scope Successful construction with PERI Magazine for formwork and scaffolding 1/2004 edition

Transcription

1 scope For small and large construction sites PERI has the solution Safe and cost-effective Magazine for formwork and scaffolding 1/2004 edition Page 2 PERI at the bauma 2004 Look back at a record-breaking fair Page 6 On-site prefabricated component production: accurate and best concrete quality Toll station for the Millau Bridge, France Page 10 Building for the Olympic Games: fast system equipment for meeting tight schedules Athens, Greece Page 12 Successful tunnel construction: Tunnel By-Pass Flueelen, Switzerland and S1 Rannersdorf Tunnel, Austria Page 16 Coordinated formwork and scaffolding use for complex construction progress La Scala Opera House, Milan, Italy Successful construction with PERI

2 A look back at a record-breaking fair PERI at the bauma 2004 With a total exhibition area of about 500,000 m 2 and over 2,800 registered exhibitors from 47 countries, the bauma in Munich 2004 being the fiftieth anniversary of its founding has become the world s biggest and most important construction trade fair. Around 415,000 visitors from 171 countries attended this year s fair, hosted as always in the Bavarian state capital. There were increased numbers from European Union acceding nations, southern and eastern Europe, Central Asia and the United Arab Emirates. In the PERI marquee with close to 2,900 m 2 exhibition space, numerous new contacts were established as well as strengthening ties with existing customers. Indications of just how good business at the bauma would be, appeared right at the start of the fair and continued strongly throughout the seven days with the final signing of various contracts. In part, more than 10,000 visitors a day were welcomed to the PERI stand and, compared to the previous fair in 2001, the total number of visitors to the PERI hall increased by around 15 %. Cover photo: PERI exhibition stand at bauma 2004 on the open-air area. Increase efficiency and safety with innovative PERI products Wall Formwork 1 PERI TRIO Platform Completely pre-assembled working platform for the TRIO panel formwork system. 2 PERI TRIO Bulkhead Formwork TS The universal solution for wall bulkhead formwork with reinforcement and sealing. 3 TRIO-H One-man formwork with ties inserted from one side now available in two heights: TRIO-H 270 and TRIO-H 360 as well as the TRIO-H corner solution the new formwork system for corners without ties. 4 TRIO Shaft Element TSE for fast moving of complete internal shaft formwork units. 5 VARIO SST fitting ties from one side Installing ties from one side without spacer tube for girder wall formwork. 6 VARIO GT 24 Platforms Completely pre-assembled working platforms for the VARIO girder formwork system. 7 RUNDFLEX PLUS Fast circular formwork for fulfilling architectural concrete demands. Column Formwork 8 VARIO QUATTRO Girder column formwork for variable cross-sections no re-assembly necessary. Climbing Scaffold 9 PERI ASG System-compatible platforms for tight working conditions. 10 PERI CPP Climbing Protection Panel High degree of job safety through climbable protection panel on building edges for use in skeleton construction. Falsework 11 MULTIPROP Connector SRU For easy falsework adjustment on inclining roof areas. 12 Handrail Holder SRU/SRZ Quickly assembled safety barriers for bridge formwork and slab edge tables. 13 PEP 10 Light, easy to handle slab props with complementary accessories; also for lightweight slabs. 2

