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Hilti HY 200 to concrete soffit

Posted by Greg Killenabout 6 years ago
Hilti HY 200 to concrete soffit

Had a request from contractor on site today to substitute competitors product for this one on the basis that it would not stay in the holes in the concrete ceiling

We arrived at HY 200 using the Hilti app and selecting the ceiling application. Can anyone please clarify?

HY200,Viscosity,soffit,ceiling,substitutions
4 Replies
Posted by Damishabout 6 years ago
Answer Accepted

Thank you for the response Greg.

Glad you asked that question.

The installation details in the ETA outlines the systems that have been tested and approved. This includes overhead anchoring applications for HY 200-R.

Considering the narrow annular gap, the wedge ‘intrusion’ or penetration within the hole will be relatively minute. As an example where annular gap is 1 mm, wedge penetration will be roughly 3-4 mm.


I hope this helped answer your question. Please let me know if need any further clarification.

Damish

SA TS 101,HY 200-R,wedges
1 comment on this reply
Posted by Greg Killenabout 6 years ago
That is a good point! I'm satisfied with this for my application but it does assume a wedge angle. A contractor may make the wedge angle by any means including breaking thin timber along the grain, so some thin wedges could result. I think for Hilti to cover this properly, it would be good to see the wedging figure blown up a bit and including a max wedge penetration, that is excluded from the recommended load calculations. There may be a good market for a Hilti adhesive retaining cap. Thanks for your help today.
Posted by Greg Killenabout 6 years ago

Thanks Damish,

We are OK with sustained loads, our question really just relates to the practicality of installing this system. Your reply was really useful and I have read the document that you attached regarding the installation procedure using piston plugs and wedges.

I am aware that some manufacturers of ceiling inserts provide an adhesive retaining cap, which I assume also acts as a wedge for ceiling installations.

The ETA document for HY 200 refers to wedges used to hold the threaded rod in position during curing. Since it appears that the wedges are supplied by the installing contractor, how can the designer be sure that the intrusion of the wedge into the hole does not affect the strength results given in the HY 200 documentation?

HY200,ceiling,wedges,adhesive retaining cap,viscosity
Posted by Damishabout 6 years ago

Hi Greg,

Thank you for the question.

Hilti HIT HY 200-R is an approved chemical anchoring product for overhead applications, the attached European Technical Assessment (ETA) approval document advocates this with the statement ‘Overhead Installation is admissible’.

For more information regarding designing in accordance with SA TS 101/AS 5216 for overhead applications, particularly the effect of Sustained Loads, please visit the link below for a previous discussion on the topic.
https://ask.hilti.com.au/questions/can-chemical-anchors-be-used-in-overhead-applications/fkhpe5

The installation process for overhead applications is outlined in the ETA document, please have a look at these instructions.

Please let us know if you have any further questions.

Damish

SA TS 101,Overhead,soffit,HY 200-R,Sustained Load,AS 5216
file 0
ANCH - HY 200-R - ETA 12-0084 - Concrete, with HIT-V, HIS, HZA, meter rod - 20170728.pdf7.11 MB
Posted by Damishabout 6 years ago

Thank you for the excellent feedback.

Wedges are actually a part of Hilti anchoring accessories range, product name 'HIT-OHW' (short for Over-Head Wedges). Please see link below.

https://www.hilti.com.au/anchor-fasteners/dispensers%2c-accessories%2c-testers/mixing-nozzles-and-injection-accessories/387550

These wedges can be specified in documents and drawings so the contractor does not 'assume' the wedge angle or size.

Damish

Wedges