1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
90 Degree Corner
Tension breakout cone formation is
precluded because of having rebars
instead of headed studs. Therefore to
determine the available concrete for
the analysis depends on formation of
projected areas due to the concrete
breakout cone in shear.
Please refer to the Figure 9.3.2.1.
Figure 9.3.2.1 — HAC CRFOS U — Single anchor channel — 90 degree Corner.
9. Special Anchor
Channel Design
10. Design
Software
11. Best
Practices
12. Instructions
for Use
13. Field Fixes
14. Design
Example
Obtuse Angle Corner
Shear: Obtuse angle corners have a
greater amount of concrete than in 90
degree corners. The determination of
c a2 dimension for perpendicular shear
analysis is conservatively assumed as
shown in Figure 9.3.2.4. Please refer to
Figure 9.3.2.4 covering the perpendicular
shear analysis at obtuse degree corner.
Please refer section 9.2.2 for analysis of
anchor channel subjected to longitudinal
shear for obtuse angle corner with single
anchor channel on face of slab.
Tension: For Tension analysis refer
section 9.3.1 pull out in tension. There
will not be the concrete breakout cone
development in tension. The cb concrete
cover is taken as minimum of the four s/2,
c b1 , c b2 and c b3 dimensions.(s=spacing
between rebars). Refer Figure 9.3.2.4 and
Figure 9.3.2.5.
The effect of the reduced side edge
distance can also effect the pullout
strength of rebar if the cover is so small
that it yields the c b /d b value less than 2.5.
The value of c b is equal to c a2 .
8. Reinforcing
Bar Anchorage
9.3.2 — H
AC CRFOS U DESIGN: FACE OF SLAB OUTSIDE CORNER
WITH A SINGLE ANCHOR CHANNEL
7. Anchor Channel
Design Code
Figure 9.3.2.4 — HAC CRFOS U — Single anchor channel — Obtuse angle Corner — Plan View.
Acute Angle Corner
Figure 9.3.2.5 — HAC CRFOS U — Single anchor channel — Obtuse angle Corner — Section View.
Figure 9.3.2.2 — HAC CRFOS U — Single anchor channel — Acute angle Corner — Plan View.
Shear: To determine the c a2 dimension
while analyzing a acute corner, it is
recommended to draw the projected
area in perpendicular shear as shown in
Figure 9.3.2.2. The darkened portion of
the concrete is not utilized in the analysis,
hence limiting to a shorter c a2 dimension.
This is achieved by projecting the
intersection of the concrete plane back
to other side of the corner. Please refer to
Figure 9.3.2.2 and Figure 9.3.2.3 covering
the perpendicular shear analysis at acute
degree corner. Please refer section 9.2.2
for Longitudinal shear method of analysis
for acute angle corner for detail analysis
of face of slab.
Tension: Acute angle corners do not have
the same amount of concrete throughout
as 90 degree corners. The rebar can be
bend having at least 12” in accordance to
ACI-318 as shown in Figure 9.3.2.2. The
pullout strength should be calculated by
hand using 12” development length. The
c b concrete cover is taken as minimum of
the four s/2, c b1 , c b2 and c b3 dimensions.
(s=spacing between rebars). Refer Figure
9.3.2.2 and Figure 9.3.2.3.
Figure 9.3.2.3 — HAC CRFOS U — Single anchor channel — Acute angle Corner — Section View.
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