A perfect choice: the Genatop
In this cap construction the stainless steel-316 beams make the silo cap a self-bearing whole. The beams increase the stability, also in more extreme situations such as higher wind forces and snow loading in combination with rain, freezing rain and the beginning of a thaw. This cap construction is flameproof if the roof has to collapse or shoot loose. Connection to other steel constructions, such as platforms and bridges is possible with this cap construction. Access to the silo can be achieved in a variety of ways. The material we use for this is a Genatex 850 or 1600 reinforced PVC foil. 
 
Other arguments that make the Genatop unique:

• unsupported construction possible to 20 metres silo diameter and to about 50 metres with a centre column;
• rotating cap possible
• any shape is possible (round, square or turban);
• maintenance-friendly because the cap can be freed from the outside and can be lifted from the silo in its entire;
• after care: the cap requires no maintenance. Inspection and checking of the foil and steel is sufficient.

How does Genap go about its work?
It all begins with a design. The following design aspects are all taken into account during a comprehensive inventory of the silo or warehouse: application, material, site, new or existing, dimensions, special constructions, customer wishes such as colour, fire class, national and local requirements, explosion pressure if the roof has to collapse or shoot loose, increased or reduced pressure if the silo has forced ventilation, layout of stirrers, mixers, aerators and similar in the silo, etc.

All points from the inventory are included in one design:
In doing so the foil and stainless steel must connect to each other precisely. Important here is the determination of the geometry of the silo cap construction. Genap makes statistical calculations for the foil and steel and informs the construction company or the customer of the loadings on the steel frame and on the silo. If necessary the steel contractor carries out the statistical calculation for the steel frame. After the statistical calculations have been agreed the details are developed further in working drawings for both the foil and the steel. These working drawings are used to prepare templates, item lists, specifications, work and assembly instructions. When the design is ready this is sent to the customer for approval.

After approval and issuing of the order a start can be made with the realisation of the cover. The foil templates are first cut on our high frequency CNC welding machine and welded in the form of the cap. The cap construction is then transported to its destination.

Before the cap construction is fitted the beams are measured, put in place and finally attached to the silo at the site. The foil cap is then laid on the steel construction while still folded, and then unfolded. Separate parts, such as the crown and manholes, are welded to the silo cap. Finally, the silo cap is tensioned using ratchets.