Circles and Curved Trusses

CIRCLES AND CURVED TRUSSES
These curved trusses are made with full accuracy which guarantees a perfect fitting. All curved parts are made in special tools ensuring that all parts are identical. Every curved segment of a circle is fully exchangeable.
We offer a broad range of circles and curved trusses from FD25 till ST Series in various diameters and degrees. The number of curved parts is depending on the maximum length of each segment.
The maximum length per segment may not exceed 5,5m. Our advice is to purchase an even number of parts (2, 4 or 8 parts) in order to obtain full flexibility and exchangeability with standard lengths and corner elements.
Further it is advisable to check upon load bearing capacity as a circle or curved structure needs to be calculated differently.


TOOLS TO CALCULATE NUMBER OF PARTS AND LOADCASES

The number of parts of a circle depends on the diameter of the circle.
The number of parts of a circle depends on the diameter of the circle as well as the maximum length of the tube we can bend, which is 5,5 mtr.
You can easy calculate your needed units of segments with this scheme:
Number of segments X: = (DIAMETER x 3.14) / 5.5 METER
Example: FD34 Circle with a diameter of 8 meter
Number of Segments: (8 mtr x 3.14) / 5.5 = 4.57
Minimum number of segment is: 5

The load bearing capacity of a circle is only valid when the circle will be hung horizontally
Length X = (DIAMETER x 3.14) / NR. OF HANGING POINTS
Load Capacity per Hanging Point = DIVIDED LOAD IN KG OF LENGTH X / 5
Total Load Capacity = LOAD PER HANGING POINT * NUMBER OF HANGING POINTS
(Be aware that the loading per hanging point may not exceed the point load of the Length X.)
Example: FD34 Circle with a diameter of 8 meter hung on 4 points
Length X = (8 mtr x 3.14) / 4 (Hanging Points) = 6.28 meter
The UDL of FD34 on 6.28m (see load case) = 1410 kg / 5 (fixed parameter) = 282 kg per hanging point
Total Load Capacity of the Circle = 282 kg x 4 (number of hanging points) = 1128 kg (UDL)

CIRCLES AND CURVED TRUSSES ELEMENTS
Our advice is to purchase an even number of parts (2, 4 or 8 parts) in order to obtain full flexibility and exchangeability with standard lengths and corner elements.
See here some examples of various shapes which are possible.
As a quarter circle segment can be regarded as a big 90° Corner various structure opportunities appear.

