I am anchoring shade sail tension cables to an exterior hotel wall/deck condition. The wall has brick veneer outside, but the brick is not structural. Behind the veneer is a concrete slab/structural concrete condition. I cannot remove the brick and I cannot access the backside for through-bolting.
I need an anchor system that passes through the brick veneer and cavity using steel crush tubes, so the brick is not compressed or load-bearing. The load must be transferred into the concrete behind the veneer. Approximate standoff from face of brick to concrete is about 8 inches.
I need each connection point to resist roughly 8 to 10 kips of tension from a shade sail corner, with wind/cyclic loading. I am considering 5/8-inch or 3/4-inch threaded rod with a steel exterior plate and crush tubes. What Hilti anchor system, rod size, embedment depth, and installation method would you recommend for this condition?
Hi Derek,
Thank you for reaching out. As Hilti is not a registered design service, we are unable to provide design recommendations or confirm designs. However, important considerations when making an anchor selection and design may be the large stand-off and high tension loads.
Below are technical resources for designing with anchors:
- For design help, engineers typically utilize Hilti’s PROFIS Engineering Suite software to perform calculations based on the specific conditions of the project. Click here to access the software from Hilti’s website.
- Hilti has several how-to videosto help users get started with the PROFIS Engineering Suite software. For additional information on the various design modules/methods, Hilti provides several on-demand Ask Hilti webinarson topics such as base plate design, anchoring to masonry, and anchoring to concrete-over-metal deck.
- For further information on the software’s functions and its calculations, see this PROFIS Engineering Design Guide
- PROFIS Engineering FAQ on AskHilti
- Specific calculations for your project can be found in the report for your design. The report includes equations, variables, and calculations for tension and shear capacities and utilizations. To generate a PDF report, click "Create Report" in the upper right hand corner of the PROFIS Engineering webpage.
Ultimately, all design decisions (including anchor selection) are at the discretion of the Engineer of Record (EOR) on the project.
Regards,
Katelyn