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Hilti solution for earthquake applications

Hilti Corporation I 9494 Schaan I Liechtenstein I P +423-234 2111 I F +423-234 2965 I www.hilti.com/seismic

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Everything you require for easy and reliable seismic specifications.

Post-installed anchoring

Fastening structural and non-structural elements according to new European regulations.

Ventilated facade

Aluminum sub construction for light ventilated façade sys-tems, system tested for seismic applications

Firestop

Solutions for pipe and cable penetrations through floors or walls, and for fire rated joint seals to reduce post earthquake impacts.

Post-installed rebar

Injectable mortar and everything required for the safe installation of concrete-to-concrete connections.

Installation systems

Maximum safety assured by expert design and the use of Hilti standard pre-design solutions.

Structure detection

PS 250 and PS 1000 - Compact, cordless and complete sys-tem quickly operational and simple to operate to detect rebar in order not to hit them during drilling.


Hilti partner of specifyers in seismic design.

Hilti. Outperform. Outlast.

www.hilti.fr/sismique2

Seismic design and specification of seismic products is crucial in both structural and non-structural applications.

Seismic-relevant structural applicationsStructural 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.

Seismic retrofitting (e.g. bracings, shear reinforcement)

Structural steel element connections to concrete

Post-installed rebar connections

Shear wall fastenings

Seismic-relevant non-structural applicationsAnchors are often used to fasten non-structural components. Their design and selection is therefore crucial in terms of minimi-zing 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.

Secondary steel connections and fastenings for utilities

Equipments

Mechanical and electrical supports

Ventilated façade systems and curtain walls

Firestop cable and pipe penetrations and joints

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www.hilti.fr/sismique 3

Seismic design and specification of seismic products is crucial in both structural and non-structural applications.

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.

RC building average

Repair costs resulting from a seismic event

Nonstructural

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Structural


New European testing procedure for determining the seismic suitability of fasteningsThe seismic pre-qualification of anchors has been regulated since early 2013 in Europe following the release of ETAG 001 Annex E. 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:

ETA seismic category C1 – similar to U.S. pre-qualification procedure; only suitable for non-structural applications according to the EOTA TR045 recommendations

ETA seismic category C2 – arduous seismic crack movement tests qualify an anchor as suitable for more demanding structural and non-structural applications

New rating classifications for anchor perfor-mance under seismic load: C1 and C2

Structural applications

Acceleration (ag.S) Building importance II, III, IV

< 0.05g non-seismic

0.05g to 0.1gETA C2

> 0.1g

Non-structural applications

Acceleration (ag.S) Building importanceII, III

Building importanceIV

< 0.05g non-seismic

0.05g to 0.1g ETA C1ETA C2

> 0.1g ETA C2

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.

Adapt locally



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.

Contact them: - by phone at 01 30 12 65 01 (from 8h30 to 12h30 and from 13h30 to 17h00), - by fax at 01 30 12 52 40, - by e-mail at [email protected]

EOTA TR045 sets the fastening seismic design standard

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.

Three design options

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 designThe 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.

a2) Elastic designThe 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 anchorsThis design for ductile steel failure requires an anchor classified as ductile. Additionally, this ap-proach is applicable only for the tension component and some provisions require to be ob-served in order to ensure that the cause of failure is steel failure.

Post-installed anchor seismic design

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Design tools

Design is further simplified by Hilti’s own PROFIS software, which allows users to design fastening systems and rebar con-nections 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

Seismic fastening systems Approved per new European regulations (ETAG 001 Annex E)

Hilti now tests new anchors according to the updated seismic pre-qualification. Find the latest seismically qualified anchor at www.hilti.com/seismic.

ETA seismic categories C1 and C2

ETA seismic category C1

Post-installed anchor accessory

Hilti HUS Highly efficient medium duty screw anchor. Ideal for serial applications.

Hilti HIT-HY 200-A with 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.

Hilti dynamic set Filling washer, conical washer, nut and lock-nut. Doubles shear resistance and prevents loosening.

FTM

Hilti HIT-RE 500-SD with HIT-V rod or HIS-N sleeve Slow-curing bonded anchor.



PROFIS Rebar FTM

Structural rebar applicationsApproved per CSTB seismic pre-qualification

Post-installed structural rebarReinforced 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 approvalFrench DTA approvals delivered by CSTB, a member of EOTA, recognizes Hilti HIT-RE 500-SD 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.

Included in the DTAs• The design bond strength fbd,seism of Hilti mortar 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.

Dedicated web page for specifyers

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Recommanded firestop products in seismic

Fires following earthquakes represent a major risk, both for the safety of human lives and for the protection of facilities and assets.

After an earthquake, fire, smoke and water damage can cause severe problems including:

■ Damage to mechanical and electrical equipment

■ Breaking/leaks in pipe systems

■ Damage to electrical lines, including emergency equipment, lighting

■ Damaged communication networks

■ Gas leaks, creating an explosion risk

■ Blocked, unusable escape routes

Once these problems have been managed there will also be a need for repair, maintenance and reinspection.

