HAC_Technical-Guide

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Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
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
Code Discussion Calculations
Step 3: Determination of worst tolerance
Please note that the t-bolt forces are applied
all along the channel length and the forces at
anchors are determined. Then the worst case
utilization report will be printed out in profis
anchor channel software.
Therefore the bracket can be located any where
along the available channel length. The anchor
element forces are evaluated in this example at
the worst location along the channel length.
The worst utilization is obtained at 2.896”. The tolerance interval is -11.812” and
11.812” (13.8”-(2x0.984”).
Figure 14.1.9 — Design example – Profis anchor channel - 3D Back View
Figure 14.1.10 — Design example – Profis anchor channel - 3D Front View
Code Discussion Calculations
Step 3: Determination of worst tolerance
ESR-3520
Section 4.1.2.2
The T-bolt #1 tension force (850 lb) will have an
influence on each anchor element as shown
below. The tension forces on anchor elements
#1, #2 and #3 resulting from this influence will
be defined as N
ua1,1
, N
ua1,2
and N
ua1,3
respectively.
The influence factor A
1, #x
corresponds to the
influence on anchor element #x from T-bolt #1.
The parameter “s” corresponds to the spacing
between each anchor element. The parameter ℓ
in
corresponds to the influence length for T-bolt #1.
The T-bolt #2 tension force (850 lb) will have
an influence on each anchor element as shown
below. The tension forces on anchor elements
#1, #2 and #3 resulting from this influence will
be defined as N
ua2,1
, N
ua2,2
and N
ua2,3
respectively.
The influence factor A
#x,2
corresponds to the
influence on anchor element #x from T-bolt #2.
The parameter “s” corresponds to the spacing
between each anchor element. The parameter ℓ
in corresponds to the influence length for T-bolt
#2.
h
ef
= 4.173 in.
Channel specification Length: 13.8 in., anchor spacing s: 5.906 in.,
projection: 0.984 in., width: b
ch
= 1.650 in., height: h
ch
= 1.220 in.
I
y
= 0.0796 in.
4
s = 5.906 in.
ℓ
in
= 4.93x(0.0796 in.
4
)
0.05
(5.906 in)
0.5
ℓ
in
=10.56 in
Figure 14.1.11 — Design example – Anchor Tension Forces