vallourec preonbox broschuere 12s eng · pdf filevallourec / preon box /p.3 the modular design...

PREON box

HIGH QUALITY, FLEXIBILITY AND SPEED IN INDUSTRIAL HALL CONSTRUCTION

A standard solution that sets standards:The PREON box principle

When we refer to our wide-spanning coverage, we mean it quite literally in terms of the PREON box. This in-house developed and patented roof frame sys-tem ensures the realisation of unsup-ported spans of up to 100 metres and more. The high level of standardisation enhances speed, quality and perfor- mance. Then, regardless of a building’s size, there should be no room for com-promise.

The challenges facing the PREON box developers were quite clear: Planning must be a quick and simple process. And the technical outlay for production, transport and assembly must be kept to a minimum. The numerous requirements were accommodated with a wealth of know-how and a remarkable degree of engineering ingenuity, resulting in a patented solution that sets new standards in industrial hall construction.

Vallourec: Tradition meets innovationVallourec is a world leader in the pro-duction of seamless, hot-rolled tubes for a broad spectrum of engineering applications. A key innovation in this context is the hall system PREON box. Based on this development, the idea was expanded and elaborated. Our planning software, for instance, was developed specifically for the PREON box in collaboration with the engineers from Feldmann + Weynand.

The benchmark in industrial hall constructionSometimes big is just better. Nobody would consider parking a giant Airbus A380 with a wingspan of almost 80 metres inside a hangar full of columns. Oth- er buildings, such as logistics facilities, warehouses, shopping centres, exhibi-tion halls and leisure centres, can also benefit from the PREON box and the large unsupported spans and high load bearing capacities it offers.

Conventionalframework structure

PREON box

Hall span

0 m 30 m 100 m

Vallourec / PREON box /p.3

The modular design

Each PREON box roof truss consists of three elements: Two identical end sec-tions and a middle section. All the com-ponents have square or rectangular top and bottom cords. And since all the parts terminate in a headplate, simple threaded joints ensure fast and efficient on-site assembly.

Optimised: The end sectionsThe end sections consist of roof trusses, whose length and geometry are cal- culated precisely in line with structural and economic aspects. The only material used is our MSH sections.

Variable: The middle sectionThe middle section is a frame-type Vier-endeel girder. Adaptation of the post distances has also been optimised. The length is freely selectable and offers the best possible flexibility with regard to the overall length of the trusses. Once again, the basis for success is our MSH section.

End sections: Traditional roof trusses made from MSH sections

Middle section: Vierendeel girder of variable length, made from MSH sections

The MSH section

Our MSH sections are an integral part of every PREON box solution. They are hot-rolled and a benchmark for our long-term quality that is acknowledged around the globe. And there are many more convincing reasons to choose the: Outstanding reliability thanks to steel grade S355J2H conforming

to EN 10 210 High load bearing capacity Ideal corrosion protection Ease of processing Aesthetic appearance

p.4 / Vallourec / PREON box

The perfect start – using the PREON box planning software

Each project boasts not only high-quality S355J2H grade steel, but also a wealth of know-how. And technical know-how, for example, is also at the heart of our planning software. This en-sures your project is tailored to your individual needs during the planning stage long before construction com-mences. The best start for your project prior to realisation.

The advantagesProviding effective and efficient plan-ning is all about paying attention to key details. Your wishes and preferences are integrated directly into the project without extensive lead times or other delays, allowing the accurate simulation of realistic scenarios. As a result of an iterative calculation, you receive a cost- effective structural solution as well as a reliable cost estimate.

Needless to say, the availability of rele-vant materials is always taken into ac-count. Necessary modifications can be made directly and immediately produce an adjusted result.

Highly standardised, yet individual enough to match your expectations

The benefits of the PREON box

Faster: Process Faster quotation process thanks to planning software

Industrial production for fast and simple assembly, and the shortest possible construction period

Reduced cutting and welding de-mands

Just-in-time delivery without de-lays or holdups in the supply of steel (production at our own steel and tube mills)

Planning software saves up to 20% on materials and cuts the process time by up to 30% com-pared to conventional project execution

Greater: Flexibility Freely selectable ground plan de-sign; the PREON box adapts to your needs

Easy adaptation of the middle section in response to structural chal-lenges

Effective spanning of large dis-tances from 30 metres to over 100 metres

Planning, handling and assembly all from a single source upon re-quest

Higher: Quality Highest load-bearing capacity thanks to hot-rolled MSH sections

Long-term, durable quality (long life cycle)

Patented, modular solution Comprehensive quality management

Conforms to all applicable standards

Pleasing aesthetics

Larger: Cost savings Cost-effective realisation thanks to standardised products

Less material costs due to weight reduction

Reduced cutting and welding demands

Iterative calculation and efficient measurement algorithms through the planning software ensure opti-mum utilisation of materials


The five strong pillars for cost-effective and sustainable construction

Cost-effective, fast and of the highest quality. Our clients have a clear under-standing of how their project should evolve. We meet their demands with a clear strategy that rests on five pillars of sustainable and cost-effective con-struction.