3 Expert advisors and specialists from 40 PERI subsidiaries were on hand to answer in detail and provide information about the PERI systems, software and PERI services. For accessing the open-air area via the South Entrance, a m wide PERI bridge, comprising of HD system components, safely and conveniently carried visitors to the exhibition. Dr. Otto Wiesheu, Bavarian Minister of State for Economic Affairs, Transport and Technology, in discussion with Artur Schwoerer, PERI founder and owner. Dr. Wiesheu showed great interest in the PERI systems which are developed and produced at the company headquarters in Weissenhorn/Bavaria. Marquee entrance halls consisting of PERI system components and the PERI LGS girder system, housed the cash desks and provided a favourable first impression of the versatile PERI product programme for visitors as they arrived. Two temporary bridges, made of PERI UP system elements, enabled over 400,000 visitors to cross a four-lane road and access the northern open-air exhibition area. 14 PERI UP Falsework Flexible shoring with PERI UP Rosett also for bridge construction. 15 Aluminium Girder MPB 24 Load-bearing main beam suitable for the MULTIPROP system. Slab Formwork 17 Handrail Post RGP 120 For securing slab edges, parapets and stairways always the right choice. 18 PERI Table Lift For fast forming and easy moving transverse and longitudinally of slab tables. Special Formwork PERI UP Scaffolding 20 PERI PUBLIC Temporary system stairways. 21 PERI LGS Lattice Girder System Lattice framework system for bridges and roofs. Architectural Concrete 22 PERI Architectural Concrete Exhibition PERI Know-how providing solutions for your architectural concrete requirements. 16 PERI SKYTABLE The variable large-sized table up to 150 m 2 moved quickly with one crane lift. 19 PERI Bridge Construction Expertise and Know-How Falsework and formwork planned and delivered from one source. 3

4 Numerous new products at the bauma 2004 in Munich PERI presents its latest innovations in formwork and scaffolding technology PERI certainly lived up to its role as the world s leading producer of formwork and scaffolding. Apart from exhibiting proven products, numerous interesting innovations were presented which bring time, safety and cost benefits to the users. Here are a selection. The benefits of the PERI systems were highlighted with practical demonstrations. Example: assembly of the SKYDECK aluminium panel slab formwork which provides unequalled fast shuttering times through its regulated order of assembly props, longitudinal girder and then panel. PERI Table Lift With an electric drive function and hydraulic lifting equipment, the compact table lift allows non-tiring setting and stripping of formwork as well as easy moving of slab tables. TRIO Shaft Formwork For the construction of shafts, the new TRIO shaft formwork provides considerable time advantages. The complete internal formwork is moved using only one crane lift. VARIO QUATTRO The foldable girder column formwork for cross-sections from 20/20 cm to 120/120 cm in 5 cm increments up to 6.00 m heights, reduces crane times through the possibility of requiring only one lift. It allows fast concreting cycles with a permissible fresh concrete pressure of 100 kn/m 2. 4

5 PERI SKYTABLE is a slab table system for areas up to 150 m 2. SKYTABLE is comprised of few system components, using the well-known MULTIPROP slab props. PERI has developed a new method for moving these large slab tables the crane lift and chain hoist procedure pulls the SKYTABLE automatically out of the building. Here, site personnel work safely from the slab edge and not on the table. PERI TRIO-H is the fastest version from the TRIO panel formwork programme. With TRIO-H, only one tie position is required for concreting heights of 3.00 m. All ties can be handled from one side only which saves time and, due to their conical form, need no spacer tubes. TRIO-H elements up to 5.40 m long are equipped with integrated working platforms and pushpull props. No tie rods are required for inner and outer corner panels which reduces the amount of work. In the scaffolding branch as well, PERI could present its latest developments. The PERI ARENA professional grandstand system guarantees the best possible viewing facilities with different slopes of 11 and 22 and optimally utilises the available erection area providing generous access gangways and comfortable seating a grandstand with a test certificate ensuring safety at all times. Or the PERI PUBLIC, the stair system which fully complies with FIFA and Olympic Committee requirements through its high load capacity. PERI RUNDFLEX Plus is not simply an improvement on the existing PERI RUNDFLEX but is a new development. The system is characterised by the following benefits: the curvature corresponds to the required radius throughout the whole area and with great accuracy. Element heights are smaller which means less transport volumes. Using RUNDFLEX Plus results in high quality concrete surfaces compared to previous circular formwork systems. The RUNDFLEX Plus is equipped with working platforms for internal and external formwork which easily adjust to changes in the radii. New! HANDBOOK 2005 Formwork HANDBOOK 2005 Scaffolding Designed to help construction and scaffolding specialists. To obtain your free copies, fax: /

