OverviewThe flexible girder slab formwork for all ground plans and slab thicknesses up to 1.00 m. The system is based on VT 20K or GT 24 formwork girders; girder positions, spacing and formlining can be freely selected to meet project requirements.
Key features- Flexible girder arrangement: main and cross-beam positions and spacing are freely selectable.
- Compatibility with VT 20K (solid web) and GT 24 (lattice) girders to optimise spans and material use.
- Suitable for slab thicknesses up to 1.00 m; GT 24 enables large spans and reduces handling effort.
- Free choice of formlining to achieve the required underside concrete finish.
- Adaptable to complex ground plans (polygonal, trapezoidal, overlapping layouts) and confined spaces.
Applications / Example projects- Cardiff University - Innovation Campus (variable girder positioning)
- Riverside House (adaptable surface and formlining requirements)
- Luton DART Rail Link (optimised combination of GT 24 and VT 20K girders)
Girders & configurationThe system is configured with VT 20K or GT 24 girders depending on project needs. GT 24 allows larger spans and reduces the number of parts to be moved; VT 20K is a cost-effective choice for smaller slab thicknesses. Main and cross beams as well as formlining are selected freely to match layout and load requirements.
Product Data Sheet summarySystem type: girder slab formwork with wooden carrier and free choice of formlining. Typical installation time: approx. 0.27–0.53 hrs/m². Permissible characteristic column load: 22 kN or 28 kN depending on girder. Slab thickness capability up to 1.00 m. Free column grid and quick dimensioning via table slides or tables book.
Technical specifications- System type: Girder slab formwork
- Material: Wooden carrier
- Formlining: Free choice
- Installation time: 0.27–0.53 hrs/m²
- Permissible column load: 22 kN or 28 kN (depending on girder)
- Slab thickness: Up to 1.00 m
- Variant VT 20K: girder height 20 cm; lengths 1.45 m to 5.90 m (11 lengths)
- Variant GT 24: girder height 24 cm; lengths 0.90 m to 6.00 m (18 lengths), overlengths on request