New formwork as time-saver

High-spec residential units built with StarTec XT and MevaDec

Data & Facts

  • Project
    • Apartment buildings at Feldgasse, Kufstein, Austria
  • Contractor
    • Rieder Baugesellschaft m.b.H. & Co. KG, Austria
  • MEVA systems
  • Engineering and support
    • MEVA Schalungs-Systeme Gesellschaft m.b.H., Pfaffstätten, Austria

Early stripping with a few hammer blows

The use of MEVA technology on a 31-unit housing scheme in Austria helped to speed up site operations and achieve high concrete quality. Contributing factors included the flexibility and efficiency of the state-of-the-art StarTec XT and MevaDec formwork systems.

"The past few weeks have seen exciting developments at the Feldgasse site," announced RIEDERBAU on its Facebook page in August. "The structural and concreting works are almost complete." With the project in the Austrian town of Kufstein on the "green" River Inn running like clockwork, that milestone was soon reached. Offering views of the town's landmark fortress, the scheme comprises two attractive apartment blocks with 340 m² and 270 m² footprints, a shared basement level, separate ground floors and three to four upper storeys, and houses 31 high-spec units.
The Tyrolean contractor opted to deploy up-to-the-minute MEVA systems: the new
StarTec XT wall formwork along with the weight- and handling-optimised MevaDec slab formwork.

XT tie rod cuts time requirement
The StarTec XT wall formwork with integral combi tie hole allows flexible, one-touch switching between three tying methods without the installation of additional parts. Operatives can simply choose between single- or two-sided tying, with or without plastic tube. To cast the 270 cm tall walls, site manager Fabian Gfäller and his team decided to use single-sided tying with the XT taper tie. The wall thickness was defined simply by locking spacer rings in place at the end of the tie. Moreover, given the constant wall thickness throughout the building, no repetitive measurements were required. Nor was there any need for plastic tubes, ancillary cones or the normal, time-consuming operations: preassembly of articulated flange nuts on conventional tie rods, prior insertion of tie rods in initially set formwork, cutting to size of plastic tubes to define wall thicknesses, fitting of plastic tubes and cones onto tie rods, installation and removal of articulated flange nuts on closing formwork side during formwork assembly and stripping. As site manager Fabian Gfäller confirms, "The use of StarTec XT and XT taper ties for the wall formwork was a key factor in speeding up the assembly and stripping processes."

Early stripping with a few hammer blows
To cast the slabs, RIEDERBAU used the refined ­MevaDec system, which is now even lighter and easier to handle. As the slab formwork is not constrained by any fixed grid, it can be flexibly adapted to any layout and slab thickness. ­Moreover, the predefined prop grid improves safety, simplifies ­assembly and rationalises on-site inventory. The panels can be installed from above and below while the minimisation of filler areas further reduces set-up times. Use of the drop-head-beam-panel method at the Kufstein site paid dividends in that it allowed efficient early stripping with just a few hammer blows. Here, the props continue to support the slab while the formwork panels are removed for fast and easy cleaning prior to reuse in the next formwork cycle – thereby streamlining site logistics and inventory management.

Both StarTec XT and MevaDec are fitted as standard with the durable, nailable and easily repairable alkus all-plastic facing, which neither absorbs water, nor swells, nor shrinks. Its smooth, robust surface guarantees a high-quality concrete finish, even after heavy use.