1. Anchor
Channel Systems
2. HAC
Portfolio
3. HAC
Applications
4. Design
Introduction
5. Base material
6. Loading
Optimize fixture
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
Optimized fixture: move the anchor channel and the slotted hole 1 in. down.
Oftentimes, a minor modification to the location of the slotted hole, without requiring a new die may help saving thousands of dollars.
The figure below (left) shows the original configuration; the anchor channel has an edge distance (ca1) equal to 3.50 in. The right
figure shows the new anchor channel location; the edge distance is equal to 4.50 in.
Note that the overall bracket geometry has not been changed. Moreover, the position of the "J" bracket does not change neither.
Nominal bracket and WL information
x1 = 2.5 in.
e WL = 2.5 in.
Slotted hole allows for +/- 1" up and down tolerance
REPOSITION SLOTTED HOLE TO INCREASE BACK-SPAN AND REDUCE WIN LOAD
ECCENTRICITIES
Additional information
c a1 = 3.5 in.
WL = 3500 lb (factored)
(only will load is applied, for illustration purposes)
Concrete compressive strength = 4,000 psi
Assume (2) t-bolt spaced at 6" O.C.
ORIGINAL BRACKET CONFIGURATION OPTIMIZED BRACKET
Nominal Dimensions
x 1 = 2.5 in.
e WL,1 = 2.5 in. Nominal Dimensions
x 2 = 3.5 in.
e WL,2 = 1.5 in.
Edge distance, c a1 = 3.50 in.
Bracket Down Dimensions
x 1 = 1.5 in
e WL,1 = 3.5 in.
For analysis purposes, the critical bracket position is down.
Therefore, for analysis purposes, the x 1 value is reduced by 1 in.
while the e WL is increased by 1 in.
Bracket Down Dimensions
x 2 = 2.5 in
e WL,2 = 2.5 in.
Edge distance, c a1 = 4.50 in.
Therefore, the key dimensions are the paying leg (backspan, x 1 )
and wind load eccentricity (e WL,1 ). The bracket has a true hole,
therefore, the bracket position is manually positioned assuming
the worst position; bracket down.
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The above figure illustrates a screen shoot of the example in
discussion, modeled in PROFIS Anchor Channel. Although the
bracket in the model is not a "J" type bracket, the software
assumes a rigid bracket.
In summary, the nominal dimensions need to be manually
adjusted to account for the critical bracket position.
Nominal Dimensions
x 1 = 2.5 in.
e WL,1 = 2.5 in.
Bracket Down Dimensions
x 1 = 1.5 in
e WL,1 = 3.5 in.
HAC-60 148/300 F with (2) HBC-C 8.8F M16x60 yields a
utilization of 100%. Concrete breakout in tension is the
governing failure mode.
HAC-40 91/300 F with (2) HBC-C 8.8F M16x60 yields a utilization of 94%. Connection anchor-channel is the governing failure mode.
Cast-In Anchor Channel Product Guide, Edition 1 • 02/2019
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