6 Toll station for the Millau Bridge, France On-site production of prefabricated parts: Dimensional accuracy and high concrete quality For many years it has been common practice in France for private operating companies to finance most of the traffic network. This is also true for the building of the century, the Viaduc de Millau, whose world-record bridge piers were built using PERI formwork systems. The French state has assigned the right of use to the Eiffage construction group for a period of 75 years. It is only after this period that the ownership of the bridge and the related rights will pass to the French state. The Gare de Péage, the bridge toll station, is situated about four kilometres north of the bridge. The individual toll booths are roofed by a 98 x 28 m large concrete shell whose load is carried by only four axes of a slender steel structure. A total of 54 differently shaped individual segments, which are 0.60 to 2.00 m high and twisted, form the actual concrete roof. The segments are prefabricated and then bolted together. After being placed in their final position, they are pre-tensioned by means of tensioning strands and then permanently connected to each other. PERI was responsible for the planning, manufacturing and delivery of the formwork that facilitated the cost-effective prefabrication of the different individual segments with weights of up to 65 t directly on the building site. The PERI engineers realised a practical concept that made it possible to regularly complete one segment every three days. The main features of the high-quality segments are the dimensional accuracy and excellent concrete finish. On-site factory for producing the prefabricated roof segments of up to 65 t using PERI s special steel formwork solution and stationary concrete mixing plant. 6

7 This graphic illustrates the complicated shape of the curved and twisted roof. The dead weight of about 2,500 t is carried via four axes of slender steel props. In order to obtain an accurate transition between the individual segments, each segment is directly concreted to the segment in front. The bases of the latticework steel structure are foldable on one side, hydraulically-operated and make it possible to move out the finished segments. The steel fibres mixed to the used Ceracem concrete, which was developed by Eiffage and the German company, Sika, also make it possible to carry tension force components. Thus, the roof shell could be built with its curved and twisted design. Jean-Marie Dolo, Technical Director: The commonly designed formwork for prefabricated parts for the roof units delivered by PERI fulfilled the high demands on the architectural concrete quality and ensured that the geometry of the different segments could be followed. The work cycle of two days per standard unit could also be complied with without any problems. Viaduc de Millau in April The world-record bridge piers (max. height of the roadway, 245 m) completed with PERI ACS self-climbing technology in November 2003 support the almost completed road superstructure. Until construction work is completely finished, i.e. all the approximately 95 m high steel pylons are erected and the tension cables are installed, the temporary steel piers still remain in place. Contractor: Eiffage TP, Neuilly-sur-Marne, France Architecture: Herbert T.S. Field service: PERI Weissenhorn Segment production corresponds to the later installation and assembly sequence. B B A A B A B A Operational chart The latticework steel structure allows production of the prefabricated segments without any tie points. Two segments are manufactured, one after the other, to achieve an exact fit. After striking, the upper segment (B) is suspended on the latticework structure and separated by 10 cm from the lower segment (A), which was concreted earlier, by hydraulically lifting it (eight hydraulic climbing devices ACS 100). Segment (A) is moved on the carriage to the foldable bases. Segment (B) is then lowered. The bases are then hydraulically folded upwards and segment (A) is moved out on the carriage. The bases are folded back again, the formwork for segment (C) is erected and segment (C) is manufactured on segment (B). 7

8 European Patent Office, Munich More room for ideas with system equipment for all requirements Due to the increased number of member states, the European Patent Office (EPO) urgently needs more space to be able to manage the expected flood of registrations for new inventions. Contractor: Dipl. Ing. W. Markgraf GmbH & Co.KG, Munich Field service: PERI Munich Because of the three-storey high opening office building, extensive supporting measures of the slabs and walls above were necessary. The loads were bundled by means of steel girders and transfered through the building into the floor slab via HD props. The SKYDECK formwork on MULTIPROP towers was used for the slab that was up to 10 m high. According to the requirements, Apart from the SKYDECK system, MULTIFLEX slab formwork and slab tables were also used Béatrice Gollong, Site Manager: We are very satisfied with the PERI systems. Besides the SKYDECK slab formwork, slab tables and the TRIO panels, we used the HD heavy-duty system to such a large extent for the first time. The simple handling of the individual prop segments, however, contributed to a quick and trouble-free assembly process. 8 The right formwork system for all requirements! Diverse tasks made it necessary to use different slab formwork systems: SKYDECK on MULTIPROP props, MULTIFLEX on steel walers, with slab tables provided by the contractors on top of these. Assembled side by side, PERI HD 200 heavy-duty props carry the enormous loads of the finished building into the base plate. The two aluminium sections accelerated erection and striking in the difficult to access rooms on the lower storeys.

