Our achievements

Financial City in Abu Dhabi (United Arab Emirates)

Client

MUBADALA DEVELOPMENT

Principal

MUBADALA DEVELOPMENT

Architects

GOETTSCH (Architectes Chicago) et GENSLER (Architectes Londres)

Description

Construction of the Financial City of Abu Dhabi on the Island of Al Suwaah with, in the first phase:

  • a stock exchange, several quarters with towers (2 of which are 30-floor towers and 2 40-floor towers), shops, technical zones etc., complex urban highways with 2 x 3 lanes, elevated on two levels ("double deck"), traffic management roundabouts in a clover shape, 2 bridges 350 and 550 metres long,
  • doubling of the area of the island increasing it from 50 to 112 hectares.

The business building, dedicated to the Stock Exchange and forming part of the Financial City of ABU DHABI, is a very high Building of 5 floors, including the terrace roof, supported by 4 reinforced concrete newels passing through the commercial podium. This STOCK EXCHANGE Building, of a complex trapezoidal shape, is designed and constructed as a bridge. The main public entrances and the emergency exits are located level with the podium. The podium level consists of 2 lobbies 15 m high (North and South), with a view of the large body of water. The connection to the upper floors is made by 6 panoramic lifts, 8 emergency staircases and 2 lifts dedicated to firemen. The podium is also connected to the commercial zone by 2 interior footbridges.

The Trading Floor, with an area of 1150 m2, located on the 3rd floor, opens onto an atrium, which is circular in shape and 15 m high in its central section and is surrounded by 33 broker booths). The funnel shape results from the two balcony rings, which are mutually offset, on the 4th and 5th floors and to which are fixed the 2 LED screen rings inclined 10 degrees.

Missions of Oger International

Complete Project Management (except architecture)

Technical surveys: HVAC (heating, ventilation & air-conditioning) lots / Plumbing / Electricity: BIM Synthesis.

Modelling of 4,000 m² of façades of the central building in the EXE phase
Sustainable development: project aiming for LEED® certification (LEED = Leader in Energy and Environmental Design) Core & Shell v2.0 Gold level (Gold prequalified project)

A non-standard project:

STRUCTURE:

The Stock Exchange Building has been constructed in seismic zone 2A according to the International Building Code (IBC) classification. The culvert invert is built on piles 42.00 m deep. The construction of the culvert invert required 5,000 tonnes of steel. The platform, representing a floating structure seated 30 m above ground level is a mixed steel/concrete design braced by 4 reinforced concrete cores to which are connected the elements of metal structures on 3 floors.

The general dimensions are 100m x 60m x 25 m in height. The 4 reinforced concrete cores supporting the building are approximately 13m x 8m x 55m in height. The metal structure of the building consists of lattice girders 6 m high spaced 9 m apart. These girders have a span of 50 m between supports. These supports are comprised of 4 metal casing posts at various points. The 4 floors, as well as the terrace roof,, are formed by a concrete floor poured on steel trays and supported by a system of metal posts and girders.

ELECTRICITY / WEAK CURRENTS

  • Cabling: 450 km of cable networks, Cat. 7 FA, were required.

AIR-CONDITIONING:

Cooling requirements met by the production of external iced water. Distribution of iced water to the different air-conditioning units provided in a variable flow adapted perfectly to the requirements. General air-conditioning of the building by means of an air-only system comprising air-conditioning units and variable flow boxes (VAV), as well as iced water distribution systems in the premises. Air-conditioning of the Trading Floor also by means of an air only system, but with blowing through the floor (by displacement), allowing a high degree of comfort and air-conditioning of the occupied areas only. Fire protection of the building (smoke extraction and/or pressurisation) provided according to NFPA regulations.

Some figures characterising this building. Cooling requirements: 3500 kW, 18 air-conditioning units of 3,000 to 60,000 m3 /h, 70 variable flow boxes, 4 energy recovery wheels (sensitive and latent) on the extracted air, 20 iced water cabinets, 4 smoke extractors of 50,000 m3/h).

Area

600.000 2 (building only)