Plans for a new hotel in the Jordanian capital were shelved, leaving the structure unfinished for several years before being selected for conversion to a medical facility. But the three existing buildings, ranging in height from 7 to 35 storeys, needed structural alteration and strengthening works to meet the functional demands of a hospital. For this building rehabilitation, four substantial basement levels extending across the entire site required major reinforcement on the underside of the floor slabs and on the columns.

  • Name of the owner
    Abdali Clemenceau Hospital Company
  • Name of the client
    Arab Tower Contracting Company (ATCCO)
  • Delivery date of the project
    January 2017
  • Partners of the project
    Client representative: Aecom Middle East Ltd
    Design & review engineer: Consolidated Consultants Group
Clemenceau Medical Center - Empty building

Building rehabilitation expertise

Freyssinet was employed as specialist subcontractor on the design-build contract to adapt the three buildings, which were connected by seismic movement joints, and ensure that they met the appropriate European and American building regulations. The company was brought in ahead of the construction work, to advise the client’s representative on techniques that could be used to achieve the strengthening that was needed, and subsequently to carry out the design of the work for this building rehabilitation project.
The buildings have reinforced concrete slabs at ground level and below, with post-tensioned slabs on all floors above.

Strengthening works to accomodate hospital facilities

In contrast with hotel floor loading demands, which are relatively light, hospital facilities must accommodate heavy equipment and a high density of mechanical, electrical and plumbing services, as well as specific services such as oxygen that are needed for medical procedures.

The arrangement of MEP openings through the floors had to be completely revised, with some having to be closed up and new ones created. This involved construction of additional underpinned beams and the extensive use of strengthening techniques around the new openings, including application of around 25 km of Foreva TFC carbon fibre rolls, and 1,900 t of dry mix Foreva shotcrete, which was delivered in bags of 1m3.

  • 1,900
    Tons of dry mix shotcrete applied
  • 25
    Km of TFC carbon fibre reinforcement strips
  • 540
    m3 of new concrete structural elements
Clemenceau Medical Center - Shotcrete application

Boost resistance capacity

The Foreva shotcrete was applied to vertical elements such as columns and walls, as well as horizontal elements to boost capacity, achieving a resistance of 80 MPa and proving easier and cleaner to use than wet mixes, particularly at the higher reaches of the building, which rises to more than 125 m. In certain locations the thickness of the floor slab had to be increased around the columns to provide local strengthening.

Fibre force needed for this building rehabilitation

Any horizontal elements that did not need such a high increase in capacity were strengthened with Freyssinet’s Foreva TFC H300. A sandwich of carbon fibre fabric strips was saturated with Foreva TFC/M epoxy resin, to increase the capacity of the slab.

Clemenceau Medical Center - TFC application - Building rehabilitation
Clemenceau Medical Center - reinforced bars - Building rehabilitation

Locking off

Where new openings were required in the slabs, prestressing tendons had to be locked off to control the tension in them; this was done in some 1,400 separate locations by uncovering the tendons and surrounding them with high strength grout.

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