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Capacity calculation of Hilti HIT-HY 70 HAS-E-R rods

Posted by Sohel Hasanalmost 6 years ago
Capacity calculation of Hilti HIT-HY 70 HAS-E-R rods

Hi there
I am assessing a exiting telecommunication site where antenna steel mount has been attached to the brick wall using Hilti HIT-HY 70 CHEMICAL WITH 4 OFf HAS-E-R rods. I was checking TS_101-2015 to calculate pull out capacity however could not find anything for brick / masonry wall.
I found a document about Hilti HIT-HY 70 in Hilti website however detail calculation of pull out capacity is not available in this document. Is the capacity listed in table in this Hilty document based on theoretical calculation or load test on site? If this is based on theoretical calculation could you please provide some references. I have attached the Hilty document what I found in Hilti website.

Regards,
Sohel Hasan   

capacity,HIT-HY 70

1 Reply
Posted by Damishalmost 6 years ago

Hi Sohel,

Thank you for the question. I will be more than happy to help you with your query.

SA TS 101/AS 5216 is for Design of Post-Installed and Cast-In Fastenings for use in Concrete only. Currently, there is no Australian standard in place for Post Installed anchors into Masonry. Therefore, Hilti implements the European Technical Approval Guidelines ETAG 020 (Plastic Anchors) and ETAG 029 (Metal Injection Anchors for use in Masonry).

The loading data presented in the Technical data sheet for HY 70, attached in this thread, is based on Testing and Assessment done to the relevant methods at that time, on the listed Australian Bricks and Blocks by Hilti.

One thing I would like to bring into consideration of all readers is that HY 270 has replaced HY 70. HY 270 is a newer and improved version of the chemical anchor, therefore, loading data for HY 70 can be used as a conservative approach.

I hope this helps answer your question.

Please let us know if you have any further questions.

Damish

Anchor,HY 270,HY 70,Masonry,ETAG,Chemical Anchor