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Design principle




As each rib is unique and custom-made, it can be designed for the structural capacity that is locally needed, even if varies along the rib. Deeper ribs lead to more stiffness in that direction, wider ribs in the direction perpendicularly to it. Spatially curving network structures - unlike frame structures - lead as by default to its members acting in torque, and the Deltaribs' closed cross section is particularly apt for that. In addition, the ribs also resist bending in all directions.

Strength and stiffness of the ribs are dependent on the size of the cross section and the plate thickness, and can be increased by incorporating a steel plate or circular bar or tube is included in the edge of a rib, where it is most effective.

On a more global level, the structural capacity of the network is affected by its density. For instance in heavily loaded zones nearby supports, rib spacing could be reduced, whereas made more spacious elsewhere.
Variation of the ribs' structural capacity through wider and/or deeper cross sections
Increased capacity by making the rib's cross section wider and/or deeper.

Three ways to increase structural capacity
Increased structural capacity by a higher grid density, by a greater beam size, and through thicker plates.

Deltaribs with internal 'flanges'
Increased capacity with an internal planar or tubular 'flange'.

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