Design guidelines MD Designperforation
If you are considering using MD Designperforation for your project, here are some design guidelines that might help you with your plans.
Experience has taught us that in perforated facades a percentage of 25 to 40% usually results in the best effect. The facade appears more closed when smaller openings are used, and with larger openings the structure will become visible. It’s also important to take into account the colour and amount of light that falls in the background.
The calculation of the perforation degree is (at a triangle stitch with round holes):
R = hole diameter
T = stitch
Perforation degree = [R2 x 90,69] / [T2]
T design / photo perforation = [Rmax + c] Rmax = largest hole diameter
T = stitch
The number of holes per m2 is determined by the pitch. By increasing the pitch, the number of holes is reduced exponentially. The number of holes per m2 helps determine the cost of panel production.
You can deviate from this blind edge, but this creates a risk that the holes will be deformed into ovals instead of rounds. Material and material thicknesses also have a bearing on this. Also, the panel should be less perforated in the corner of the set. We would need to look at the possibilities specific to your project.
- Corten steel
Thicknesses range from 1.5 to 4 mm, partly depending on the type of MD Designperforation. The choice of material also determines the weight and strength of the panels, as well as the desired appearance.
- Thermal galvanizing (steel)
- Powder coating (steel, aluminum)
- Anodizing (aluminum)
The choice of surface treatment depends on the desired appearance (color, shine etc) and the material type (for example corrosion protection in steel). The method of detailing also affects the surface treatment you will need.
Given the many factors that play a part in determining tolerances, we recommend asking about tolerances specific to your project.