Stack concrete total thickness

Hi Jesse,

Hilti anchor testing is conducted in monolithic slabs only. Thus, Hilti does not have test data available for anchors installed in more than one layer of concrete. Engineering judgment could be considered if the housekeeping pad and supporting slab are sufficiently connected to act as one element. Additional information can be found in the American Concrete Institute (ACI) publication, “Anchoring into Housekeeping Pads,” which was originally published in the Q&A section of the December 2012 issue of Concrete International and can be purchased by clicking here to access the ACI online store. 

Best Regards,

Emily