Hilti engineering for
earthquake
applications
Building a future safer from earthquakes: new EU guidelines.
Hilti. Outperform. Outlast.
Hilti engineering for
earthquake
applications
New rating classifications for anchor performance under seismic load: C1 and C2
Post-installed anchor seismic design
EOTA TR045 sets the fastening seismic design standard
New European testing procedure for determining the seismic suitability of fastenings
The seismic pre-qualification of anchors has been regulated in Europe since the release of
ETAG 001 Annex E in early 2013. Anchors subject to this new test procedure must now
incorporate in the ETA all the required seismic design technical data . The suitability for
seismic loading is classified as:
EOTA TR045 sets the standard for the seismic design of steel-to-concrete connections until
the new EN 1992-4 is released (release date pending confirmation).
This code is in full compliance with the standards in the new ETAG 001 Annex E.
ETA seismic category C1 – similar to U.S. pre-qualification procedure; only suitable for
non-structural applications according to the EOTA TR045 recommendations
Three design options
ETA seismic category C2 – arduous seismic crack movement tests qualify an anchor as
suitable for more demanding structural and non-structural applications
Structural applications
Acceleration (ag.S)
< 0.05g
0.05g to 0.1g
> 0.1g
Building importance
II, III, IV
non-seismic
ETA C2
Non-structural applications
Acceleration (ag.S)
Building importance
II, III
< 0.05g
The design code incorporates three design approaches which are described below. Note
that all three of these approaches are acceptable within their application conditions.
a1) Capacity design
The anchorage is designed for the force corresponding to the yield of a ductile component
or, if lower, the maximum force that can be transferred by the fixture or the attached element.
Building importance
IV
non-seismic
0.05g to 0.1g
ETA C1
> 0.1g
ETA C2
ETA C2
a2) Elastic design
The fastening is designed for the maximum load assuming an elastic behavior of the fastening and of the structure.
b) Design with requirements on the ductility of the anchors
This design for ductile steel failure requires an anchor classified as ductile. Additionally, this
approach is applicable only for the tension component and some provisions require to be
observed in order to ensure that the cause of failure is steel failure.
Hilti engineering services
A team of qualified and experienced engineers is available to
provide you with more detailed information and to help you determine and design the best solution for your particular project.
Tel +44 161 886 1144
Fax +44 161 786 3840
E-mail GBTAS@hilti.com
The map above is based on national earthquake data (for ordinary buildings and ground type A) and provides perspective on the
relevance of the new ETA guidelines in various countries. For more precise information see national regulations.
Hilti engineering for
earthquake
applications
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Seismic design and specification of anchor connections is crucial in both structural and non-structural
applications.
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Seismic-relevant structural applications
Seismic-relevant non-structural applications
Structural connections are vital to ensure that the structure responds
to a seismic event in a proper, predictable manner. Connections
should therefore be clearly detailed in the design phase to make
certain that both contractors and building inspectors comprehend
project specifications.
Firm, well thought out specifications are the best way to ensure that
the designed product is the one that is actually used.
Anchors are often used to fasten non-structural components.
Their design and selection is therefore crucial in terms of minimizing both injuries to building occupants and the costs associated
with seismic events.
As fire is a common byproduct of earthquakes, firestop systems
should be specified in accordance with their ability to withstand
extreme deformation.
 Seismic retrofitting (e.g. bracings, shear reinforcement)
 Mechanical and electrical supports
 Structural steel element connections to concrete
 Suspended ceilings and lights
 Post-installed rebar connections
 Secondary steel connections and fastenings for utilities
 Shear wall fastenings
 Façade systems: curtain and perimeter walls
 Metal deck fastening with powder-actuated fasteners
 Firestop cable and pipe penetrations and joints
Repair costs resulting from a seismic event
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20%
40%
40%
RC building average
20%
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62%
70%
Office
Hotel
Structural
8%
17% 13%
18%
48%
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Nonstructural
Contents
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Source: Taghavi S. and Miranda E.: “Seismic Performance and Loss Assessment of Nonstructural Building Components,” Proceedings of
7th National Conference on Earthquake Engineering, Boston, 2002.
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Hilti engineering for
earthquake
applications
Seismic fastening systems
Approved per new European regulations (ETAG 001 Annex E)
ETA seismic performance categories C1 and C2
Hilti HY 200 w / HIT-Z
Fast-curing bonded anchor.
No cleaning required with the innovative HIT-Z rod.
Hilti HST
Medium-duty mechanical anchor.
Designed to excel in cracked concrete.
Post-installed anchor accessory
Hilti dynamic set
Filling washer, conical washer, nut and lock-nut.
Doubles shear resistance and prevents loosening.
Approved per CSTB seismic pre-qualification
Post-installed structural rebar
Reinforced concrete design assumes that concrete has negligible tensile strength while
allowing for the design of rebar development length and avoiding brittle concrete failure, in
the following two situations:
• Transferring tensile loads from one bar to another (overlap splice)
• Development length of the tensile force in a bar beyond a node in equilibrium
Seismic structural rebar approval
French DTA approvals delivered by CSTB, a member of EOTA, recognizes Hilti HIT-RE
500-SD and HIT-HY 200 injectable mortars as products qualified for structural rebar applications in seismic zones. By applying engineering judgment, engineers can use this French
approval when designing seismic structural post-installed rebar connections.
ETA seismic performance category C1
Hilti HIT-RE500-SD
Slow curing anchor mortar.
Approved with threaded rods and other inserts.
Structural rebar applications
Hilti HUS
Highly efficient medium duty screw anchor.
Ideal for serial applications.
Hilti now tests new anchors according to
the updated seismic pre-qualification.
Find the latest seismically qualified anchor
at www.hilti.com/seismic.
Included in the DTAs
• The design bond strength fbd,seism of Hilti mortars considered for use in seismic zones
• Formatted data for design with Eurocode 2 and Eurocode 8
• Application limit information (e.g. transverse reinforcement, settings instructions)
DTA seismic approval
Hilti HIT-RE 500-SD
Slow-curing anchor mortar.
CSTB approval DTA 3/10-649 for seismic rebar
applications.
Design tools
Design is further simplified by Hilti’s own PROFIS software,
which allows users to design fastening systems and rebar connections easily and in accordance with the state-of-the art
seismic code framework.
Additionally, the printed version of the Fastening Technical
Manual (FTM) provides all technical data for both anchoring
and rebar connections.
PROFIS Anchor
PROFIS Rebar
FTM
Download the latest version of Hilti’s PROFIS software and the Fastening Technology Manual from www.hilti.com
Hilti engineering for
earthquake
applications
Post-installed anchoring
Post-installed rebar
Fastening structural and non-structural elements according to
new European regulations.
Injectable mortar and everything required for the safe installation
of concrete-to-concrete connections.
Rainscreen Façade
Direct fastening
Aluminum sub construction for light ventilated façade systems
Powder-actuated fastening solutions for metal decking, shear
walls and end lap connections.
Firestop
Installation systems
Solutions for pipe and cable penetrations through floors or
walls, and for fire rated joint seals.
Maximum safety assured by expert design and the use of Hilti
standard pre-design solutions.
Hilti. Outperform. Outlast.
Hilti Corporation I 9494 Schaan I Liechtenstein I P +423-234 2111 I F +423-234 2965 I www.hilti.com/seismic
Hilti = registered trademark of Hilti Corp., Schaan | W4194 0413 0-en | 1 Printed in Liechtenstein | © 2013 | Right of technical and programme changes reserved S. E. & O.
Everything you require for easy and reliable seismic
specifications.