9 New Staff Restaurant, Biberach, Germany Accurately designed and delivered pre-assembled Formwork for an extraordinary building core The VARIO GT 24 elements were pre-assembled as transportable units and easily put together on site. With this design, Kauffmann & Theilig were awarded first prize in the architectural competition organised by the client. The 9.20 m high core 2 was constructed in two casting segments. Through accurate working methods and concreting platforms by the customer, a high level of safety was achieved. The roof construction on this very unusual looking staff restaurant for a pharmaceutical company is carried by flat-top pyramidshaped cores. These serve as a stairwell, foyer, cloakroom, dirty dishes collection point and storing point for sanitary equipment. The plan view of the cores showed different side lengths and varying wall inclinations on the rising walls. The asymmetrical position of the virtual pyramid apexes, and the resulting edges of the individual wall areas, produced technically complex construction requirements. In addition, other specifications such as a uniform arrangement of formwork panel joins and cavity-free architectural concrete surfaces also had to be taken into consideration. For core 1, PERI supplied preassembled formwork elements to the construction site, including filler plates and special components for the tensioning of the edges, precisely matching the areas to be formed. The close cooperation between the experienced site team and client resulted in problem-free construction progress with all requirements being met. Left: internal formwork core 1. UK 70 universal couplings were used for connecting the individual VARIO elements to the SRU steel walers. The brace frame constructions, made of standard parts, served to transfer the reaction forces created during concreting. Perfect pre-fabrication: customised steel components for exact mounting of the formwork elements for the edges. On core 2, the contractors also implemented the proposals of the PERI engineers perfectly and achieved even more excellent results. Planning: KTP Kauffmann Theilig & Partner Generalplaner GmbH, Ostfildern Contractor: Josef Hebel GmbH & Co. KG, Ravensburg Field service: PERI Weissenhorn Manfred Einsle, Site Supervisor: Apart from the appropriate concrete mix, a prerequisite for the success of this project was that we needed good cooperation with PERI. The accurate planning and the delivery of the pre-fabricated formwork elements helped us tremendously to overcome the difficult challenges. 9

10 Athens, Greece Construction for the Olympic Games: Fast system equipment for tight schedules After 108 years, the Olympic Games are returning to its spiritual home in 2004 with different sporting events taking place in and around Athens. This has resulted in large developments being carried out involving enormous investment. Some of these investments include new underground rail routes, a new international airport, a modern motorway system and other major roads, hospitals, the biggest athletes village in the history of the Olympic Games as well as a range of impressive sporting facilities. Since 1999 PERI had its own subsidiary in Greece and has successfully been contributing to the realization and modernization of 23 different Olympic sports venues by supplying engineering services and system devices. Some of them are described here. Field service: The technical support illustrated on these two pages was given by PERI Greece. Olympic village For the Olympic village, a completely new district was created in the open countryside to the north of Athens. Accommodation for about 17,500 athletes has been designed according to passive house standards with high thermal insulation. Despite the extremely tight construction schedules, the high demands on the various plan views, wall heights and units have been fulfilled using TRIO, DOMINO and RUNDFLEX for walls and pillars as well as MULTIFLEX and SKYDECK for the slabs. Contractor: J/V GEK SA J&P AVAX SA; TECHNIKI OLYMPIAKI SA; ELLINIKI TECHNODOMIKI SA; MICHANIKI SA Main Press Centre With an area of more than 52,000 m 2, this modern building complex is the largest of its kind in the history of the Olympic Games. For the walls in the basement area, singlefaced formwork with DOMINO wall panels mounted on SB1 brace frames were used. Forming lifting units made it possible to finish the cycles with only a few crane lifts and bring them quickly to the next section. Depending on their availability, TRIO and DOMINO panels were used for the pillars. Even for cross-sections of up to 1.20 x 1.20 m where the DOMINO system was used no through anchors were needed. Contractor: J/V MICHANIKI SA GENER SA; DOKIS SA International Broadcasting Centre The extremely tight schedule for the construction of the largest broadcasting centre worldwide required a quick panel formwork system such as the TRIO 330. Materials supplied by the contractors responsible for the building of the shell was complemented by just in time deliveries from PERI so that during peak periods, more than 1,700 m 2 of TRIO 330 extended to a concrete height of 7.00 m in the areas of the staircases and elevator cores was used to ensure fast construction process. Contractor: ELLINIKI TECHNO- DOMIKI SA; IONIKI SA 10