Hilti seismic testsHilti has conducted extensive tests to determine the behavior of firestop products in a seismic event while taking fire integrity and smoke tightness issues in a post-earthquake environment into consideration. Test setup The quasi-static cyclic loads according to FEMA 461* protocol were applied directly on the penetrants, whereas the wall was fixed. Tests were carried out in x-direction (load in same direction as the penetrant), in y-direction (load perpendicular to the penetrant) and in z-direction (rotation with the center in the wall layer). Air/gas tightness was measured during the test with a pressure testing device to reach measurable conclusions about damages of the penetration seal. After the seismic test an additional firestop test was conducted to evaluate permeability of smoke and fire integrity of the relevant firestop system. ResultsSignificant factors that were measured: displacement (mm), movement force, pressure drop (Pa/min), start of pressure drop (mm), % pressure drop, plastic deformation of penetrant (kN), absolute pressure at start (Pa).Determining factors: flexibility-elasticity, adhesion, tightness, damage to penetrants, installation reliability.Outcome: recommendations for suitable and non-suitable firestop products, installation and design recommendations. * Federal Emergency Management Agency: Code for interim testing protocol for determining the seismic performance characteristics of structural and non-structural components.

Cable penetration

Firestop foam Hilti CFS-F FX Firestop acrylic sealant CFS-S ACR

Firestop block Hilti CFS-BL

Pipe penetration

Firestop collar Hilti CFS-C and CFS-C P

Joints

Firestop acrylic sealant CFS-S ACRFirestop silicone sealant CFS-S SIL

Firestop spray CFS-SP ACRFor joints applications and curtain walls



Sub-structures for ventilated facade has been tested in seismic

Brackets

Bracket MFT-MFI MFor sliding point

L Profile In Aluminium, thickness 2,0 mm and 2,5 mm

Bracket MFT-MFI LFor fixed point

Profiles

T Profile In Aluminium, thickness 2,0 mm and 2,5 mm

Ventilated facade present a risk of falling down in case of earthquake. The French state of the art defines a

seismic test method for the entire system.

A design method based on EN 1998-1-1 (Eurocode 8) for non structural elements is also defined

(document CSTB 3725 dated January 2013).

For more information, please contact our technical back office.

Required displacement

Gliders

Required displacement

Test setup Three tests are defined:

■ Parallelogram test: This test is performed to observe the behaviour of the system to follow the movement of the building on which it is fixed. The ventilated facade is installed on a rigid frame (3 000 x 3 000 mm) fixed on the bottom. The support is gradually deformed in its plane (parallelogram) by a static displacement applied at the head according to the cycles predefined. The maximum displacement is ± 60 mm. A visual control is done on fall elements, breakage or deformation of a component system.

■ Dynamic test: This test is to observe the behavior of the system when the support on which it is mounted is moving in its plane under the action a cyclic reciprocating motion imposed. The ventilated facade is installed on a rigid frame (3 000 x 3 000 mm) on gliders. Cycles of movements are applied around the frequency of the system. The maximum displacement is ± 60 mm. A visual control is done on fall elements, breakage or deformation of a component system.

■ Dynamic perpendicular test: This test is the same as the dynamci test with movement perpendilar to its plane

Parallelogram test

Dynamic test


Installation systems need to be designed specifically to resist of seismic loads

PipesFor pipes installation, the basic principle is that the fastenings have to be designed so that the horizontal seismic loads can be taken in addition to the gravity forces.To take horizontal forces, the pipe fastenings must either be designed to be sufficiently flexurally stiff, or have bracing that can transfer the horizontal forces (Fh) in compression. It must be ensured that horizontal loads can be taken transversely and longitudinally in relation to the pipe axis.

Horizontal seismic forces Fh,x transverse in relation to pipe axisHorizontal seismic forces Fh,y in direction of pipe axis

Standard fastening for single fastening of pipe (non seismic zones)

Seismic zones: Fastening with baseplate and HST stud anchorMethod of securing: 45° axial brace and transverse brace with rod and MQ3D-A.



Exemples of solutions

Standard fastening for channel installation (non seismic zones)

Seismic zones: Fastening with HST stud anchorStable U-support assembled from MQ installation channelsystem. No additional bracing necessary (depending on loadand distance below ceiling).

Seismic zones: Installation channel suspended with anchor rods and secured with longitudinal braces.Method of securing: 45° axial braces with MQ channel and MQP-45° brace shoe.

Design tools

Design is further simplified by Hilti PROFIS Installation, which helps users to design installation systems easily and in accordance with the state-of-the art code.

Additionally, the Installation systems catalogue provides all technical data for all products MM, MQ and MI.Download the latest version of Hilti PROFIS Installation and the technical data sheets from www.hilti.com.

PROFIS Installation Catalogue

Standard construction of raised floors (non seismic zones)

Standard construction of raised floors with support framing (non seismic zones)

Seismic zones: Bracing for floors without adjoining walls

Seismic zones: Bracing for floors with high loads

Channel installation Raised floor

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Documents

Everything you require for easy and reliable ... - hilti.es · PDF fileDesign is further simplified by Hilti’s own PROFIS software, ... Outcome: recommendations for suitable and