Hilti Bracket Holding Down Anchor

Thanks for the question. I'd suggesting contacting your local HILTI office but I'd suggest some further investigation into why the void was there i.e. base material not as expected assumed solid slab but a topping onto of a hollow core plank etc or a large aggregate breaking free etc . Additionally they would also need to know the loads being applied and if what the original anchors were that were specified ideally the more info you can provide the better. They can then review the information and provide a solution.