I have a condition that due to the presence of critical rebar in my concrete wall, the available embedment depth is limited to 1.5 inches. The total load is a relatively low 150 lbs (shear and tension) distributed across 5 anchors (see attached files).
Based on strength calculations, my design using 5 KWIKHUS-EZ (KH-EZ)-SS316 1/4" (1 5/8") anchors appears adequate. The effective embedment depth (hef) is 1.190 inches, and the nominal depth (hnom)of 1.625 inches (I am limited to 1.5” in this specific condition). My question is, how significantly would the anchor capacity be impacted if we shorten the embedment depth to 1.5 inches? Considering the current demand-to-capacity ratio of 32%, my judgment is that a reduction of
1/8" in embedment length wouldn't drastically affect the capacity. However, I would appreciate your professional advice on this matter.
Hi Yaser,
Unfortunately, a nominal embedment depth of 1.5" for the 1/4" KH-EZ SS316 is outside the scope of Hilti's supportive testing, so it will be up to your engineering judgement to determine if the anchors are suitable for the given application.
For additional assistance, please reach out to hnatechnicalservices@hilti.com or give us a call at 877-749-6337.
Regards,
Matthew