner reduction factor to the capacity.
*
N )*
ϕ , N -&
8. Reinforcing
Bar Anchorage
9.2.4 — HAC AND HAC-T DESIGN: FACE OF SLAB INSIDE CORNER
WITH PAIR OF ANCHOR CHANNEL
Longitudinal shear:
β "#$,& =
7. Anchor Channel
Design Code