A successful project begins with in-depth consultation. If requested, design and structural engineers, as well as oth-er experts, will provide you with theoreti-cal and practical advice from start to fin-ish.

As a global market leader we manufac-ture products at our own steel and tube mills throughout Europe. This helps to prevent delays and holdups. What is more, all tube production stages take place under industrial conditions at our plants. This ensures optimum condi-tions for subsequent work on site, en-hancing cost, time and quality objec-tives.

Our dedicated team of production and project managers and project supervi-sors work hand in hand, guaranteeing leading-edge production processes at our plants. And since this know-how extends beyond the factory gate, you can be sure that all the processes are coordinated perfectly. You therefore profit from quick and simple assembly.

Additional columns are simply not re-quired with the PREON box. We are covered by a number of certifications which we – from production to installa-tion – naturally comply with as standard procedure. The comprehensive monitor-ing of all processes ensures the highest quality and full compliance to dead-lines.

Inconsistencies are not an option. This applies to both the accuracy of the PREON box elements and the agreed deadlines. We therefore view construc-tion logistics as an integral part of our reliability. This is the only way to guar-antee adherence to very tight produc-tion and construction schedules, and to profit from the finished structure at the earliest possible date. We can proudly claim that all projects to date have been completed, often against all expecta-tion, ahead of schedule.

PlanningSuggestions instead of corrections: Careful planning

ProductionEverything from a single source:Industrial production

ExecutionConstruction site advantages: Precise execution

Quality assuranceFrom start to finish: Seamless quality assurance

LogisticsA new era: Mature logistics


It is always best to ask someone who knows best:An expert commentary

Companies will, of course, lay claim to many achievements in pursuit of suc-cess. Fortunately, we can back up our claims with solid results and expert reports. For example, from Dr. Stefan Herion, who is an expert for hollow sec-tions and hollow section designs, and the managing director of the Karlsruhe Competence Centre for Tubes and Hol-low Sections. He also works at the Karlsruhe Institute of Technology (KIT) as a research officer and coordinates specific research projects in this field.

Dr. Stefan Herion: Roof trusses are girders subject to bending that have to take up transverse forces and moments resulting from their own weight and roof loads. With increasing spans, plane lat-tice girders capable of transmitting the loads via a system of tension and com-pression bars are therefore mainly used. In addition to their static load advantages, trusses are superior to all other structures in terms of weight, produc-tion costs and aesthetics.

By comparison, Vierendeel girders have the advantage of a greater range of spans and simpler production. Straight sections and lower dimensional accura-cy are sufficient for Vierendeel girders. However, Vierendeel girders are less ca-pable of transmitting shear forces. Therefore, with the PREON box girder the Vierendeel section is only applied in the middle area exposed to lower shear forces (Fig. 1).

Another advantage of the Vierendeel girder is that the distances between the posts can be adapted to the actual load, which has a particularly positive effect on moment transfer. Consequent-ly, the version with variable post dis-tances in Fig. 2 shows a lower moment Y < X than the version with a constant distance between posts in Fig. 3.

An extremely cost-effective and versatile

solution

„

”

Fig. 1: Transverse force distribution across a single-span girder

Fig. 2: Moment distribution in 06/06 with a variable distance between posts

Fig. 3: Moment distribution in 06/06 with a constant distance between posts

Perfectly combined: Roof trusses and Vierendeel girders

Dr. Stefan Herion: By using a Vier- endeel girder with a variable post dis-tance in the middle section of the girder and a plane lattice at both ends of the girder, the PREON box girder combines the advantages of both systems. This re-sults in a structure which is very efficient thanks to its adaptation to the distribu-tion forces and its large range of spans.

PREON box represents an extremely cost-effective and versatile solution for industrial building construction.

Dr. Stefan Herion, Karlsruhe Institute of Technology (KIT)

Vierendeel section


DIN and ISO instead of IFS, ANDS or BUTS: The standards

Hot-rolled and cold-rolled sections have completely different structural character-istics, which are taken into account in the European standards. We only use our own hot-rolled sections as they offer outstanding welding characteristics and greater load bearing capacity. The long-term quality of these sections is recog-nized worldwide. And since a material is only as good as the production process-es, all Vallourec production facilities are certified to ISO 9001. You can therefore rely on Vallourec quality management and on the compliance of it products with all aspects of the relevant standards – no ifs, ands or buts about it.

