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Parque Da Cidade in São Paulo

Parque Da Cidade in São Paulo

Parque Da Cidade is a multi-tower multi-purpose green building complex located in the south of São Paulo. The project hosts 5 corporate office towers, a hotel, residential buildings and a shopping mall.

For this project, DextraDoBrasildelivered to contractor Odebrecht its Rolltec rebar coupler solution.

Rolltec is the most popular rebar slicing solution in Brazil, providing a competitive alternative to lap splices and more importantly allowingadvanced applications simplifying project management and operations.

For Parque Da Cidade, Rolltec rebar couplers were used to provide a connection between the columns and the beams. The solution was supported by a Rolltec equipment installed at site and maintained by our Dextra local engineers.

For that application, rebar couplers are aligned horizontally in the column reinforcement at each floor and cast in concrete. Dextra provide its couplers with thread protection cap so there is no risk of liquid concrete leaking into the coupler.

At a later stage of the project, continuation bar can be connected directly into the couplers, providing convenient starter bars for the beam or slab reinforcement.

Furthermore, on Parque Da Cidade, Dextra delivered its Unitec solution. Unitec is a bolted coupler that doesn’t require any rebar preparation. It was used on Parque Da Cidade to provide connection between the rebar protruding from two precast elements.

Car servicing building Kung Chong Rd. Singapore

Car servicing building Kung Chong Rd. Singapore

The Car Servicing Building located at 2 Kung Chong Road in Singapore is a mixed-use 7-storey car park basement, car servicing facility and office building. The building will be occupied by the Automobile Association of Singapore.

This project, built by Zhengda Corporporation Pte Ltd, is taking advantage of precast technology to achieve faster construction cycles. The production of the precast elements was performed by the Malaysian precaster Eastern Pretech.

For this project, Dextra delivered to Malaysia about 6,000 Groutec couplers, which have been embedded into shear walls and column elements.

The elements were then brought to site and reconnected to protruding reinforcement by injecting non-shrink grouting mortar. Bracing around the precast element is usually removed in the 3 days following the grout injection, significantly reducing the assembly time.

For more information about the availability of precast solutions in Singapore, please contact Dextra team in Malaysia.

Bangkok BITEC expansion

Bangkok BITEC expansion

BITEC, Bangkok International Trade & Exhibition Centre, is a large exhibition venue locast East of Bangkok in the Bang Na district.

Dextra was involved in the Phase II expansion of the exhibition center, taking place between 2014 and 2016. The expansion project added 3 exhibition halls, more than 32,000 sqm of exhibiting space under a ceiling height of 25 meters.

Dextra worked together with contractor Italian-Thai to engineer and supply long tension bar systemsthat will support the roof structure above the BITEC new exhibition halls.

In total, Dextra delivered 298 assemblies in various diameters, each composed of multiple bars connected with couplers and turnbuckles and anchored to the structure with fork ends, with total assembly lengths in several cases exceeding 50 meters long (average 33 meters).

Delivery took place end of 2015 and installation was completed by mid-2016. Bangkokians can still easily admire the Tension Bars roofing structure when stopping at BTS Bearing station, or driving up the Bang Na Trat highway.

For such large structures, Tension Bars offer a number of advantages compared to other “tensioning” solutions: lower elongation under loads, lower post tensioning forces required, better resistance to corrosion, reduced long terms relaxation and reduced maintenance and surveillance costs.

Moreover, they are easily to install thanks to their fork ends and offer a very aesthetic roofing structure.

Mumbai Nathani Heights

Mumbai Nathani Heights

Nathani Heights is a 72-storeys skycrapper in Mumbai. With a total height of 262 meters it is among the 30 tallest building in the city. The construction of the building started in 2012 and will be completed in 2018.

For this project, Dextra supplied its famous Bartec rebar coupler solution. Bartec is the main rebar coupler solutions in India, satisfying all technical requirements even in seismic areas.

As in other highrise building, rebar couplers have been used for large diameter rebar connection in vertical applications such as columns and corewalls (bar to bar vertical connection).

Rebar couplers were also used for slab connections. In that case, the coupler is pre-positionner flush with formwork (allowing climbing formwork to go up). After casting, a threaded rebar is simply screwed inside the coupler to create the starter bar.

Louvre Abu Dhabi Museum

Louvre Abu Dhabi Museum

Louvre Abu Dhabi is an innovative art and civilization museum located North of Abu Dhabi city, capital city of the United Arab Emirates. It is the largest museum in the Arabian peninsula, with a total surface of 24,000 square meters. The Louvre Museum Abu Dhabi opened its doors on the 11th of November 2017.

For this project, Dextra has been involved on the concrete works between 2013 and 2014, supplying Bartec rebar coupler solution to Arabtec for all rebar connections in raft and columns. Couplers were also used to a way to create temporary openings in the reinforcement structure to allow passage of men and equipment. A total of 110,000 Bartec rebar couplers were supplied for this project.

The Bartec solution is a solution approved by the DCL (Dubai Central Laboratory), making its use possible in the UAE. All threading services to prepare the rebar used at Louvre Abu Dhabi were performed by Dextra’s network of distributors.

For more information about the availability of rebar splicing solutions in Middle East, please contact our Dubai office for more information.

