The only difference between the two bush-coupler portal frames Rapido RP 105 and BF 105 regards the steel working: while the RP 105 is hot dipped galvanized, the BF 105 is evenly painted by means of an anti-scratch manufacturing process (see photo 1). Also the RP 105 scaffolding system is delivered with 110/150/180/200/250 cm bay length.
The hot dip galvanized process makes the RP 105 ideal for use in the most aggressive and resistant to rust environments over the years.
CETA's construction excellence can be seen in the care taken over the gudgeon pin, which is 17 cm long: the angle of the weld spot and the flat surface without any throttling mean the standard sits perfectly straight, thus correctly distributing the weights and stresses (see photo 2).
As for BF 105, a particular attention is given to the coupling -bushings of the cross braces and diagonal braces. The cold-forged bushings are shaped to perfectly embrace the standards and have 8 cm of welding each. This guarantees the highest value of tearing resistance: more than 4.750 kg (see photo 3).
All these CETA's technical and construction choices mark the superior structural strength of the frame. The minimum collapse load, referring to a span, turns out to be 10.,050 kg, with 1.,80 m scaffolding bay length using structural steel planks and 9.700 kg with 2.50 m scaffolding bay length again with structural steel planks. These values mean that Rapido 105 and BF 105 scaffoldings can be erected to great heights without the need to double the standards.