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.

O Louvre Abu Dhabi é um museu inovador de arte e civilização localizado ao norte da cidade de Abu Dhabi, capital dos Emirados Árabes Unidos. É o maior museu da Península Arábica, com uma superfície total de 24.000 metros quadrados. O Museu do Louvre Abu Dhabi abriu as suas portas no dia 11 de novembro de 2017.

Para este projeto, a Dextra esteve envolvida nas obras de betão entre 2013 e 2014, fornecendo Bartec solução de acoplador de vergalhão para Arabtec para todas as conexões de vergalhão em jangadas e colunas. Os acopladores também foram utilizados como forma de criar aberturas temporárias na estrutura de reforço para permitir a passagem de homens e equipamentos. Um total de 110.000 Bartec acopladores de vergalhão foram fornecidos para este projeto.

O Bartec solução é uma solução aprovada pelo DCL (Laboratório Central de Dubai), possibilitando seu uso nos Emirados Árabes Unidos. Todos os serviços de rosqueamento para preparação do vergalhão utilizado no Louvre Abu Dhabi foram realizados pela rede de distribuidores da Dextra.

Para obter mais informações sobre a disponibilidade de soluções de emenda de vergalhões no Oriente Médio, entre em contato com nosso Escritório em Dubai Para maiores informações.

Business Garden Bucareste é um moderno complexo de escritórios classe A de uso misto. Possui espaços comerciais, conjugados com serviços comerciais e públicos no rés-do-chão. O nome Business Garden deriva da sua ampla área verde integrada, um jardim que liga os edifícios a espaços de lazer designados. Generosa área relvada, caminhos pedonais e bancos com acesso Wi-Fi gratuito são disponibilizados para convidar os frequentadores do escritório a trabalhar ou a fazer uma pausa refrescante ao ar livre. O complexo possui pré-certificação LEED Platinum. Para apoiar as necessidades quotidianas dos inquilinos dos seus colaboradores, os escritórios do Business Garden Bucareste foram concebidos para terem um layout eficiente, construídos com acabamentos de elevada qualidade e soluções sustentáveis que estão em linha com as certificações verdes LEED Platinum.

Para este projeto, a Dextra esteve envolvida no fornecimento de sua solução de acoplador de vergalhões Fortec. A solução Fortec é composta por um acoplador de vergalhão padrão que pode ser utilizado tanto como emendas padrão quanto de posição conectando duas extremidades do vergalhão que foram previamente ampliadas e rosqueadas. Fortec é especialmente adequado para construção em ambiente sísmico, como é o caso de edifícios na área de Bucareste.

Acopladores Fortec têm sido usados para fornecer conexões verticais de superestruturas. Os acopladores Fortec são relativamente compactos e podem ajudar a reduzir o congestionamento criado pela lapidação de vergalhões. Os engates Fortec também proporcionaram abertura temporária, permitindo a movimentação dos trabalhadores e equipamentos ao redor da armadura. Antes da fundição, as barras de continuação são simplesmente conectadas aos acopladores, preenchendo a lacuna de abertura temporária.

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.

Icon Siam complex, located on the right bank of the Chao Phraya river in the West of Bangkok, is a new multipurpose commercial/residential complex consisting of two highrise buildings and a shopping mall. This new massive project aims to give back its glamour to the banks of the Chao Praya river.

The two towers are expected to reach 280m (SuperLux Tower) and 315m (Magnolia Tower) respectively. The Magnolia Tower will thus be slightly taller than the MahaNakhon Tower, Bangkok’s tallest building since 2015.

Dextra is supplying Thai-Obayashi (contractor of the shopping mall structure) and Italian-Thai (contractor of both towers) with its Bartec rebar splicing solution.

Dextra engineers performed operator trainings and do preventive maintenance directly on site to guarantee maximum output in thread production.

In total, more than 800,000 Bartec rebar couplers and 20,000 Bartec Barras com cabeça are being used in foundations and superstructure in the following applications:

L-shaped dowel bars (wall-slab connections)

This is a typical application used in foundation D-Walls to avoid protruding rebar. it is also used in the superstructure to allow the sliding formwork to climb up without any disturbance

Substitution of hooked bars with end anchors

When the wall reinforcement is especially congested, the use of Headed Bars (also called end anchors) allows to anchor the reinforcement in the wall without the need to produce hooks.

Double-ended connection in shear-walls

This solution allows to create a continuity inside the column or wall by bridging two horizontal slabs or beams.

Welded couplers for composite structures

Sometimes it is necessary to start reinforcement from the steel structure. In that case, weldable couplers are the ideal solution: Made of a low-carbon steel, they can be welded easily and allow connection to a threaded rebar.

Landmark 81 is a new highrise tower project located on the bank of the Saigon river in Ho Chi Minh City. The project is owned by Vietnamese company Vingroup.

The tower, whose construction started end of 2014, is expected to reach the height of 462 meters, a new height record in Vietnam. Landmark 81 will the 11th tallest tower building in the world.

For this project, Dextra is supplying its renowned
Bartec solution to contractor Coteccons. Bartec solution has been approved by ARUP, owner’s representative consultant, and MACE International, structural consultant.

In total, 250,000 Bartec couplers will be used for vertical rebar connection in the corewall and columns as well as for horitonzal applications such as corewall-to-beam and corewall-to-slab connections.

The use of rebar couplers allows the climbing ormwork to move its way up unencumbered as well as connect slabs starting bars in a very productive manner. Those technologies combined with state-of-the-art concrete monitoring allow very fast construction cycles as short as 35 hours per floor.

For composite applications (steel columns to beams), Dextra also supplied 20,000 weldables couplers.

Example of weldable Bartec coupler on beam

The fast-paced construction site is supported by three sets of Dextra Bartec equipment, installed directly on site. The equipment is maintained by Dextra and operated by Dextra’s distributor in Vietnam, Lotus Greentech.

Concrete works were completed ahead of schedule early 2018.