İskeleler İçin İş güvenliği-
DESCRIPTION
Ankara Congresium Angora Salonları'nda 23 Ekim 2014 Perşembe günü gerçekleşen 7. İGY-İş, Güvenlik Yaşam Zirvesi'nde Layher İskele Yönetim Direktörü Helmut Kreller, İskeleler için İş Güvenliği konulu bir sunum yaptı.TRANSCRIPT
Occupational
safety related
to Scaffolds
Ankara, 23.10.2014
Layher | 2
OCCUPATIONAL SAFETY RELATED TO SCAFFOLDS
Dr. Helmut Kreller - Managing Director of Layher GmbH & Co.KG, Germany
• Chairman of the Subgroup “German Producers” at the German Scaffolding Association
• Member of the “Committee of Experts” at “German Institute for Building Technology”
• Former member of CEN/TC 53 – European Standards EN12810 and EN 12811
Topics:
Brief introduction of company Layher
Some pictures of Layher scaffolding applications worldwide
German/European normative requirements for scaffolds
Approval procedure – Examples how to fulfil requirements
Layher | 3
LAYHER – WORLD MARKET LEADER IN SYSTEM SCAFFOLD
1945 Wilhelm Layher founds the company nearby
Stuttgart
2014 Still family owned company in 3rd Generation
Production only in Germany!
2 km
Headquarters Eibensbach 250,000 m² factory premises – steel parts
Plant 2 Gueglingen 68,000 m² factory premises – aluminium & wooden parts
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TWO PRINCIPLE SYSTEMS – UNLIMITED APPLICATIONS
SPEEDYSCAF –
frame system for
façade scaffolds
ALLROUND SYSTEM –
modular system for industrial use
Completed by a range of supplements (roofs, cladding, stairs etc.)
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Branches in 37 countries and more than 50 additional trading contacts worldwide:
LAYHER WORLDWIDE
EUROPE Austria, Belgium, Bulgaria, Denmark, France, Greece, Hungary,
Italy, Kazakhstan, Lithuania, the Netherlands, Norway, Poland, Romania,
Russia, Serbia, Spain, Sweden, Switzerland, Turkey, UK
SOUTH AMERICA Argentina, Brazil, Chile,
Colombia, Ecuador, Peru
AFRICA Morocco, South Africa
NORTH AMERICA USA (Alabama, Florida, Maryland,
Texas), Canada (Alberta), Mexico
OCEANIA Australia (New South Wales,
Queensland, Western Australia),
New Zealand
ASIA India, Singapore
MIDDLE EAST United Arab Emirates
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LAYHER PRODUCTION OUTPUT 2013
Annual loading in Eibensbach
More than 140,000 t scaffolding material
7,300 trucks (à 18 t) = up to 67 trucks daily
900 containers are sent overseas
Layher’s efficiency is not only reflected in its products,
but also in some impressive production figures.
Annual processing
More than 21,000,000 m steel tubes
= Flight distance Frankfurt – Rio de Janeiro – round-trip
More than 1,700,000 m² scaffolding decks
= 275 football pitches
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AWARDS AND CERTIFICATES
Innovation-Award
Construmat 2011 Spanien
Innovation-Award
BATIMAT 2011 / Frankreich
Certificate for Reduction of CO2
Emission, signed by
German Minister for Environment
Award for Innovation und Quality
Baden-Württemberg
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Swiss, Bern, Wankdorf City, facade scaffold
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PRODUKTGRUPPE ALLROUND
Italien, Bologna, Basilika San Petronio
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Swiss, Zurich, zoo, new house for elephants, dome shaped roof
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PRODUKTGRUPPE ALLROUND
Finland, Oulu, water tower renovation
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PRODUKTGRUPPE ALLROUND
England, power-lining
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PRODUKTGRUPPE ALLROUND
Germany, Bremerhaven, Lloyd Wharf, ship repair
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PRODUKTGRUPPE
Argentina, airplane maintenance dock
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Deutschland, Mylau, Göltzschtal-bridge renovation
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Italy, renovation of bridges
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PRODUKTGRUPPE ALLROUND
Luxemburg, street crossing bridge
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PRODUKTGRUPPE ALLROUND
Kasachstan, Astana, Abu Dhabi Tower
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WHOLE RANGE OF PRODUCTS TO SURROUND SCAFFOLDING
STRUCTURES
Berlin “Gedächtniskirche”
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PRODUKTGRUPPE ALLROUND
USA, Florida, Kennedy Space Center
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Industrial facilities, power plants, refineries
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PRODUKTGRUPPE ALLROUND
Finland, Kuopio, Tikkalansaari-bridge, shoring scaffold
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PRODUKTGRUPPE ALLROUND
Germany, Dillingen, steel casting line, access and shoring scaffold
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Sochi, Olympic winter games 2014
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Australia, Gold coast, 3.200 seats stand
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Precondition for a safe –and efficient-
work during construction
is a scaffold with high quality standard
and proofed stability.
What is the procedure to generate
such a scaffold?
