HAC_Technical-Guide

66 67
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
Mechanical interlock between channel lip and locking channel bolts via channel lip notches
Table 2.2.11.1 — Depth of notches
created by Hilti Locking Channel Bolts
(HBC-C-N)
Channel
Bolt
Diameter
(mm)
N
h
12 2 mm
16 2 mm
20 2 mm
The extra 2 mm shall be considered when determining the
protruding length ( l
ef
) of the Hilti Locking Channel Bolt
Hilti Locking Channel bolt grade
Table 2.2.11.2 — Hilti Locking Channel Bolts (HBC-C-N)
material information
Channel
bolt
Units Carbon steel
1
Property
class
- 8.8
f
u
ksi 116.0
(N/mm
2
) (800)
f
y
ksi 92.82
(N/mm
2
) (640)
Coating F
2
1 Materials according to Annex 3, Table 1
2 Hot-dop galvanized
Figure 2.2.11.4 – Notches in channel lips due to HBC-C-N.
Notch in channel lip created by HBC-C-N
after installation torque; 4 total.
Hilti Locking Channel Bolt Length
Table 2.2.11.3 — Hilti Locking Channel Bolts dimensions
Channel
Bolt
Anchor
Channel
Profile
units
Dimensions
Channel
bolt
length
Diameter ø b
1
b
2
k L
HBC-C-N
HAC-40
HAC-50
HAC-50 S
HAC-60
HAC-70
mm
M12
18.5
(0.73)
33
(1.30)
11.4
(0.45)
40
(in) (1.57-7.87)
mm
M16
40-300
(in) (1.57-7.87)
mm
M20
13.9 60-300
(in) (0.55) (2.36-7.87)
Table 2.2.11.4 — Channel lip thickness
Anchor Channel profile Channel lip thickness, L
th
HAC-40
7/6 4 i n
(2.6 mm)
HAC-50
HAC-50 S
1/8 in
(3.10 mm)
HAC-60
5/32 in
(4.1 mm)
HAC-70
13/64 in
(5.2 mm)
Minimum bolt overhang
According to AISC Steel Construction Manual, 13th Edition,
Section 14-10: “Adequate thread engagement for anchor rods is
identical to the condition described in the RCSC Specification
as adequate for steel to steel structural joints using high strength
bolts: having the end of the [anchor rod] flush with or outside the
face of the nut”.
There is no maximum thread protrusion limitation from the
standpoint of the function of the bolt.
If needed, the excess at the end of the bolt can be cut-off. The
nut shall be fully engaged. The outside face of the head of the
t-bolt has special markings to identify the t-bolt type and proper
head orientation of the t-bolt. If the t-bolt is to be cut or grind,
inspect and ensure the orientation and t-bolt type is as specified.
Table 2.2.11.5 — Recommended t-bolt overhang, L
o
Hilti locking channel bolt
diameter (mm)
Minimum nominal overhang,
L
o
M12
1/8 in
(3 mm)
M16
13/64 in
(5 mm)
M20
9/32 in
(7 mm)
Although there is minimum t-bolt overhang (Lo) can be zero, for
tolerance purposes it is recommended to have a minimum t-bolt
overhang. Table 2.2.11.5 provides the minimum t-bolt overhang
length.
Installation Torque
Table 8-2 — Installation torque for Hilti Locking Channel Bolts (HBC-C-N)
Bolt type Units
Installation torque T
inst
(Installation type A)
1
Installation torque T
inst
(Installation type B)
2
HAC-40
HAC-50
HAC-50 S
HAC-60 HAC-70 HAC-40
HAC-50
HAC-50 S
HAC-60 HAC-70
HBC-C-N M12 8.8
ft-lb
55
(75)
(Nm)
HBC-C M16 8.8
ft-lb
136
(185)
(Nm)
HBC-C-N M20 8.8
ft-lb
236
(320)
(Nm)
1 Installation type A: The fixture is in contact with the channel profile and the concrete surface
2 Installation type B: The fixture is fastened to the anchor channel by suitable steel part (e.g. square plate washer), fixture is in contact with the channel profile only
N
h
occurs after the installation torque is applied to the HBC-C-N t-bolt and the
2 mm deep notches are created in the lips of the anchor channel.
Figure 2.2.11.5 — Overhang of Hilti Locking Channel Bolt (HBC-C-N).