New Algiers Grande Mosque

New Algiers Grande Mosque

The new Djamaa El Djazair Mosque of Algiers is a huge construction project located in the eastern part of the capital city of Algeria. It will feature the world’s tallest minaret with a height of 265m. Further to this, the large complex will be able to accommodate as many as 120,000 worshippers.

For the main mosque’s building, Dextra supplied its Tension Bar Systems to China State Construction Engineering Corporation, the main contractor on this project. In total, those are more than 800 structural tension bar assemblies with diameters ranging from M16 to M56 which are being used for the cross-bracing of the roofing structure in the domed prayer room.

Each tension rod is painted in white to match the interior design of the mosque. Bracing discs (top left picture) add to the special architectonic finish of the structure.

For the building and minaret construction, Dextra also supplied its popular Bartec coupler solution, also available in Algeria through our network of distributors. consult our Paris office for more information.

Maryah Plaza

Maryah Plaza

Maryah Plaza is a commercial mixed-used development located on Al Maryah Island, designated to become the Emirates’ new business and lifestyle destination. The four water-adjacent towers are comprised of residential apartments, a 5-star hotel, and retail outlets. The project aims to create an open public space where users can walk freely across the development.

Dextra Compression Struts are used in the one of the four towers of Maryah Plaza. The four sets of Compression Struts delivered by Dextra elegantly fit into the tower’s lobby floors opening it up for waterfront views. Compression Struts are used to support heavy structures, in this project it is used as a cross-bracing element, increasing the tower’s ability to withstand seismic loads.

Four sets of 60-cm-diameter Compression Struts were used in the project. They are the largest diameter and highest performing sets Compression Struts Dextra ever built. Thanks to a streamline design and its convenient pin & fork locking feature, the sets were assembled on site in a week.

The Compression Struts is a circular hollow section bar and is capped at the ends by threaded fork. This threaded fork design allows for ease of assembly, making it possible for workers to put the strut together onsite in a matter of minutes.

Garden Towers

Garden Towers

Business Garden Bucharest is a modern mixed used class A office complex. It features retail spaces, pairing with commercial and public services on the ground level. The name Business Garden stems from its integrated spacious green area, a garden connecting the buildings with designated recreation spaces. Generous lawn area, pedestrian pathways, and benches with free Wi-Fi are provided to invite the office goers to work or take a refreshing break outside. The complex is LEED Platinum pre-certified. To support the tenant’s everyday life needs of their employees, Business Garden Bucharest’s offices are designed to have efficient layout, built with high quality finishes and sustainable solutions that are in line with LEED Platinum green certifications.

For this project, Dextra was involved in the supply of its Fortec rebar coupler solution. The Fortec solution is made up of a standard rebar coupler that can be utilize as both standard and position splices connecting two rebar ends that have been previously enlarged and threaded. Fortec is especially suitable for seismic environment construction, which is the case of buildings in the Bucharest area.

Fortec couplers have been used to provide superstructure vertical connections. Fortec couplers are relatively compact and can help to reduce the congestion created from rebar lapping. Fortec couplers also provided temporary opening, allowing movement of the workers and equipment around the reinforcement. Before casting, the continuation bars are simply connecting to the couplers, filling the temporary opening gap.

Bucharest Orhideea Towers

Bucharest Orhideea Towers

Orhideea Towers is a double tower office building complex located in the Western part of Bucharest.The towers are respectively 85m (17 floors) and 64 meters tall (13 floors). The two towers are connected by the use of a sky bridge.

For this project, Dextra was involved in the supply of its Fortec rebar coupler solution. The Fortec solution is composed of a standard rebar coupler, used for both standard and positional applications, connected to two rebar end which have previously been enlarged and threaded.Fortec is especially suitable for seismic environment construction, which is the case of buildings in the Bucharest area.

Fortec couplers have been used to provide all reinforcement connections in the heavily reinforced foundation mat (1.5meters thick). Fortec couplers are relatively compact and avoid the tedious task of overlapping rebar in congested environment.

Fortec couplers also provided temporary opening, allowing movement of men and equipment around the reinforcement. Before casting, the continuation bars are simply connecting to the couplers, filling the temporary opening gap.

London Wall Place

London Wall Place

London Wall Place is large a double tower office development in London built close to the Roman City Wall historical monument.

For this project, Dextra offered contractor Byrne Bros and main consultant WSP a technical solution for the fast installation of precast wall panels.

The concept was to install Groutec couplers in each panel reinforcement, at the bottom of the vertical bars previously prepared with Rolltec thread system, available in the UK through our distributor network.

After bracing the precast panel in its final position, non-shrink grout is injected into the cavity of the coupler, in order to create the rebar connection. Groutec is not reliant on a specific type of grout. Rather, several different brands of grout can be used, facilitating local scouring and helping to keep costs low. The bracing around the panel is then removed after the grout has achieve a prescribed strength.

After straightening and bracing of the precast panel, non-shrink grout is inserted into the cavity by injection. Dextra does not supply grout as Groutec is by design compatible with several brands that can be sourced locally, generating savings and easing project management.After injection, the bracing around the precast panel may then be removed after only 3 days.

The use of Groutec for precast panel is a time-saving and economical way to quickly take advantage of the precast technology. For similar application video, please check The Plum Central Station project page.

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