Can I use the hammer drilling adhesive bond capacity if the contractor would like to core drill a smaller pilot hole and then come back with a properly sized hammer drill to create that condition for better adhesive bonding?
Hi Jake,
For a case like this we have seen customers in the past run two different anchor calculations -- one using hammer drilled holes and one using core drilling -- and use the more conservative results. The decision of what drilling method that should be used for anchor calculations is ultimately up to the engineer of record since there is not specific testing for a partially core drilled and hammer drilled hole.
Cheers,
Emily
Hi Darren,
For technical assistance, please reach out to hnatechnicalservices@hilti.com or give us a call at 877-749-6337.
Regards,
Matthew