HAC_Technical-Guide
62 63
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
2.1 HAC
Nomenclature
2.2 Geometric Parameters 2.3 Structural Performance
2.4 Ordering
Information
2.5 Standard
Portfolio
2.6 HAC Custom
Solutions
HAC
HAC
CRFoS U
HAC EDGE HBC-C
HAC-T
HAC-30
HAC-T
EDGE
HBC-T
HBC-B
HAC
HAC
CRFoS U
HAC EDGE HBC-C
HAC-T
HAC-30
HAC-T
EDGE
HBC-T
HBC-B
1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material 6. Loading
7. Anchor Channel
Design Code
8. Reinforcing
Bar Anchorage
9. Special Anchor
Channel Design
10. Design
Software
11. Best
Practices
12. Instructions
for Use
13. Field Fixes
14. Design
Example
2.2.8 HAC EDGE AND HAC S EDGE IN TOP OR BOTTOM OF
SLAB CORNERS
Pair of HAC EDGE or HAC S EDGE in top of
slab corner
HAC EDGE and HAC 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.
Corner distance c
ca2
is measured to the center of the anchor.
Figure 2.2.8.1 — Corner configuration of pair of HAC EDGE in top of slab,
plan view.
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.
HAC EDGE at corner requires the use of HAC EDGE and HAC
EDGE C. The EDGE C plate of HAC 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 EDGE.
HAC EDGE C and HAC EDGE C steel strengths are provided in
section 2.3. For design of channels at corners, refer to Chapter 9.
Figure 2.2.8.2 — Isometric view of HAC EDGE and HAC EDGE C.
HAC EDGE and HAC S EDGE at non-90°
corners
HAC EDGE C and HAC 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.
Figure 2.2.8.3 — HAC EDGE and HAC EDGE C in an acute corner, plan view.
Table 2.2.8.1 — Minimum substrate edge and corner distance for pair of HAC EDGE and HAC S EDGE at a corner
Normal weight
concrete
Sand lightweight and
all lightweight concrete
Anchor channel Units h
ef
*h
min
C
a1
C
a2
C
a1
C
a2
HAC-50 EDGE
in 3.70 3.94
1.97
(50)
3.94
(100)
3.94
(100)
(mm) (94) (100)
HAC-50 EDGE C
in 4.17 4.92
(mm) (106) (125)
HAC-50 S EDGE
in 3.70 3.94
3.94
(100)
(mm) (94) (100)
HAC-50 S EDGE C
in 4.17 4.92
(mm) (106) (125)
The Hilti Channel Bolts (HBC) 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, therefore,
and HBC are only compatible with Hilti Anchor Channels. The
head of the HBC 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 desired jobsite
tolerance.
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 the bolt is properly positioned before the required
installation torque is applied.
HBC come with a special marking to ease the identification
before and after installation takes place. All HBC are covered by
ESR-3520.
Figure 2.2.9.1 — HBC-C, washer, and nut (left). HBC-C outside face
inspection marking and installation (right).
Hilti Channel Bolts — C (HBC-C) are suitable for channel profiles
HAC-40, HAC-50, HAC-60, & HAC-70. HBC-C come in bolt
diameters M12, M16, and M20, steel grades 8.8 and 50, finishing
and materials HDG and SS, respectively
HBC-C can be used to transfer tensile loads, shear loads
perpendicular to the longitudinal channel axis, or any
combination of these loads. Transferring of the loads takes
place via interlock between the HBC and the channel lips.
Table 2.2.10.1 — Hilti Channel Bolts (HBC-C) material
information
Channel bolt Units Carbon steel
1
Stainless steel
1
Property class - 8.8 A4-50
f
u
ksi
(N/mm
2
)
116.0 72.5
(800) (500)
f
y
ksi
(N/mm
2
)
92.82 30.4
(640) (210)
Coating F
2
-
1 Materials according to Annex 3, Table 1
2 Hot-dop galvanized
Special markings on the outer surface of the t-bolt aids the
installer to ensure the t-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. Once the fixture is installed, the head of the t-bolt is
no longer visible and the only visible part of the t-bolt is its outer
face.
Figure 2.2.10.1 — T-bolt marking.
HBC-C 8.8 F M12 HBC-C 50 R M12
Figure 2.2.10.2 — Hot dip galvanized t-bolt (left) and stainless steel t-bolt
(right).
2.2.9 HILTI CHANNEL BOLTS
2.2.10 HILTI CHANNEL BOLTS: HBC-C