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.

Business Garden Bucharest es un moderno complejo de oficinas de clase A de uso mixto. Cuenta con espacios comerciales, combinados con servicios comerciales y públicos en la planta baja. El nombre Business Garden proviene de su amplia zona verde integrada, un jardín que conecta los edificios con espacios de recreación designados. Se proporciona una amplia zona de césped, senderos peatonales y bancos con Wi-Fi gratuito para invitar a los asistentes a la oficina a trabajar o tomar un descanso refrescante al aire libre. El complejo cuenta con la precertificación LEED Platino. Para satisfacer las necesidades cotidianas de los inquilinos de sus empleados, las oficinas de Business Garden Bucharest están diseñadas para tener una distribución eficiente, construidas con acabados de alta calidad y soluciones sostenibles que están en línea con las certificaciones ecológicas LEED Platinum.

Para este proyecto, Dextra participó en el suministro de su solución de acoplador de barras de refuerzo Fortec. La solución Fortec se compone de un acoplador de barras de refuerzo estándar que se puede utilizar como empalme estándar y de posición para conectar dos extremos de barras de refuerzo que han sido previamente agrandados y roscados. Fortec es especialmente adecuado para la construcción en entornos sísmicos, como es el caso de los edificios en la zona de Bucarest.

Se han utilizado acopladores Fortec para proporcionar conexiones verticales de superestructura. Los acopladores Fortec son relativamente compactos y pueden ayudar a reducir la congestión creada por el traslape de las barras de refuerzo. Los acopladores Fortec también proporcionaron una apertura temporal, lo que permitió el movimiento de los trabajadores y el equipo alrededor del refuerzo. Antes de fundir, las barras de continuación simplemente se conectan a los acopladores, llenando el espacio de apertura temporal.

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 con cabeza 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.

ONE Limassol Tower is a commercial building and a new landmark of Limassol, Cyprus. The project aims to position the island on the international luxury property market, enhancing the attractiveness of the country for foreign investment by offering world-class residence, amenities and services. This will also boost Cyprus’ economy, while increasing local employment opportunities.

At 170 meters above ground with 33 storeys in total, the ONE Limassol Tower is the tallest seafront residential project in Europe. The building will host 83 luxurious apartments, including a three-storey penthouse.

For the reinforcement of this landmark building, Dextra delivered its rebar couplers and bar-end preparation machine sets to the contractor J&P and ACC JV, which is a joint-venture between Joannou & Paraskevaides Group (J&P) and Arabian Construction Company (ACC).

More than 60,000 Bartec couplers were used for rebar splicing in rafts and vertical parts of the building.

The completion of this iconic project is scheduled in 2019.