Customer wishes to use 5/8" dia rod with 2-3/4" embedment in a 4" slab with RE-500 V3. since PE will not allow this calculation, the customer is OK with using the tensile value of a 1/2" rod with 2-3/4" embedment in a 4" slab. Do we have any documentation to substantiate this, basically saying the tensile holding value of a 5/8" rod with 2-3/4" embedment in a 4" slab will be equal or greater than the tensile holding value of a 1/2" rod with 2-3/4" embedment in a 4" slab? thank you for your help. feel free to set up a call with me to help me understand.
Hi Stephen,
Thank you for reaching out. In general, the minimum concrete thickness, edge distances, and anchor spacings used by PROFIS Engineering are those that are reflected in each product’s corresponding ICC Evaluation Service Report. For HIT-RE 500 V3, this would be ESR-3814. ESR-3814 was generated following ICC Acceptance Criteria AC308. Based on the testing, the minimum parameters for each diameter of anchor are established. A risk of using a concrete thickness below the minimum published for that diameter would include concrete splitting. While other failure modes may be calculated at the Engineer’s discretion, the splitting failure mode would be a concern dependent on the anchor’s actual diameter, effective embedment, and the installation parameters established as results of the AC308 testing.
Ultimately, all anchorage decision are at the judgement of the Engineer of Record on the project. On-site testing may aid that judgement.
I hope this helps. If you have additional questions, please reach out to hnatechnicalservices@hilti.com.
Kind regards,
Sinan