8. Cascade drainage
In this case, the water is channelled through the crossbeam to the upright. However, every 20 m, water must be discharged from the upright to the outside.
In France, the DTU prohibits the communication of the 2 chambers (upper and lower glazing) in the crosspieces. In Germany and other countries, there is no such restriction.
Figure 12 shows an example of water being discharged from the uprights to the outside every 20 m.
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Cascade drainage
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Standards and norms
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Curtain wall design documents
- Curtain walls – Product standard. - NF EN 13830 -
- Terminologie. - NF EN 13119 -
- Curtain walls, semi-curtain walls, panel façades – CLA – CGM – CCS – 1- Technical specifications – 2- General material selection criteria – 3- Special clauses – 4- Maintenance appendix - DTU 33.1 P 28-002 indice 1 à 3 -
- Tolérances dimensionnelles...
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