VaultsPolygal sheets have the desired property of cold bending, which enables the architect to create complex structures. An arched roof has a stronger structure than a flat roof per same sheet, therefore creating arches strengthens your structure.
- A correct vault is composed of a rafter of steel profiles allocated under the sheet sides.
- These rafters support the glazing profiles for the entire length, which have the following advantages: creation of "clean" light strips, strengthening of all connectors, ensuring safety of vault, and prevention of aluminum profile wastage.
- In most cases it is unnecessary to install purlins. Prevention of top vault arches movements is accomplished by installing a rod or cables between the rafters ridge.
- If it is decided to install purlins, it is possible to calculate loads by entering the data of a section of the vault, which caged between two neighboring purlins.
- Glazing with aluminum profiles.
- Refrain from inserting fasteners through the sheets.
- Limited minimum radius of bending according to product spec.
- An arch is always a section of a semi circle.
The arch is defined by these Parameters:
- Radius: The radius of the circle which the arch is part of.
- Length: The length of the sheet used for the arch.
- Span: The distance between the two arch bases.
- Height: The distance between the top of the arch to it's base.
- Alpha: The angle between the chord of the arch and it's tangent.
Simple Support - medium spans
Clamped - optimal support