how deep chemical anchors can go ?

Hi Bin Zhang,

Thank you for your question.

I believe our technical team already reached out to you last week to support with this topic. If you still have questions, please request further support through this link >> here.

We're also posting a summary here so we can keep the record for future references:

There is no issue with coring 200 mm into the precast wall and then to the existing slab. However, when it comes to anchor installation, Hilti cannot predict the behavior of anchors in non-monolithic structures as there may be some bending moment between the structures which can affect the anchor capacity. That has to be decided by the project design engineer.

Hence, in order to design this anchor connection in Profis Engineering, you will have to consider the precast wall as grout (>30 MPa) and apply the forces accordingly.

Hope this helps.

Best regards,
Ask Hilti Team