To Whom It May Concern:
I am currently designing a four-anchor connection for a hollowcore wall panel, intending to handle both tension (Fx) and shear (Fy). I plan to use HAS-U anchor rods with a back-in plate, as shown in the attached markup.
I believe the tension should be acceptable since we have a back-in plate, unless there is anchor steel failure or slab punching caused by the back-in plate. Both capacities should be robust. However, regarding shear, the connection is close to the edge, and I suspect it has a weaker capacity compared to a solid concrete wall. I am unsure about how to check concrete edge breakout and pryout along the Fy axis. The HAS-U datasheet does not provide information specific to hollowcore panels. Can PROFITS be used to check my case? If not, could you advise on any datasheets I can refer to?
I also noticed that HUS4 can be used in hollowcore applications. However, the datasheet appears to lack concrete breakout or pryout data for the hollowcore wall panel.
Regards,
Steven
Hi Steven,
Thank you for reaching out to Hilti.
The post-installed anchor systems provided by Hilti are comprised of rods (such as the HAS-U) and a chemical mortar.
HAS-U rods can be used in hollow core walls, provided it is installed with one of our chemicals, such as HIT-HY 270. Please find more information in this >> link. Go to the documents session to find ETA approvals and technical data sheet that contain the accepted configurations and loads.
It's important to highlight that for hollow core wall applications, the capacity of the anchor is dependent on the type of wall and if the specific wall was tested with the post-installed fixing system.
If you still have questions and would like our technical team to check your specific application, please fill the form in this >> link.
We hope this is helpful.
Kind regards,
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