ACI-349 Approval for HSL-3 Heavy-Duty Expansion Anchor

Report WC 11-02 Hilti HSL-3 Compliance September 30, 2011

3.2 Testing under the direction of a licensed professional engineer.

ACI 355.2-01 states in Section 12.2 that, ”The testing shall be witnessed and

evaluated by a registered engineer employed or retained by the independent

testing and evaluation agency.”

Resolution: Testing was overseen by and the Evaluation report submittal

prepared by Prof. Dr.-Ing. Rolf Eligehausen of the University of Stuttgart

Institute for Building Materials. (He is now retired.) Prof. Eligehausen is not a

registered engineer because there is no formal engineering registration system

in Europe. Note that in Europe, licensing of structural engineers is

accomplished through accredited educational institutions. Prof. Eligehausen is

accredited for performing structural engineering. His experience in the

technology of fastening to concrete is significant.

Prof. Eligehausen has been conducting evaluation and approval of anchors in

Europe for more than 25 years, initially under DIBt (German) rules, and later

under the EOTA (European Organisation for Technical Approvals

(http://www.eota.be) guidelines. He participated in the development of the

criteria for qualification of anchor systems both in Europe and the United

States. As the author or co-author of over 230 papers and publications in

Europe and the U.S. on the subject of bond and anchorage and as a Fellow of

the American Concrete Institute, Prof. Eligehausen has established a

reputation on both sides of the Atlantic as the pre-eminent expert in the world

Table 1—Testing laboratories used for HSL-3 testing

1. CSTB: Centre Scientific et Technique du Batiment, Marne-la-

Vallee, France (accredited by COFRAC (full ILAC-member)

2. IWB: Institut für Werkstoffe im Bauwesen der Universität

Stuttgart, Germany (accredited by ICC ES, IAS, and DAR (full ILAC-

member))

3. Bautest: Gesellschaft für Forschung und Materialprüfung im

Bauwesen GmbH, Augsburg (accredited by DAP (full ILAC-member))

4. IFBT: Institut für Fassaden- und Befestigungstechnik GmbH

Liepzig, Germany (DIBt-accredited)

Limited testing was performed by the manufacturer

5. H: Hilti Entwicklung Befestigungstechnik, Kaufering, Germany or

Hilti Konzern-Forschung