11 Facts: Between 13 and 29 August, more than 300 Olympic gold medals will be awarded in 28 different kinds of sport and 37 disciplines. Among the 200,000 accredited participants, 10,500 athletes from more than 201 nations are taking part in this spectacle. Over 6,000 officials, 2,500 technicians and 45,000 volunteers ensure that the Olympic Games will take place without any problems. Weightlifting Stadium The freely-spanned roof structure is based on enormous steel lattice girders, which had to be assembled by means of a suitable shoring system. The supporting height, the high loads and the heavy wind forces as well as the complicated contact surface needed extensive static calculations. The combination of HD 200 heavy-duty props with the MULTIPROP system fulfilled the prerequisites of quick assembly and removal. The possibility to lift complete units by means of a crane in order to support further lattice girders matched the time schedule perfectly. Contractor: J&P AVAX SA Subcontractor: ERGOTELIS SA Ing. George Foutris, Project Manager: The PERI systems MULTIPROP and HD 200 were an ideal combination to safely carry the high vertical loads despite the complicated geometry of the steel lattice girders. Based on our experience during this project, I consider PERI to be a formwork supplier that is extremely able to support us in such difficult cases due to their technical competence and their large supply potential. Canoe/Kajak Slalom Centre A reinforced concrete basin forms the basis of an artificial waterway for the 350 m long course. A system of highcapacity pumps provide the necessary water turbulence. The shoring to erect the formwork for the water-carrying bridge was put together from 299 stacking towers ST 100 with a height of 3.74 m. Accurately-designed and prefabricated VARIO panels were used for the inclining side walls and cantilevers of the complicated cross-section. Through this, erection times were reduced and the required concrete surfaces realised. Contractor: J/V TECHNERGA E. TSAMBRAS SA K. KOURTIDIS SA 11

12 Tunnel by-pass, Flueelen, Switzerland Four tunnel casting lengths in only 9 days The 22 m long arched tunnel for installation of the ventilation plant runs transversely to the actual tunnel route of the bypass. Typically, these so-called cavern cross-sections of this order of magnitude are built in two to three stages firstly, the arched side walls in two stages and then the arched slab. However, in order to construct the inner ring in the very short time of only four weeks (including the formwork assembly), the TUF consortium decided in favour of the PERI technical solution. This was comprised of a tunnel formwork construction which allowed the concreting of a complete crosssection in one pour. As only four stages were to be completed and due to cost reasons this could be carried out without the need of integrated hydraulic equipment. After a problem-free assembly time of just three weeks, site crews were able to construct the four stages, with section lengths of 5.50 m, in only nine working days. The short stripping phase of about seven days brought the construction phase to a successful end for all concerned. Felix Bissig, JB Bau Altdorf (left) and Hansruedi Walker, Zschokke Locher AG, Supervisors: We received the most costeffective solution from PERI. In spite of the large-scale dimensions of the work involved, we could concrete the complete cross-section in one pour! The special support und moving construction comprised of elements from the PERI tunnel waler system which adapted exactly to the each cross-section. The complete formwork unit could be moved on rails from section to section using pulling equipment supplied by the contractors. Due to economic reasons, setting and stripping were done mechanically. The formwork construction consisted of a 27 mm 3-ply plywood, GT 24 lattice girders as distribution beam and curved HEB 160 steel girders Contractor: TUF consortium (Tunnel By-Pass Flueelen) Murer AG, Erstfeld; Prader AG Tunnelbau, Zurich; Zschokke Locher AG, Zurich; Rothpletz Lienhard+Cie AG, Aarau; CSC Impresa Costruzioni SA, Lugano Field Service: PERI Switzerland, Ohringen Shuttered Stripped

