1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
One BOS and another TOS channels: BOS
away from TOS
Current AC232 excluded parallel anchor channels. Hilti anchor
channel analysis of parallel anchor channels is based on ACI
318 provisions. The analysis of the concrete breakout strength in
shear is based on ACI 318 principles in conjunction with AC232
design methodology.
All steel failure modes are in accordance to ESR-3520.
One can use the principles of to use ACI 318-14 provision to
evaluate top and bottom.
Concrete breakout strength in shear of parallel anchors is per
ACI 318 concepts pertaining to dividing the concrete between
the two channels. Principles of AC232 should be used while
evaluating the concrete breakout capacity of all the concrete
failure modes.
8. Reinforcing
Bar Anchorage
9. Special Anchor
Channel Design
10. Design
Software
Another assumption of the distribution of forces indicates that
the total shear force would be critical on the rear anchor and its
projected area.
This provision is checked for parallel double channels in order
to confirm that the total available concrete between the BOS
channel and the front edge has sufficient capacity to take the
total shear force experienced by both channels.
11. Best
Practices
12. Instructions
for Use
13. Field Fixes
14. Design
Example
BOTTOM OF SLAB: The perpendicular concrete breakout
strength of the BOS channel should be evaluated using c a1 as
the concrete edge distance of c a1,b . The BOS anchor channel
should be loaded with the total shear force (V uay,a +V uay,b ) acting
on both anchor channels. The height (h) used in the analysis is h
as shown in Figure 9.2.14.6.
Perpendicular Shear
TOP OF SLAB embed: Shear forces on TOS and BOS are V uay,a
and V uay,b respectively. The front edge of the ToS embed is
checked against the V uay,a force. For the calculation of concrete
breakout, c a1 , is taken as c a1,a .
Figure 9.2.14.5—Calculation of A vc for single anchors and groups of anchors
per ACI 318-14.
Figure 9.2.14.6 — Parallel Channels Top and Bottom: BOS away from TOS-
Perpendicular Shear BOS Section View.
Figure 9.2.14.1 — Parallel Channels Top and Bottom: BOS away from TOS -
Plan View.
9.2.14 — HAC AND HAC-T DESIGN: PARALLEL CHANNELS TOP AND
BOTTOM
7. Anchor Channel
Design Code
Figure 9.2.14.3 — Parallel Channels Top and Bottom: BOS away from TOS-
Perpendicular Shear TOS-Plan View.
Figure 9.2.14.7 — Parallel Channels Top and Bottom: BOS away from TOS-Perpendicular Shear BOS-Plan View.
Figure 9.2.14.2 — Parallel Channels Top and Bottom: BOS away from TOS -
Section View.
260
Figure 9.2.14.4— Parallel Channels Top and Bottom-BOS away from TOS:
Perpendicular Shear TOS-Section View.
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