In hilti profis designing for yield using Hilti HIT HY 200 V3 Rebar, the result shows the development length ld. Does it mean that the post-installed rebar is already adequate for concrete breakout and bond strength(design for yield)? Because there is no design output for breakout and bond strength, only the ld?
Hello,
The PROFIS Engineering Concrete to Concrete module defaults to ACI 318 Chapter 25 provisions for rebar development while the Anchoring to Concrete module uses ACI 318 Chapter 17 provisions.The difference between designing with Anchoring to Concrete Provisions and Rebar Development Theory can be further understood using Hilti's Anchor Fastening Technical Guide starting on page 24.
In the Concrete to Concrete module, these different design methods can be applied by navigating to the Loads and Design Methods tab on the left of the interface and pressing the Design Method drop-down option (shown in the image below). More information on each of the options can be found by hovering over the icon next to the text. When “Allow for research-based design methods” is selected, the option to consider ACI 318 Chapter 17 calculations is made available.
I hope this helps. For additional questions, please reach out to hnatechnicalservices@hilti.com.
Best,
Sinan
Hello LJ,
Could you please send this question along with the PROFIS Engineering file (.pe file) to hnatechnicalservices@hilti.com?
Kind regards,
Sinan