Early stripping ups the tempo

MonoDec slab formwork used on commercial building project in Bolivia

Data & Facts

  • Project
    • Attura office building, Cochabamba, Bolivia
  • Principal
    • Canedo Desarrolladores, ­Cochabamba
  • Contractor
    • Espinoza Construcciones, Cochabamba
  • MEVA systems
    • MonoDec slab formwork
    • EuMax props
    • AluFix wall formwork
  • Engineering and support
    • MEVA Sistemas de Encofrado S.A.S., Bogotá, Columbia

Lightweights for heavy loads

The Attura office building scheme is currently on site in Cochabamba, Bolivia's fourth-biggest city. October 2020 saw completion of the structural works, on time and to the specified quality. Contractor Espinoza Construcciones managed to speed up site operations, among other things, by using the cost-effective MonoDec slab formwork system that offers time savings through early stripping.

Perched atop the San Pedro hill, a 40 m tall Christ statue – the Cristo de la Concordia – overlooks the "City of Gardens", as Cochabamba is often called due to its many parks. The new Attura office and commercial building that rises up from the Plaza Quintanilla boasts 14 storeys, each 2.8 m high with an over 800 m² floorplate.
 
Early stripping as a real time-saver
Espinoza Construcciones deployed some 900 m² of the MonoDec system. The slab formwork with aluminium profiles is not only easy to assemble and dismantle, but also provides for early stripping. Apart from accelerating progress on site, this also streamlines inventory management – all the more so as the system comprises only three components: panels, primary beams and props with drop head.

EuMax props, suitable for heights up to 5.5 m and with a high load capacity, provided support for constructing the building corners.  Long pins were inserted to secure the connections with the primary beams. After concreting, a few hammer blows against the drop head wedge rings sufficed for early lowering of the primary beams and panels by 10 cm. This enabled their removal and immediate preparation for reassembly at another location. The props remained in place to reshore the freshly cast slabs.

Thanks to their low concrete adhesion, the MonoDec panels are quick and easy to clean. The generous standard (200 x 165 cm) spacing of the EuMax props below the slab formwork offered the additional advantage of providing the site operatives with ample circulation and working space.

Lightweights for heavy loads
Despite its low panel weight of only 19 kg/m², the aluminium MonoDec system makes no compromises in terms of robustness and is suitable for casting up to 44 cm thick slabs. The light metal is resistant to moisture, corrosion and fungal attack, thereby guaranteeing a long service life for the 100% recyclable formwork product. With a thickness of only 65 mm, the slim panels also simplify storage and logistics.

MonoDec's flexibility certainly paid dividends in Cochabamba. While the system was readily adaptable to all required geometries, the smooth form face delivered a high-quality surface finish for the beams and slabs. Apart from minimising fatigue during transportation, the standard 50 cm panel width facilitates handling and installation by a single operative.

Alongside the cost-effective MonoDec system, the contractor also deployed MEVA's AluFix wall formwork. The lightweight, crane-independent system similarly ensured quick and successful casting of the columns for the 14-storey Attura office building.