13 S1 Tunnel Rannersdorf, Austria Hydraulic shuttering and stripping: Easy to operate modular formwork carriage The formwork carriage construction provides unobstructed tunnel access for site traffic Slab box-outs the so-called sheds are formed with TRIO elements on the slab formwork. They increase tunnel safety operations in the entrance and exit areas. The formwork is raised for shuttering and lowered on to the heavy-duty wheels for moving by means of hydraulic cylinders The expansion of the former B301 Suedrand Street as an expressway connecting the A2 and A4 motorways will considerably ease the traffic situation in the southern districts of Vienna. The 16 km long road between Voesendorf and Schwechat requires five tunnels totalling around 4 km. For construction of the longest 1,880 metres the contractors are relying on PERI know-how in the entrance/exit areas (360 m and 223 m). The double-tube rectangular cross-sections are being constructed using the cut and cover, semi-monolithic method with each tunnel having two lanes. After concreting the transverselyinclined bottom plate in sections, the centre wall is formed in m segments using VARIO girder wall formwork. This is followed by two modular formwork carriages for the walls and slabs whereby shuttering and stripping are done hydraulically. Integrated heavy-duty rollers allow easy movement to the next casting segment. Adjusting the formwork carriages to the widened tunnel areas is carried out cost-effectively by means of GT 24 lattice girders and MULTIPROP props these are moved together with the carriages from cycle to cycle. Siegfried Hoelzl, Supervisor: The planned weekly cycle can be kept with our sixman crew without any problems whatsoever! Contractors: Joint-Venture S1 Tunnel Rannersdorf; STRABAG AG and Ed. ZUEBLIN AG Field Service: PERI Germany, Weissenhorn and PERI Austria, Getzersdorf 13

14 Sanatorium for visually handicapped, Starnberg/Soecking, Germany Walls more efficiently formed with TRIO-H: Fewer ties quicker shuttering times Situated in picturesque, idyllic surroundings, not far from Lake Starnberg, work is continuing on the extension of a sanatorium for the blind and visually handicapped. For construction of the walls, contractors are using the TRIO-H panel formwork system and standard TRIO elements proven and tested over many years in the adjustment areas. Both PERI systems could be matched without any problems as the required connecting parts are identical and can be used as normal. As TRIO-H elements require only one tie position for concreting heights up to 2.79 m and the conical-shaped anchor needs only to be handled from one side, this results in clear time savings on the site cm With the conical-shaped TRH tie, which is inserted from one side, wall thicknesses can be reset in 10 cm increments. Through the large size of the TRIO-H elements and the one-sided usability of the tie system without spacers, extremely fast shuttering times can be achieved. The high quality concrete surfaces, with only one tie position for the complete height, reduces the amount of work before decorating to a minimum. Andreas Zaenker, Formwork Supervisor: We ve been working for several weeks with the TRIO-H and that s with only two of us. The pre-assembled concreting platforms and low number of tie positions, with the pre-adjustable tie system with PVC spacers, considerably reduces our shuttering times! Integrated concreting platforms with approved guardrails on all internal elements immediately provide safe working areas for concreting after erection. The one-piece internal corner without ties, 60 cm wide and 3.30 m high, is quickly put into position and, with help of BFD alignment couplers, instantly connected with the wall-side TRIO elements. Contractor: Haseitl GmbH, Schongau Field Service: PERI Weissenhorn and Offenburg 14

