1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
Units
Property class - 8.8
fu ksi
(N/mm 2 ) 116.0
fy ksi
(N/mm 2 ) 92.82
4.17 4.92
(mm) (106) (125)
in 3.70 3.94
(mm) (94) (100)
in 4.17 4.92
(mm) (106) (125)
HAC-50 S EDGE
HAC-50 S EDGE C
82
F 2
1 Materials according to Annex 3, Table 1
2 Hot-dop galvanized
1.97
(50)
3.94
(100)
HBC-B 4.6F M12
HBC-T 8.8F M16
HBC-T 8.8F M20
Figure 2.2.19.3 — Hilti Serrated Channel Bolt, HBC-B M12, HBC-T M16 and
HBC-T M20
HBC-T and HAC-T are subjected to a special corrosion protection process
which reduces the amount of zinc that is accumulated in the serrations.
Thus the difference in color between the HBC-B and HBC-T and the higher
slip resistance of the of the HBC-T and HAC-T.
3.94
(100)
3.94
(100)
Figure 2.2.19.2 — Head of Hilti Serrated Channel Bolt (HBC-T).
NOTE:
HBC-B can only be used with HAC-30.
HBC-T can only be used with HAC-T.
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
83
in
C a2
(640)
(100)
C a1
(800)
3.94
(94)
C a2
Carbon steel 1
3.70 (mm)
C a1
in HAC-50 EDGE
HAC-50 EDGE C
*h min
Sand lightweight
concrete
Channel bolt
Coating
h ef
Special markings on the t-bolt aid the installer to ensure the bolt
is properly positioned before the installation torque is applied.
Moreover, it allows the installer and inspector to identify the
type of bolt after the fixture is installed.
Hilti serrated channel bolts (HBC-T) are only suitable for channel
profiles HAC-T50 & HAC-T70. HBC-T come in bolt diameters
M12, M16, and M20, steel grades 8.8 and HDG finishing. Hilti
serrated channel bolts (HBC-B) are only suitable for channel
profiles HAC-30.
Figure 2.2.17.3 — HAC-T EDGE and HAC-T EDGE C in an acute corner, plan
view.
2.2.19 H
ILTI SERRATED CHANNEL BOLTS: HBC-T AND HBC-B
Table 2.2.19.1 — Hilti Serrated Channel Bolts
(HBC-T) material information
Normal weight
concrete
Units
(left) and HBC-B (right)
HBC-T and HBC-B can be used to transfer tensile loads, shear
loads perpendicular to the longitudinal channel axis, longitudinal
shear forces, or any combination of these loads. Transferring of
the loads takes place via interlock of the serrations of the HBC-T
and serrated lips of HAC-T or HBC-B and serrated lips of HAC-30.
Table 2.2.17.1 — Minimum substrate edge and corner for pair of HAC-T EDGE and HAC-T S EDGE at a corner.
Anchor channel
Figure 2.2.18.1 — Hilti Serrated Channel Bolt with nut and washer; HBC-T
HAC-T EDGE at corner requires the use of HAC-T EDGE and
HAC-T EDGE C. The EDGE C plate of HAC-T EDGE C comes
with rebars that are located 1 rebar diameter below the bottom
of the channel profile to prevent clashing of the rebars with the
HAC-T EDGE.
HBC-T and HBC-B come with a special marking to ease the
identification before and after installation. All Hilti serrated
channel bolts are covered by ESR-3520.
The new Hilti design method for corners follows the principles of
AC232 and allows the anchor channels to be installed as close
as physically possible to the corner, as long as the minimum
corner and edge distances are not exceeded. The use of HAC
EDGE allows the concrete to take higher shear forces, making it
the perfect solution for corner applications.
The head of the t-bolt is first installed parallel to the channel
profile. Once it is positioned in place, the bolt is turned 90°
clockwise. The head of the bolt has been engineered in a
way that the t-bolt cannot rotate more than 90° clockwise.
This ensures that the bolt is properly positioned before the
installation torque is applied.
Figure 2.2.17.1 — Corner configuration of pair of HAC in top of slab.
The Hilti Serrated Channel Bolts (HBC-T and HBC-B) are part
of the anchor channel system. HBC are threaded fasteners
commonly known as T-bolts. HBC are the link between the
fixture and anchor channel. The HBC have a proprietary head
geometry and are compatible with Hilti channels only. The
head of the HBC-T or HBC-B can be inserted along the channel
cavity. The fixture is connected to the anchor channel by
channel bolts with a nut and washer. Thus, allowing for the so
needed jobsite tolerance.
Corner distance c ca2 is measured to the center of the anchor.
2.2.18 HILTI SERRATED CHANNEL BOLTS
HAC-T EDGE C and HAC-T S EDGE C are suitable for non-90°
corners. The use of two independent anchor channels simplifies
the portfolio by no requiring custom made channels. See
chapter 9 for design information.
14. Design
Example
13. Field Fixes
HAC T EDGE and HAC-T S EDGE at non-90°
corners
12. Instructions
for Use
HAC-T EDGE and HAC-T S EDGE steel strengths are provided in
section 2.3. For design of channels at corners, refer to chapter 9.
11. Best
Practices
Figure 2.2.17.2 — HAC-T EDGE and HAC-T EDGE C.
10. Design
Software
HAC-T EDGE and HAC-T S EDGE are ideal for top of slab corner
applications. Two independent anchor channels at the corner
allows de-coupling the loads at both channels, preventing
anchors and rebars from taking undesired loads. Furthermore,
using two independent channels eases the installation in
congested areas, preventing damage of the anchors during
installation.
9. Special Anchor
Channel Design
Pair of HAC-T EDGE and HAC-T S EDGE in
top of slab corners
8. Reinforcing
Bar Anchorage
2.2.17 HAC-T EDGE AND HAC-T S EDGE IN TOP OR BOTTOM OF SLAB
CORNERS
7. Anchor Channel
Design Code