The SYMDECK 73 profiled steel sheeting is a galvanized trapezoidal profile which is being used in the construction of large spanning composite decks. Moreover it can be used alone (i.e. without concrete) as the main structural element for light floors.
The upper surface of the steel sheeting is stiffened against local buckling with an intermediate stiffener in its middle. Within the web of the cross-section there are embossments which offer the extra bond required between the steel sheeting and the concrete in order to transmit the longitudinal shear forces which develop at the interface of the two materials. It should be mentioned that the pure bond between the steel sheeting and the concrete is not considered as effective for the composite action. Steel sheetings are always manufactured according to the high standards of the factory, with a thickness that varies from 0.75 mm to 1.25 mm. The steel being used is of high quality Fe320G in accordance to Eurocode 3, galvanized and can be painted in various colours.
Coil width: 1250mm
Coil thickness: 0,75mm ~ 1,25mm (±0,02)
Covering Width: 750 ± 5,0mm
Depth of wave: 73 ± 1,0mm
Pitch: 187,5 ± 2mm
The composite decks consist of profiled steel sheeting and reinforced concrete. The composite method of deck construction was first introduced in North America and is increasingly being used in Europe and in Greece,
During the last years the use of composite decks in civil engineering structures has been increased due to the advantages that it offers with respect to more traditional solutions. The benefits from the usage of composite decks can be summarized in the following:
- Less construction time is required.
- The usage of wooden formwork is avoided.
- They can be used to bridge larger spans.
The main component of the composite decks is the profiled steel sheeting which during the construction phase, functions as formwork supporting the wet concrete. After the hardening of the concrete, the composite decks undertake the additional imposed loads. Usually, a light reinforcement is applied to the upper surface of the composite deck which protects the concrete from cracking. In the case that a continuous beam structural system ia adopted; this reinforcement also gives to the composite deck the ability to undertake hogging bending moments at the positions of the supports.
SYMDECK DESIGNER 2
The new version of the SYMDECK DESIGNER 2 software, that was created for the design of continuous composite slabs systems with trapezoidal steel profile SYMDECK73, is fully harmonised with the provisions of the current Eurocodes (EN 1993-1-3:2006, EN 1993-1-5:2006, ΕΝ 1994.01.01: 2005 and ΕΝ 1994.01.02: 2005), after being updated and enhanced in comparison with the previous version of SYMDECK DESIGNER.