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MAIN GERMAN NORMATIVE REQUIREMENTS ON SCAFFOLDS
According to the European Act 305/2011 scaffolds are no building product →
they belong to the non-harmonized area, scaffolds underlie national regulations.
Therefore the European Codes DIN EN 12810 – façade scaffolds made by
prefabricated parts and DIN EN 12811 - working scaffolds has been worked
out on a “voluntary” basis and transferred into national law - partly with additional
regulations. (Germany: working & protection scaffolds)
In Germany each federal state (16) has an own “Landesbauordnung” (state building
regulation) which state that scaffolds are “building structures”, the stability against
collapse has to be approved by:
a) A General Building Supervisory Approval (“Zulassung”) or a
b) Static calculation for every single application (time consuming)
The execution is checked by the Governmental Building Inspection
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MAIN GERMAN NORMATIVE REQUIREMENTS ON SCAFFOLDS
The German federal states transferred the responsibility for granting General
Approvals to the „German Institute for Building Technology“ DIBt in Berlin.
Besides statically requirements there are additional occupational challenges:
Since scaffolds are also technical working equipment according to the “Industrial
Safety Regulations” BetrSichV and the “Equipment and Product Safety Law” GPSG,
they have to fulfill also the requirements of that bylaws.
In addition, inspectors of the “Building Trade Association” check the compliance with
this regulations.
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SCAFFOLDING APPROVALS IN GERMANY (IN ACCORDANCE WITH EN 12810 AND 12811)
According to the German Law
for Building and Construction
System Scaffolds need an official Approval
Procedure:
German Institute for Structural Technology
(DIBt, Berlin)
This is the only body in Germany that officially
grants Approvals
General Building Supervisory Approval
E & D Manual is a mandatory part of the approval!
Scaffold Manufacturer
Has to provide comprehensive documents:
( Static calculations, test reports, expert opinions )
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By Conformity Check
Testing of the scaffold components:
• a first extensive component test, carried out
by an independent external supervision
• self-controlled production of components
• regular external supervision (carried out by an independent institute)
Production The compliance of scaffold components
with the approval specifications
has to be proven (for each production site separately)
Conformity certificate
HOW?
If everything is fulfilled
FORMAL PROCEDURE AFTER GETTING THE APPROVAL
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Approval (document)
The approval requires: Inspection certificates for all semi- finished products (tubes, sheets,…)
Inspection certificates
according to EN 10204
are required.
Inspection certificates
confirm material
specifications; e. g.
higher yield stress of
320 N/mm2.
Layher asks suppliers
for material certificates
for each charge.
Content of the approval EXAMPLES OF APPROVAL REGULATIONS I
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Inspection Certificate:
Round Tube 48.3 x 3.2
with increased yield stress
fy,k = 320 N/mm2
Additionally internal tests for each
material delivery are worked out
ADDITIONAL INTERNAL MATERIAL TESTS
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Approval (document)
The approval specifies marking of each scaffolding part with:
Identifier of material supplier, producer (Layher), month or day of
production, approval number, Ü – sign for “conformity”
Content of the approval EXAMPLES OF APPROVAL REGULATIONS II
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The track from the approval to the scaffold component
Ü 64 (shortcut) is the mark of the approval Z-8.22-64 for Layher Allround scaffold
Allround Rosette Allround wedge Allround ledger wedge head
EXAMPLES FOR MARKING OF SCAFFOLDING PARTS
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Quality assurance in production
Steel deck
Day Year Machine number
Automated date embossing on machines:
• Welding of end profiles
• Welding of ledgers
• Welding of standards
• Crimping of spigots
• Lattice girder/standard
• Diagonals machine
• Welding of base collars
EXAMPLES FOR MARKING OF SCAFFOLDING PARTS
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Further requirements set in the approval FURTHER REQUIREMENTS FOR PRODUCING STEEL PARTS
Certificates for welding according to
DIN 18800-7 (Factory Requirement)
The factory and the workers must be proven
acc. to the standard to be allowed to produce
welded constructions in steel and aluminium.
This includes:
- regular tests and certificates for welders
- nomination of a responsible (and skilled)
supervisor for welding
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CONTINUOUS TESTING DURING PRODUCTION
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All approved decks must have passed the drop test acc. to EN 12810-2:
A 100 kg- sphere drops down to the deck from 2.5m height
The deck must be able to hold the sphere !
Two drop positions must be tested:
middle of the deck and at the end support.
IMPACT TESTS FOR DECKS
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What are the Requirements on a “safe” Scaffold?
What does that mean?
High quality of each single scaffolding component (exact measurement, no risk of injury during handling and use)
“Self-explanatory” erection sequences – easy to train (even unskilled workers cannot do things wrong)
Versatile and adaptable to given building geometries (no uncovered holes, no fall traps)
Sturdy design + hot dip galvanizing = long life time (> 30 years!)
Low maintenance (robust in use, no losable parts)
The scaffolding system must supply a maximum on
safety to workers during erection, use and dismantling
SUMMARY
Thank you very much
for your attention!
Safety and efficiency
are not a contradiction
More efficiency –
through safety