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guradrail anchoring

guradrail anchoring

guradrail anchoring

Hi Everyone
I have to pick a type of anchor bolt (HILTI) for a guardrail in a parking lot, and was wondering if anyone has an example of the design procedure. I went on the Hilti site and their example is not very clear on how to use their reduction factors imposed by the spacing of the anchor bolts and the edge distance. If anyone has an example for this type of design and/or a site where a clear explanation can be found, please let me know.
Thanks everybody in advance.

RE: guradrail anchoring

You will have shear and tension mormally, hence you may use the more understandable document

Adhesive Anchors Design Manual 1st ed.
AC100PLUS and AC5.5PLUS, Powers Fasteners


the procedure will be similar for mechanical anchors.

Other documents available (search in google)

EPCON Adhesive Anchoring Solutions for Solid Concrete Applications

ICBO Acceptance Criteria for Expansion Anchors in Concrete and Masonry


RE: guradrail anchoring


Hilti changed how they presented reduction factors a few years ago. It can be a little confusing because they provide them in a chart as a ratio of edge dist or spacing to embedment depth.  It might be clearer if you had their full length printed catalog to study, which I believe is free for the asking.

The Powers/Rawl catalog is also a useful reference on designing anchors for combined forces and with reduction factors.  Powers has a more straightforward method of finding reduction factors, I feel.

Since each company has published anchor capacities that are based at least partly on tests, recommend that you don't mix and match reduction factors.  If you are going to use a Hilti product, you should also use their allowable capacities and reduction factors.   

RE: guradrail anchoring

You can also call Hilti.  They're more than willing to help you out with their products.

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