1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
9. Special Anchor
Channel Design
10. Design
Software
11. Best
Practices
12. Instructions
for Use
13. Field Fixes
14. Design
Example
9.2.12 — H
AC AND HAC-T DESIGN: TOP OF SLAB INSIDE CORNER
WITH PAIR OF ANCHOR CHANNEL
Figure 9.2.11.2 — Analysis of channel 1 using the simplified method in
PROFIS Anchor Channel.
Figure 9.2.12.1-a — Inside Corner — Tension.
Perpendicular shear: For the concrete failure modes in shear,
the stresses in the concrete induced by the two anchors of
the anchor channels closer to the corner change the concrete
behavior. The concrete crack does not follow the idealized
failure plane (c cr,V ) but the path of least resistance. This concept
is illustrated in Figure 9.2.12.1-b. The fictitious edge can be
taken in between the distance (a+b) for analyzing the anchor
channel a and b depending on whichever anchor channel
needed more concrete. To evaluate channel a and b the anchor
channel is modelled with c a2 distance in between distance (a+b).
With limiting the edge, the concrete breakout strength in shear
is reduced by the modification factor for corner effect ψ co,V .
Tension: To account for the influence of the adjacent corner
anchor channel, the corner distance is reduced by assuming
the concrete crack follows the path of least resistance and
considering the corner distance where the “crack” of each
anchor channel overlaps. For the concrete failure modes
in tension, the stresses in the concrete induced by the two
anchors of the anchor channels closer to the corner generates
a concrete cone with the radius of c cr,N . The distance between
the closest anchor heads is defined as x, as shown in the Figure
9.2.12.1-a. These channels should be analyzed using a fictitious
c a2 of (x/2). To evaluate channel a and b the anchor channel is
modelled in Profis anchor channel software with c a2 of x/2. With
limiting the edge the concrete breakout strength in tension is
reduced by the modification factor for corner effect ψ co,N .
The distance between the closest anchor heads is defined as
x, as shown in the Figure 9.2.11.1. For concrete breakout in
tension, concrete breakout and pryout in shear the imaginary
concrete side edge distance of (x”/2) is considered. The side
edge distance of (x”/2)-(1”) can be used while modeling in Hilti
PROFIS Anchor Channel software as shown in Figure 9.2.11.2.
1" is anchor channel's overhang that is needed to be deducted
from side edge when modelling it in profis.
Figure 9.2.11.1 — Example of simplified method of HAC in a top of
curb corner.
8. Reinforcing
Bar Anchorage
9.2.11 — H
AC AND HAC-T DESIGN: EXAMPLE OF DESIGN OF TOP OF
SLAB OUTSIDE CORNER
7. Anchor Channel
Design Code
Interior angle corners with headed stud HAC channel loaded
only in tension or forces in all three directions: The distance
between the closest anchor heads is defined as x, as shown in
Figure 9.2.12.1-a. These channels should be analyzed using a
fictitious c a2 of (x/2).
Same concept can be used for analyzing acute and obtuse
degree inside corners with headed studs anchor channel.
Figure 9.2.12.1-b — Inside Corner — Shear Perpendicular
254
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
255