15 Sunjuet Plaza, Business Centre, Istanbul, Turkey Efficient crane climbing formwork for shorter construction time and high quality execution The shell of this 38-storey business centre consists of L-shaped wall corner sections on the facade and, in plan view, rectangular columns as well as two symmetrically-arranged stairway and elevator shaft cores acting as constructive bracing. Using CB 160 brackets and VARIO GT 24 girder wall formwork, PERI engineers came up with a climbing formwork solution consisting of 20 units (brackets together with formwork) which could be moved to the next floor with only one crane lift thus saving a lot of time. PD 8 slab tables rounded off the expertly designed formwork solution perfectly so that the complete shell was finished in the stipulated 12 months. Haldun Oezyurt, Site Manager: We are pleased with both the technology and quickness of the PERI system as well as the technical support provided by the PERI representatives. In addition, we are convinced that every constructional task can be efficiently carried out with PERI formwork systems. Contractor: Demsar Construction Field Service: PERI Turkey, Istanbul The Sunjuet Business Centre is the highest building in the Maslak region. Access Ramp, Wohnland Rogg, Reutlingen, Germany PERI RUNDFLEX: easy radii adjustment and fast element connections For constructing this cantilevered elliptical ramp, the RUNDFLEX circular formwork served as an additional stopend for determining the ramp slabs and as internal formwork partially covered with Betoplan for the surrounding architectural concrete parapet. Contractor: Baresel AG, Tuebingen Field Service: PERI Offenburg The RUNDFLEX elements can be easily adjusted to the different radii using the provided template and quickly connected using BFD alignment couplers. Combined with the MULTIPROP system, GT 24 girders and specially cut timber as the formwork sub-structure, contractors had the best possible solution to build this difficult structure with its high quality requirements. The result speaks for itself: the ramp forms the heart of the furniture store. 23 radially-arranged main beams (MULTIPROP system and GT 24 girders) accurately provided the continuous slope as well as the inclined ramp crosssection on the underside. Steel PEP props shortened the spans and cut-to-length timbers supplied by the contractors for the cross beams accommodated the formlining. Roland Gugel (left) and Andreas Marx, Site Supervisors: The RUNDFLEX is a system that can be understood by everyone and is easy to assemble. Few components are required and, even with only two workers, it is still very efficient

16 Scala Opera House, Milan, Italy Coordinated formwork and scaffolding use for complex construction progress Part of the facade has been secured and the building s core removed. The concrete is distributed to the different levels by means of a central concrete spreader. Panel formwork for short shuttering times for walls: TRIO as climbing formwork on CB brackets and for single-sided forming on SB brace frames in the area of the foundations. The Scala in Milan, the most famous opera house in the world, had to undergo fundamental restoration and modernisation work. Part of the building was under a preservation order and the historic structure underwent important restoration work. On the other hand, the new construction and re-development project required more extensive measures. The work focused on three main areas: an administration tract, the stage area tower with nine levels of rehearsal rooms and the eight-level stage facility section. The contractors had to keep to an extremely tight schedule as The photos in this brochure were taken at various construction sites. Therefore, safety aspects and formwork tie details cannot be considered as final. Copyright by PERI GmbH well as implementing a very complex construction plan. Numerous overlapping work operations, various reinforced concrete constructions and different steel assemblies had to be coordinated together with providing reliable systems as well as safe working conditions for site personnel. For this, it was necessary to have the most suitable and efficient formwork and scaffolding systems available for each particular task as well as a constant dialogue between PERI engineers and the contractors. This combination of service and material deliveries was the key to problem-free construction progress. Ing. Mauro Turrini, Technical Director: An optimal technical service is essential for such projects. Limited space and the overlapping of various work operations required intensive coordination between the contractors and materials provider. In PERI, we not only have an ideal supplier of formwork and scaffolding but we also found a very competent partner. Working scaffold consisting of PERI UP Rosett components allows the safe and efficient assembly of steel elements. Contractors: C.C.C., Bologna (A.T.) and C.D.C., Modena / C.C.L.M. Milano Cooperative Reinforced Concrete: COGELSA Camezzano-Cizzago, Brescia Field Service: PERI Italy, Basiano PERI GmbH P.O.Box Weissenhorn Tel.: (+49) 73 09/ Fax: (+49) 73 09/ [email protected] D e 6/ ma Art.Nr