➜ MSH SECTIONS:• EN 10 210-1: Hot finished structural hol-

low sections of non-alloy and fine grain steels Part 1: Technical delivery conditions

• EN 10 210-2: Hot finished structural hol-low sections of non-alloy and fine grain steels Part 2: Tolerances, dimensions and sec-tional properties

➜ WELDING:

Qualification certificate in accordance with DIN 18 800, Part 7

➜ FIRE SAFETY: With regard to fire safety, the industrial building guideline and Eurocode 1 apply

➜ DESIGN:• Eurocode 1: Actions on structures

Part 1-1: General actions (densities, self-weight and imposed loads for buildings) German version EN 1991-1-1:2010

• Eurocode 1: Actions on structures Part 1-2: General actions (actions on structures exposed to fire) German version EN 1991-1-2:2010

• Eurocode 1: Actions on structures Part 1-3: General actions (snow loads)German version EN 1991-1-3:2010

• Eurocode 1: Actions on structures Part 1-4: General actions (wind actions)German version EN 1991-1-4:2010

• Eurocode 1: Actions on structures Part 1-5: General actions (thermal actions) German version EN 1991-1-5:2010

• Eurocode 1: Actions on structures Part 1-6: General actions (actions during execution) German version EN 1991-1-6:2010

• Eurocode 3: Design of steel structures Part 1-1: General rules and rules for buildings German version EN 1993-1-1:2010

• Eurocode 3: Design of steel structures Part 1-8: Design of joints German version EN 1993-1-8:2010

• Eurocode 8: Design of structures for earthquake resistance Part 1: General rules, seismic actions and rules for buildings German version EN 1998-1:2010 Inclusive of national annexes in all cases.

Applicable standards and quality standards for PREON box


Length: 154 m Span: 39 m Ground area: 6,000 m2

Ridge height: 25.6 m Eaves height: 20.7 m Hollow section tonnage: 564 t Year of construction: 2006



PREON box in practice

Production shop, steel industry, St. Saulve, France

Production shop, steel industry, Düsseldorf, Germany

Production shop, mechanical engineering industry, Duisburg, Germany


Ridge height: 15 m Eaves height: 14.2 m Hollow section tonnage: 260 t Year of construction: 2006


Length: 144 m / bay Span: 30 m / bay Ground area: 13,000 m2



Ridge height: 17 m Eaves height: 16 m Hollow section tonnage: 57 t Year of construction: 2007

Three-bay production shop, steel industry, Changhzou, China

Warehouse, Witten, Germany

Production shop, metal- working industry, Hohenlimburg, Germany






Length: 1 x 270 m / 1 x 189 m Span: 1 x 45 m / 1 x 35 m Ground area: 19,100 m2

Ridge height: 22.5 m Eaves height: 17 m Hollow section tonnage: 1,870 t Year of construction: 2007

Production shop, plant engineering, Mönchenglad-bach, Germany

Two-bay production shop, steel industry, St. Saulve, France

Seven-bay warehouse and logistics building, steel trade, Düsseldorf, Germany

Length: 128 m / bay Span: 32 m / bay Ground area: 29,000 m2

Ridge height: 14 m Eaves height: 13.7 m Hollow section tonnage: 1,150 t Year of construction: 2008



Ridge height: 28 m Eaves height: 21.3 m Hollow section tonnage: 1,400 t Year of construction: 2009

Length: 700 m / bay Span: 2 x 35 m / 5 x 50 m Ground area: 130,000 m2

Ridge height: 33.5 m Eaves height: 27 m Hollow section tonnage: ~ 15,000 t Year of construction: 2011

Production shop, aircraft construction, Saint-Nazaire, France

Seven-bay production shop, steel industry, Jeceaba, Brazil

Ten-bay production shop, Changhzou, China

Length: 327 m / 205 m / 60 m Span: 5 x 24 m / 1 x 40 m / 1 x 42 m1 x 22 m / 1 x 18 m / 1 x 16 m

Ground area: 43,000 m2

Ridge height: 14 m / 28.5 m / 11.5 m Eaves height: 13 m / 27 m / 10.5 m Hollow section tonnage: ~ 3,400 t Year of construction: 2012

FLEXIBLE TO THE END: PLEASE GIVE US A CALL, SEND US AN EMAIL OR DROP BY...

WE LOOK FORWARD TO HEARING FROM YOU.

Vallourec Deutschland GmbH

Theodorstr. 109

40472 Düsseldorf, Germany

Phone +49 (211) 960-3594

Fax +49 (211) 960-143594

[email protected]

www.vallourec.com

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